[279] | 1 | /*
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| 2 | * ARMv4 code generator for TCC
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| 3 | *
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| 4 | * Copyright (c) 2003 Daniel Glöckner
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| 5 | * Copyright (c) 2012 Thomas Preud'homme
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| 6 | *
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| 7 | * Based on i386-gen.c by Fabrice Bellard
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| 8 | *
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| 9 | * This library is free software; you can redistribute it and/or
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| 10 | * modify it under the terms of the GNU Lesser General Public
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| 11 | * License as published by the Free Software Foundation; either
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| 12 | * version 2 of the License, or (at your option) any later version.
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| 13 | *
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| 14 | * This library is distributed in the hope that it will be useful,
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 17 | * Lesser General Public License for more details.
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| 18 | *
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| 19 | * You should have received a copy of the GNU Lesser General Public
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| 20 | * License along with this library; if not, write to the Free Software
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| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 22 | */
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| 23 |
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| 24 | #ifdef TARGET_DEFS_ONLY
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| 25 |
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| 26 | #ifdef TCC_ARM_EABI
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| 27 | #ifndef TCC_ARM_VFP // Avoid useless warning
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| 28 | #define TCC_ARM_VFP
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| 29 | #endif
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| 30 | #endif
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| 31 |
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| 32 | /* number of available registers */
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| 33 | #ifdef TCC_ARM_VFP
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| 34 | #define NB_REGS 13
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| 35 | #else
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| 36 | #define NB_REGS 9
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| 37 | #endif
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| 38 |
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| 39 | #ifndef TCC_ARM_VERSION
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| 40 | # define TCC_ARM_VERSION 5
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| 41 | #endif
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| 42 |
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| 43 | /* a register can belong to several classes. The classes must be
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| 44 | sorted from more general to more precise (see gv2() code which does
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| 45 | assumptions on it). */
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| 46 | #define RC_INT 0x0001 /* generic integer register */
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| 47 | #define RC_FLOAT 0x0002 /* generic float register */
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| 48 | #define RC_R0 0x0004
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| 49 | #define RC_R1 0x0008
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| 50 | #define RC_R2 0x0010
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| 51 | #define RC_R3 0x0020
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| 52 | #define RC_R12 0x0040
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| 53 | #define RC_F0 0x0080
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| 54 | #define RC_F1 0x0100
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| 55 | #define RC_F2 0x0200
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| 56 | #define RC_F3 0x0400
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| 57 | #ifdef TCC_ARM_VFP
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| 58 | #define RC_F4 0x0800
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| 59 | #define RC_F5 0x1000
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| 60 | #define RC_F6 0x2000
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| 61 | #define RC_F7 0x4000
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| 62 | #endif
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| 63 | #define RC_IRET RC_R0 /* function return: integer register */
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| 64 | #define RC_LRET RC_R1 /* function return: second integer register */
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| 65 | #define RC_FRET RC_F0 /* function return: float register */
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| 66 |
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| 67 | /* pretty names for the registers */
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| 68 | enum {
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| 69 | TREG_R0 = 0,
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| 70 | TREG_R1,
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| 71 | TREG_R2,
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| 72 | TREG_R3,
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| 73 | TREG_R12,
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| 74 | TREG_F0,
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| 75 | TREG_F1,
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| 76 | TREG_F2,
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| 77 | TREG_F3,
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| 78 | #ifdef TCC_ARM_VFP
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| 79 | TREG_F4,
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| 80 | TREG_F5,
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| 81 | TREG_F6,
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| 82 | TREG_F7,
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| 83 | #endif
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| 84 | };
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| 85 |
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| 86 | #ifdef TCC_ARM_VFP
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| 87 | #define T2CPR(t) (((t) & VT_BTYPE) != VT_FLOAT ? 0x100 : 0)
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| 88 | #endif
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| 89 |
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| 90 | /* return registers for function */
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| 91 | #define REG_IRET TREG_R0 /* single word int return register */
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| 92 | #define REG_LRET TREG_R1 /* second word return register (for long long) */
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| 93 | #define REG_FRET TREG_F0 /* float return register */
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| 94 |
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| 95 | #ifdef TCC_ARM_EABI
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| 96 | #define TOK___divdi3 TOK___aeabi_ldivmod
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| 97 | #define TOK___moddi3 TOK___aeabi_ldivmod
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| 98 | #define TOK___udivdi3 TOK___aeabi_uldivmod
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| 99 | #define TOK___umoddi3 TOK___aeabi_uldivmod
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| 100 | #endif
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| 101 |
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| 102 | /* defined if function parameters must be evaluated in reverse order */
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| 103 | #define INVERT_FUNC_PARAMS
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| 104 |
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| 105 | /* defined if structures are passed as pointers. Otherwise structures
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| 106 | are directly pushed on stack. */
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| 107 | //#define FUNC_STRUCT_PARAM_AS_PTR
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| 108 |
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| 109 | /* pointer size, in bytes */
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| 110 | #define PTR_SIZE 4
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| 111 |
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| 112 | /* long double size and alignment, in bytes */
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| 113 | #ifdef TCC_ARM_VFP
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| 114 | #define LDOUBLE_SIZE 8
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| 115 | #endif
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| 116 |
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| 117 | #ifndef LDOUBLE_SIZE
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| 118 | #define LDOUBLE_SIZE 8
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| 119 | #endif
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| 120 |
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| 121 | #ifdef TCC_ARM_EABI
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| 122 | #define LDOUBLE_ALIGN 8
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| 123 | #else
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| 124 | #define LDOUBLE_ALIGN 4
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| 125 | #endif
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| 126 |
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| 127 | /* maximum alignment (for aligned attribute support) */
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| 128 | #define MAX_ALIGN 8
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| 129 |
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| 130 | #define CHAR_IS_UNSIGNED
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| 131 |
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| 132 | /******************************************************/
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| 133 | /* ELF defines */
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| 134 |
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| 135 | #define EM_TCC_TARGET EM_ARM
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| 136 |
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| 137 | /* relocation type for 32 bit data relocation */
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| 138 | #define R_DATA_32 R_ARM_ABS32
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| 139 | #define R_DATA_PTR R_ARM_ABS32
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| 140 | #define R_JMP_SLOT R_ARM_JUMP_SLOT
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| 141 | #define R_COPY R_ARM_COPY
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| 142 |
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| 143 | #define ELF_START_ADDR 0x00008000
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| 144 | #define ELF_PAGE_SIZE 0x1000
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| 145 |
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| 146 | /******************************************************/
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| 147 | #else /* ! TARGET_DEFS_ONLY */
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| 148 | /******************************************************/
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| 149 | #include "tcc.h"
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| 150 |
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| 151 | ST_DATA const int reg_classes[NB_REGS] = {
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| 152 | /* r0 */ RC_INT | RC_R0,
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| 153 | /* r1 */ RC_INT | RC_R1,
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| 154 | /* r2 */ RC_INT | RC_R2,
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| 155 | /* r3 */ RC_INT | RC_R3,
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| 156 | /* r12 */ RC_INT | RC_R12,
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| 157 | /* f0 */ RC_FLOAT | RC_F0,
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| 158 | /* f1 */ RC_FLOAT | RC_F1,
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| 159 | /* f2 */ RC_FLOAT | RC_F2,
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| 160 | /* f3 */ RC_FLOAT | RC_F3,
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| 161 | #ifdef TCC_ARM_VFP
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| 162 | /* d4/s8 */ RC_FLOAT | RC_F4,
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| 163 | /* d5/s10 */ RC_FLOAT | RC_F5,
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| 164 | /* d6/s12 */ RC_FLOAT | RC_F6,
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| 165 | /* d7/s14 */ RC_FLOAT | RC_F7,
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| 166 | #endif
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| 167 | };
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| 168 |
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| 169 | static int func_sub_sp_offset, last_itod_magic;
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| 170 | static int leaffunc;
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| 171 |
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| 172 | #if defined(TCC_ARM_EABI) && defined(TCC_ARM_VFP)
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| 173 | static CType float_type, double_type, func_float_type, func_double_type;
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| 174 | ST_FUNC void arm_init_types(void)
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| 175 | {
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| 176 | float_type.t = VT_FLOAT;
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| 177 | double_type.t = VT_DOUBLE;
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| 178 | func_float_type.t = VT_FUNC;
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| 179 | func_float_type.ref = sym_push(SYM_FIELD, &float_type, FUNC_CDECL, FUNC_OLD);
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| 180 | func_double_type.t = VT_FUNC;
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| 181 | func_double_type.ref = sym_push(SYM_FIELD, &double_type, FUNC_CDECL, FUNC_OLD);
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| 182 | }
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| 183 | #else
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| 184 | #define func_float_type func_old_type
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| 185 | #define func_double_type func_old_type
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| 186 | #define func_ldouble_type func_old_type
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| 187 | ST_FUNC void arm_init_types(void) {}
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| 188 | #endif
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| 189 |
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| 190 | static int two2mask(int a,int b) {
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| 191 | return (reg_classes[a]|reg_classes[b])&~(RC_INT|RC_FLOAT);
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| 192 | }
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| 193 |
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| 194 | static int regmask(int r) {
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| 195 | return reg_classes[r]&~(RC_INT|RC_FLOAT);
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| 196 | }
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| 197 |
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| 198 | /******************************************************/
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| 199 |
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| 200 | void o(unsigned int i)
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| 201 | {
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| 202 | /* this is a good place to start adding big-endian support*/
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| 203 | int ind1;
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| 204 |
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| 205 | ind1 = ind + 4;
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| 206 | if (!cur_text_section)
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| 207 | tcc_error("compiler error! This happens f.ex. if the compiler\n"
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| 208 | "can't evaluate constant expressions outside of a function.");
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| 209 | if (ind1 > cur_text_section->data_allocated)
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| 210 | section_realloc(cur_text_section, ind1);
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| 211 | cur_text_section->data[ind++] = i&255;
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| 212 | i>>=8;
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| 213 | cur_text_section->data[ind++] = i&255;
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| 214 | i>>=8;
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| 215 | cur_text_section->data[ind++] = i&255;
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| 216 | i>>=8;
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| 217 | cur_text_section->data[ind++] = i;
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| 218 | }
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| 219 |
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| 220 | static uint32_t stuff_const(uint32_t op, uint32_t c)
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| 221 | {
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| 222 | int try_neg=0;
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| 223 | uint32_t nc = 0, negop = 0;
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| 224 |
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| 225 | switch(op&0x1F00000)
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| 226 | {
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| 227 | case 0x800000: //add
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| 228 | case 0x400000: //sub
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| 229 | try_neg=1;
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| 230 | negop=op^0xC00000;
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| 231 | nc=-c;
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| 232 | break;
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| 233 | case 0x1A00000: //mov
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| 234 | case 0x1E00000: //mvn
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| 235 | try_neg=1;
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| 236 | negop=op^0x400000;
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| 237 | nc=~c;
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| 238 | break;
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| 239 | case 0x200000: //xor
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| 240 | if(c==~0)
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| 241 | return (op&0xF010F000)|((op>>16)&0xF)|0x1E00000;
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| 242 | break;
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| 243 | case 0x0: //and
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| 244 | if(c==~0)
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| 245 | return (op&0xF010F000)|((op>>16)&0xF)|0x1A00000;
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| 246 | case 0x1C00000: //bic
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| 247 | try_neg=1;
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| 248 | negop=op^0x1C00000;
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| 249 | nc=~c;
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| 250 | break;
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| 251 | case 0x1800000: //orr
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| 252 | if(c==~0)
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| 253 | return (op&0xFFF0FFFF)|0x1E00000;
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| 254 | break;
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| 255 | }
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| 256 | do {
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| 257 | uint32_t m;
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| 258 | int i;
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| 259 | if(c<256) /* catch undefined <<32 */
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| 260 | return op|c;
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| 261 | for(i=2;i<32;i+=2) {
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| 262 | m=(0xff>>i)|(0xff<<(32-i));
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| 263 | if(!(c&~m))
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| 264 | return op|(i<<7)|(c<<i)|(c>>(32-i));
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| 265 | }
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| 266 | op=negop;
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| 267 | c=nc;
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| 268 | } while(try_neg--);
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| 269 | return 0;
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| 270 | }
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| 271 |
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| 272 |
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| 273 | //only add,sub
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| 274 | void stuff_const_harder(uint32_t op, uint32_t v) {
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| 275 | uint32_t x;
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| 276 | x=stuff_const(op,v);
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| 277 | if(x)
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| 278 | o(x);
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| 279 | else {
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| 280 | uint32_t a[16], nv, no, o2, n2;
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| 281 | int i,j,k;
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| 282 | a[0]=0xff;
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| 283 | o2=(op&0xfff0ffff)|((op&0xf000)<<4);;
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| 284 | for(i=1;i<16;i++)
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| 285 | a[i]=(a[i-1]>>2)|(a[i-1]<<30);
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| 286 | for(i=0;i<12;i++)
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| 287 | for(j=i<4?i+12:15;j>=i+4;j--)
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| 288 | if((v&(a[i]|a[j]))==v) {
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| 289 | o(stuff_const(op,v&a[i]));
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| 290 | o(stuff_const(o2,v&a[j]));
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| 291 | return;
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| 292 | }
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| 293 | no=op^0xC00000;
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| 294 | n2=o2^0xC00000;
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| 295 | nv=-v;
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| 296 | for(i=0;i<12;i++)
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| 297 | for(j=i<4?i+12:15;j>=i+4;j--)
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| 298 | if((nv&(a[i]|a[j]))==nv) {
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| 299 | o(stuff_const(no,nv&a[i]));
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| 300 | o(stuff_const(n2,nv&a[j]));
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| 301 | return;
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| 302 | }
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| 303 | for(i=0;i<8;i++)
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| 304 | for(j=i+4;j<12;j++)
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| 305 | for(k=i<4?i+12:15;k>=j+4;k--)
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| 306 | if((v&(a[i]|a[j]|a[k]))==v) {
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| 307 | o(stuff_const(op,v&a[i]));
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| 308 | o(stuff_const(o2,v&a[j]));
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| 309 | o(stuff_const(o2,v&a[k]));
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| 310 | return;
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| 311 | }
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| 312 | no=op^0xC00000;
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| 313 | nv=-v;
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| 314 | for(i=0;i<8;i++)
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| 315 | for(j=i+4;j<12;j++)
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| 316 | for(k=i<4?i+12:15;k>=j+4;k--)
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| 317 | if((nv&(a[i]|a[j]|a[k]))==nv) {
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| 318 | o(stuff_const(no,nv&a[i]));
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| 319 | o(stuff_const(n2,nv&a[j]));
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| 320 | o(stuff_const(n2,nv&a[k]));
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| 321 | return;
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| 322 | }
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| 323 | o(stuff_const(op,v&a[0]));
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| 324 | o(stuff_const(o2,v&a[4]));
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| 325 | o(stuff_const(o2,v&a[8]));
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| 326 | o(stuff_const(o2,v&a[12]));
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| 327 | }
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| 328 | }
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| 329 |
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| 330 | ST_FUNC uint32_t encbranch(int pos, int addr, int fail)
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| 331 | {
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| 332 | addr-=pos+8;
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| 333 | addr/=4;
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| 334 | if(addr>=0x1000000 || addr<-0x1000000) {
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| 335 | if(fail)
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| 336 | tcc_error("FIXME: function bigger than 32MB");
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| 337 | return 0;
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| 338 | }
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| 339 | return 0x0A000000|(addr&0xffffff);
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| 340 | }
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| 341 |
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| 342 | int decbranch(int pos)
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| 343 | {
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| 344 | int x;
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| 345 | x=*(uint32_t *)(cur_text_section->data + pos);
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| 346 | x&=0x00ffffff;
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| 347 | if(x&0x800000)
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| 348 | x-=0x1000000;
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| 349 | return x*4+pos+8;
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| 350 | }
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| 351 |
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| 352 | /* output a symbol and patch all calls to it */
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| 353 | void gsym_addr(int t, int a)
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| 354 | {
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| 355 | uint32_t *x;
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| 356 | int lt;
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| 357 | while(t) {
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| 358 | x=(uint32_t *)(cur_text_section->data + t);
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| 359 | t=decbranch(lt=t);
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| 360 | if(a==lt+4)
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| 361 | *x=0xE1A00000; // nop
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| 362 | else {
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| 363 | *x &= 0xff000000;
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| 364 | *x |= encbranch(lt,a,1);
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| 365 | }
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| 366 | }
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| 367 | }
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| 368 |
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| 369 | void gsym(int t)
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| 370 | {
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| 371 | gsym_addr(t, ind);
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| 372 | }
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| 373 |
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| 374 | #ifdef TCC_ARM_VFP
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| 375 | static uint32_t vfpr(int r)
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| 376 | {
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| 377 | if(r<TREG_F0 || r>TREG_F7)
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| 378 | tcc_error("compiler error! register %i is no vfp register",r);
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| 379 | return r-5;
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| 380 | }
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| 381 | #else
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| 382 | static uint32_t fpr(int r)
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| 383 | {
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| 384 | if(r<TREG_F0 || r>TREG_F3)
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| 385 | tcc_error("compiler error! register %i is no fpa register",r);
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| 386 | return r-5;
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| 387 | }
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| 388 | #endif
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| 389 |
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| 390 | static uint32_t intr(int r)
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| 391 | {
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| 392 | if(r==4)
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| 393 | return 12;
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| 394 | if((r<0 || r>4) && r!=14)
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| 395 | tcc_error("compiler error! register %i is no int register",r);
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| 396 | return r;
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| 397 | }
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| 398 |
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| 399 | static void calcaddr(uint32_t *base, int *off, int *sgn, int maxoff, unsigned shift)
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| 400 | {
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| 401 | if(*off>maxoff || *off&((1<<shift)-1)) {
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| 402 | uint32_t x, y;
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| 403 | x=0xE280E000;
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| 404 | if(*sgn)
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| 405 | x=0xE240E000;
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| 406 | x|=(*base)<<16;
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| 407 | *base=14; // lr
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| 408 | y=stuff_const(x,*off&~maxoff);
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| 409 | if(y) {
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| 410 | o(y);
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| 411 | *off&=maxoff;
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| 412 | return;
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| 413 | }
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| 414 | y=stuff_const(x,(*off+maxoff)&~maxoff);
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| 415 | if(y) {
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| 416 | o(y);
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| 417 | *sgn=!*sgn;
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| 418 | *off=((*off+maxoff)&~maxoff)-*off;
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| 419 | return;
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| 420 | }
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| 421 | stuff_const_harder(x,*off&~maxoff);
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| 422 | *off&=maxoff;
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| 423 | }
|
---|
| 424 | }
|
---|
| 425 |
|
---|
| 426 | static uint32_t mapcc(int cc)
|
---|
| 427 | {
|
---|
| 428 | switch(cc)
|
---|
| 429 | {
|
---|
| 430 | case TOK_ULT:
|
---|
| 431 | return 0x30000000; /* CC/LO */
|
---|
| 432 | case TOK_UGE:
|
---|
| 433 | return 0x20000000; /* CS/HS */
|
---|
| 434 | case TOK_EQ:
|
---|
| 435 | return 0x00000000; /* EQ */
|
---|
| 436 | case TOK_NE:
|
---|
| 437 | return 0x10000000; /* NE */
|
---|
| 438 | case TOK_ULE:
|
---|
| 439 | return 0x90000000; /* LS */
|
---|
| 440 | case TOK_UGT:
|
---|
| 441 | return 0x80000000; /* HI */
|
---|
| 442 | case TOK_Nset:
|
---|
| 443 | return 0x40000000; /* MI */
|
---|
| 444 | case TOK_Nclear:
|
---|
| 445 | return 0x50000000; /* PL */
|
---|
| 446 | case TOK_LT:
|
---|
| 447 | return 0xB0000000; /* LT */
|
---|
| 448 | case TOK_GE:
|
---|
| 449 | return 0xA0000000; /* GE */
|
---|
| 450 | case TOK_LE:
|
---|
| 451 | return 0xD0000000; /* LE */
|
---|
| 452 | case TOK_GT:
|
---|
| 453 | return 0xC0000000; /* GT */
|
---|
| 454 | }
|
---|
| 455 | tcc_error("unexpected condition code");
|
---|
| 456 | return 0xE0000000; /* AL */
|
---|
| 457 | }
|
---|
| 458 |
|
---|
| 459 | static int negcc(int cc)
|
---|
| 460 | {
|
---|
| 461 | switch(cc)
|
---|
| 462 | {
|
---|
| 463 | case TOK_ULT:
|
---|
| 464 | return TOK_UGE;
|
---|
| 465 | case TOK_UGE:
|
---|
| 466 | return TOK_ULT;
|
---|
| 467 | case TOK_EQ:
|
---|
| 468 | return TOK_NE;
|
---|
| 469 | case TOK_NE:
|
---|
| 470 | return TOK_EQ;
|
---|
| 471 | case TOK_ULE:
|
---|
| 472 | return TOK_UGT;
|
---|
| 473 | case TOK_UGT:
|
---|
| 474 | return TOK_ULE;
|
---|
| 475 | case TOK_Nset:
|
---|
| 476 | return TOK_Nclear;
|
---|
| 477 | case TOK_Nclear:
|
---|
| 478 | return TOK_Nset;
|
---|
| 479 | case TOK_LT:
|
---|
| 480 | return TOK_GE;
|
---|
| 481 | case TOK_GE:
|
---|
| 482 | return TOK_LT;
|
---|
| 483 | case TOK_LE:
|
---|
| 484 | return TOK_GT;
|
---|
| 485 | case TOK_GT:
|
---|
| 486 | return TOK_LE;
|
---|
| 487 | }
|
---|
| 488 | tcc_error("unexpected condition code");
|
---|
| 489 | return TOK_NE;
|
---|
| 490 | }
|
---|
| 491 |
|
---|
| 492 | /* load 'r' from value 'sv' */
|
---|
| 493 | void load(int r, SValue *sv)
|
---|
| 494 | {
|
---|
| 495 | int v, ft, fc, fr, sign;
|
---|
| 496 | uint32_t op;
|
---|
| 497 | SValue v1;
|
---|
| 498 |
|
---|
| 499 | fr = sv->r;
|
---|
| 500 | ft = sv->type.t;
|
---|
| 501 | fc = sv->c.ul;
|
---|
| 502 |
|
---|
| 503 | if(fc>=0)
|
---|
| 504 | sign=0;
|
---|
| 505 | else {
|
---|
| 506 | sign=1;
|
---|
| 507 | fc=-fc;
|
---|
| 508 | }
|
---|
| 509 |
|
---|
| 510 | v = fr & VT_VALMASK;
|
---|
| 511 | if (fr & VT_LVAL) {
|
---|
| 512 | uint32_t base = 0xB; // fp
|
---|
| 513 | if(v == VT_LLOCAL) {
|
---|
| 514 | v1.type.t = VT_PTR;
|
---|
| 515 | v1.r = VT_LOCAL | VT_LVAL;
|
---|
| 516 | v1.c.ul = sv->c.ul;
|
---|
| 517 | load(base=14 /* lr */, &v1);
|
---|
| 518 | fc=sign=0;
|
---|
| 519 | v=VT_LOCAL;
|
---|
| 520 | } else if(v == VT_CONST) {
|
---|
| 521 | v1.type.t = VT_PTR;
|
---|
| 522 | v1.r = fr&~VT_LVAL;
|
---|
| 523 | v1.c.ul = sv->c.ul;
|
---|
| 524 | v1.sym=sv->sym;
|
---|
| 525 | load(base=14, &v1);
|
---|
| 526 | fc=sign=0;
|
---|
| 527 | v=VT_LOCAL;
|
---|
| 528 | } else if(v < VT_CONST) {
|
---|
| 529 | base=intr(v);
|
---|
| 530 | fc=sign=0;
|
---|
| 531 | v=VT_LOCAL;
|
---|
| 532 | }
|
---|
| 533 | if(v == VT_LOCAL) {
|
---|
| 534 | if(is_float(ft)) {
|
---|
| 535 | calcaddr(&base,&fc,&sign,1020,2);
|
---|
| 536 | #ifdef TCC_ARM_VFP
|
---|
| 537 | op=0xED100A00; /* flds */
|
---|
| 538 | if(!sign)
|
---|
| 539 | op|=0x800000;
|
---|
| 540 | if ((ft & VT_BTYPE) != VT_FLOAT)
|
---|
| 541 | op|=0x100; /* flds -> fldd */
|
---|
| 542 | o(op|(vfpr(r)<<12)|(fc>>2)|(base<<16));
|
---|
| 543 | #else
|
---|
| 544 | op=0xED100100;
|
---|
| 545 | if(!sign)
|
---|
| 546 | op|=0x800000;
|
---|
| 547 | #if LDOUBLE_SIZE == 8
|
---|
| 548 | if ((ft & VT_BTYPE) != VT_FLOAT)
|
---|
| 549 | op|=0x8000;
|
---|
| 550 | #else
|
---|
| 551 | if ((ft & VT_BTYPE) == VT_DOUBLE)
|
---|
| 552 | op|=0x8000;
|
---|
| 553 | else if ((ft & VT_BTYPE) == VT_LDOUBLE)
|
---|
| 554 | op|=0x400000;
|
---|
| 555 | #endif
|
---|
| 556 | o(op|(fpr(r)<<12)|(fc>>2)|(base<<16));
|
---|
| 557 | #endif
|
---|
| 558 | } else if((ft & (VT_BTYPE|VT_UNSIGNED)) == VT_BYTE
|
---|
| 559 | || (ft & VT_BTYPE) == VT_SHORT) {
|
---|
| 560 | calcaddr(&base,&fc,&sign,255,0);
|
---|
| 561 | op=0xE1500090;
|
---|
| 562 | if ((ft & VT_BTYPE) == VT_SHORT)
|
---|
| 563 | op|=0x20;
|
---|
| 564 | if ((ft & VT_UNSIGNED) == 0)
|
---|
| 565 | op|=0x40;
|
---|
| 566 | if(!sign)
|
---|
| 567 | op|=0x800000;
|
---|
| 568 | o(op|(intr(r)<<12)|(base<<16)|((fc&0xf0)<<4)|(fc&0xf));
|
---|
| 569 | } else {
|
---|
| 570 | calcaddr(&base,&fc,&sign,4095,0);
|
---|
| 571 | op=0xE5100000;
|
---|
| 572 | if(!sign)
|
---|
| 573 | op|=0x800000;
|
---|
| 574 | if ((ft & VT_BTYPE) == VT_BYTE)
|
---|
| 575 | op|=0x400000;
|
---|
| 576 | o(op|(intr(r)<<12)|fc|(base<<16));
|
---|
| 577 | }
|
---|
| 578 | return;
|
---|
| 579 | }
|
---|
| 580 | } else {
|
---|
| 581 | if (v == VT_CONST) {
|
---|
| 582 | op=stuff_const(0xE3A00000|(intr(r)<<12),sv->c.ul);
|
---|
| 583 | if (fr & VT_SYM || !op) {
|
---|
| 584 | o(0xE59F0000|(intr(r)<<12));
|
---|
| 585 | o(0xEA000000);
|
---|
| 586 | if(fr & VT_SYM)
|
---|
| 587 | greloc(cur_text_section, sv->sym, ind, R_ARM_ABS32);
|
---|
| 588 | o(sv->c.ul);
|
---|
| 589 | } else
|
---|
| 590 | o(op);
|
---|
| 591 | return;
|
---|
| 592 | } else if (v == VT_LOCAL) {
|
---|
| 593 | op=stuff_const(0xE28B0000|(intr(r)<<12),sv->c.ul);
|
---|
| 594 | if (fr & VT_SYM || !op) {
|
---|
| 595 | o(0xE59F0000|(intr(r)<<12));
|
---|
| 596 | o(0xEA000000);
|
---|
| 597 | if(fr & VT_SYM) // needed ?
|
---|
| 598 | greloc(cur_text_section, sv->sym, ind, R_ARM_ABS32);
|
---|
| 599 | o(sv->c.ul);
|
---|
| 600 | o(0xE08B0000|(intr(r)<<12)|intr(r));
|
---|
| 601 | } else
|
---|
| 602 | o(op);
|
---|
| 603 | return;
|
---|
| 604 | } else if(v == VT_CMP) {
|
---|
| 605 | o(mapcc(sv->c.ul)|0x3A00001|(intr(r)<<12));
|
---|
| 606 | o(mapcc(negcc(sv->c.ul))|0x3A00000|(intr(r)<<12));
|
---|
| 607 | return;
|
---|
| 608 | } else if (v == VT_JMP || v == VT_JMPI) {
|
---|
| 609 | int t;
|
---|
| 610 | t = v & 1;
|
---|
| 611 | o(0xE3A00000|(intr(r)<<12)|t);
|
---|
| 612 | o(0xEA000000);
|
---|
| 613 | gsym(sv->c.ul);
|
---|
| 614 | o(0xE3A00000|(intr(r)<<12)|(t^1));
|
---|
| 615 | return;
|
---|
| 616 | } else if (v < VT_CONST) {
|
---|
| 617 | if(is_float(ft))
|
---|
| 618 | #ifdef TCC_ARM_VFP
|
---|
| 619 | o(0xEEB00A40|(vfpr(r)<<12)|vfpr(v)|T2CPR(ft)); /* fcpyX */
|
---|
| 620 | #else
|
---|
| 621 | o(0xEE008180|(fpr(r)<<12)|fpr(v));
|
---|
| 622 | #endif
|
---|
| 623 | else
|
---|
| 624 | o(0xE1A00000|(intr(r)<<12)|intr(v));
|
---|
| 625 | return;
|
---|
| 626 | }
|
---|
| 627 | }
|
---|
| 628 | tcc_error("load unimplemented!");
|
---|
| 629 | }
|
---|
| 630 |
|
---|
| 631 | /* store register 'r' in lvalue 'v' */
|
---|
| 632 | void store(int r, SValue *sv)
|
---|
| 633 | {
|
---|
| 634 | SValue v1;
|
---|
| 635 | int v, ft, fc, fr, sign;
|
---|
| 636 | uint32_t op;
|
---|
| 637 |
|
---|
| 638 | fr = sv->r;
|
---|
| 639 | ft = sv->type.t;
|
---|
| 640 | fc = sv->c.ul;
|
---|
| 641 |
|
---|
| 642 | if(fc>=0)
|
---|
| 643 | sign=0;
|
---|
| 644 | else {
|
---|
| 645 | sign=1;
|
---|
| 646 | fc=-fc;
|
---|
| 647 | }
|
---|
| 648 |
|
---|
| 649 | v = fr & VT_VALMASK;
|
---|
| 650 | if (fr & VT_LVAL || fr == VT_LOCAL) {
|
---|
| 651 | uint32_t base = 0xb;
|
---|
| 652 | if(v < VT_CONST) {
|
---|
| 653 | base=intr(v);
|
---|
| 654 | v=VT_LOCAL;
|
---|
| 655 | fc=sign=0;
|
---|
| 656 | } else if(v == VT_CONST) {
|
---|
| 657 | v1.type.t = ft;
|
---|
| 658 | v1.r = fr&~VT_LVAL;
|
---|
| 659 | v1.c.ul = sv->c.ul;
|
---|
| 660 | v1.sym=sv->sym;
|
---|
| 661 | load(base=14, &v1);
|
---|
| 662 | fc=sign=0;
|
---|
| 663 | v=VT_LOCAL;
|
---|
| 664 | }
|
---|
| 665 | if(v == VT_LOCAL) {
|
---|
| 666 | if(is_float(ft)) {
|
---|
| 667 | calcaddr(&base,&fc,&sign,1020,2);
|
---|
| 668 | #ifdef TCC_ARM_VFP
|
---|
| 669 | op=0xED000A00; /* fsts */
|
---|
| 670 | if(!sign)
|
---|
| 671 | op|=0x800000;
|
---|
| 672 | if ((ft & VT_BTYPE) != VT_FLOAT)
|
---|
| 673 | op|=0x100; /* fsts -> fstd */
|
---|
| 674 | o(op|(vfpr(r)<<12)|(fc>>2)|(base<<16));
|
---|
| 675 | #else
|
---|
| 676 | op=0xED000100;
|
---|
| 677 | if(!sign)
|
---|
| 678 | op|=0x800000;
|
---|
| 679 | #if LDOUBLE_SIZE == 8
|
---|
| 680 | if ((ft & VT_BTYPE) != VT_FLOAT)
|
---|
| 681 | op|=0x8000;
|
---|
| 682 | #else
|
---|
| 683 | if ((ft & VT_BTYPE) == VT_DOUBLE)
|
---|
| 684 | op|=0x8000;
|
---|
| 685 | if ((ft & VT_BTYPE) == VT_LDOUBLE)
|
---|
| 686 | op|=0x400000;
|
---|
| 687 | #endif
|
---|
| 688 | o(op|(fpr(r)<<12)|(fc>>2)|(base<<16));
|
---|
| 689 | #endif
|
---|
| 690 | return;
|
---|
| 691 | } else if((ft & VT_BTYPE) == VT_SHORT) {
|
---|
| 692 | calcaddr(&base,&fc,&sign,255,0);
|
---|
| 693 | op=0xE14000B0;
|
---|
| 694 | if(!sign)
|
---|
| 695 | op|=0x800000;
|
---|
| 696 | o(op|(intr(r)<<12)|(base<<16)|((fc&0xf0)<<4)|(fc&0xf));
|
---|
| 697 | } else {
|
---|
| 698 | calcaddr(&base,&fc,&sign,4095,0);
|
---|
| 699 | op=0xE5000000;
|
---|
| 700 | if(!sign)
|
---|
| 701 | op|=0x800000;
|
---|
| 702 | if ((ft & VT_BTYPE) == VT_BYTE)
|
---|
| 703 | op|=0x400000;
|
---|
| 704 | o(op|(intr(r)<<12)|fc|(base<<16));
|
---|
| 705 | }
|
---|
| 706 | return;
|
---|
| 707 | }
|
---|
| 708 | }
|
---|
| 709 | tcc_error("store unimplemented");
|
---|
| 710 | }
|
---|
| 711 |
|
---|
| 712 | static void gadd_sp(int val)
|
---|
| 713 | {
|
---|
| 714 | stuff_const_harder(0xE28DD000,val);
|
---|
| 715 | }
|
---|
| 716 |
|
---|
| 717 | /* 'is_jmp' is '1' if it is a jump */
|
---|
| 718 | static void gcall_or_jmp(int is_jmp)
|
---|
| 719 | {
|
---|
| 720 | int r;
|
---|
| 721 | if ((vtop->r & (VT_VALMASK | VT_LVAL)) == VT_CONST) {
|
---|
| 722 | uint32_t x;
|
---|
| 723 | /* constant case */
|
---|
| 724 | x=encbranch(ind,ind+vtop->c.ul,0);
|
---|
| 725 | if(x) {
|
---|
| 726 | if (vtop->r & VT_SYM) {
|
---|
| 727 | /* relocation case */
|
---|
| 728 | greloc(cur_text_section, vtop->sym, ind, R_ARM_PC24);
|
---|
| 729 | } else
|
---|
| 730 | put_elf_reloc(symtab_section, cur_text_section, ind, R_ARM_PC24, 0);
|
---|
| 731 | o(x|(is_jmp?0xE0000000:0xE1000000));
|
---|
| 732 | } else {
|
---|
| 733 | if(!is_jmp)
|
---|
| 734 | o(0xE28FE004); // add lr,pc,#4
|
---|
| 735 | o(0xE51FF004); // ldr pc,[pc,#-4]
|
---|
| 736 | if (vtop->r & VT_SYM)
|
---|
| 737 | greloc(cur_text_section, vtop->sym, ind, R_ARM_ABS32);
|
---|
| 738 | o(vtop->c.ul);
|
---|
| 739 | }
|
---|
| 740 | } else {
|
---|
| 741 | /* otherwise, indirect call */
|
---|
| 742 | r = gv(RC_INT);
|
---|
| 743 | if(!is_jmp)
|
---|
| 744 | o(0xE1A0E00F); // mov lr,pc
|
---|
| 745 | o(0xE1A0F000|intr(r)); // mov pc,r
|
---|
| 746 | }
|
---|
| 747 | }
|
---|
| 748 |
|
---|
| 749 | #ifdef TCC_ARM_HARDFLOAT
|
---|
| 750 | static int is_float_hgen_aggr(CType *type)
|
---|
| 751 | {
|
---|
| 752 | if ((type->t & VT_BTYPE) == VT_STRUCT) {
|
---|
| 753 | struct Sym *ref;
|
---|
| 754 | int btype, nb_fields = 0;
|
---|
| 755 |
|
---|
| 756 | ref = type->ref;
|
---|
| 757 | btype = ref->type.t & VT_BTYPE;
|
---|
| 758 | if (btype == VT_FLOAT || btype == VT_DOUBLE) {
|
---|
| 759 | for(; ref && btype == (ref->type.t & VT_BTYPE); ref = ref->next, nb_fields++);
|
---|
| 760 | return !ref && nb_fields <= 4;
|
---|
| 761 | }
|
---|
| 762 | }
|
---|
| 763 | return 0;
|
---|
| 764 | }
|
---|
| 765 |
|
---|
| 766 | struct avail_regs {
|
---|
| 767 | /* worst case: f(float, double, 3 float struct, double, 3 float struct, double) */
|
---|
| 768 | signed char avail[3];
|
---|
| 769 | int first_hole;
|
---|
| 770 | int last_hole;
|
---|
| 771 | int first_free_reg;
|
---|
| 772 | };
|
---|
| 773 |
|
---|
| 774 | #define AVAIL_REGS_INITIALIZER (struct avail_regs) { { 0, 0, 0}, 0, 0, 0 }
|
---|
| 775 |
|
---|
| 776 | /* Assign a register for a CPRC param with correct size and alignment
|
---|
| 777 | * size and align are in bytes, as returned by type_size */
|
---|
| 778 | int assign_fpreg(struct avail_regs *avregs, int align, int size)
|
---|
| 779 | {
|
---|
| 780 | int first_reg = 0;
|
---|
| 781 |
|
---|
| 782 | if (avregs->first_free_reg == -1)
|
---|
| 783 | return -1;
|
---|
| 784 | if (align >> 3) { // alignment needed (base type: double)
|
---|
| 785 | first_reg = avregs->first_free_reg;
|
---|
| 786 | if (first_reg & 1)
|
---|
| 787 | avregs->avail[avregs->last_hole++] = first_reg++;
|
---|
| 788 | } else {
|
---|
| 789 | if (size == 4 && avregs->first_hole != avregs->last_hole)
|
---|
| 790 | return avregs->avail[avregs->first_hole++];
|
---|
| 791 | else
|
---|
| 792 | first_reg = avregs->first_free_reg;
|
---|
| 793 | }
|
---|
| 794 | if (first_reg + size / 4 <= 16) {
|
---|
| 795 | avregs->first_free_reg = first_reg + size / 4;
|
---|
| 796 | return first_reg;
|
---|
| 797 | }
|
---|
| 798 | avregs->first_free_reg = -1;
|
---|
| 799 | return -1;
|
---|
| 800 | }
|
---|
| 801 | #endif
|
---|
| 802 |
|
---|
| 803 | /* Generate function call. The function address is pushed first, then
|
---|
| 804 | all the parameters in call order. This functions pops all the
|
---|
| 805 | parameters and the function address. */
|
---|
| 806 | void gfunc_call(int nb_args)
|
---|
| 807 | {
|
---|
| 808 | int size, align, r, args_size, i, ncrn, ncprn, argno, vfp_argno;
|
---|
| 809 | signed char plan[4][2]={{-1,-1},{-1,-1},{-1,-1},{-1,-1}};
|
---|
| 810 | SValue *before_stack = NULL; /* SValue before first on stack argument */
|
---|
| 811 | SValue *before_vfpreg_hfa = NULL; /* SValue before first in VFP reg hfa argument */
|
---|
| 812 | #ifdef TCC_ARM_HARDFLOAT
|
---|
| 813 | struct avail_regs avregs = AVAIL_REGS_INITIALIZER;
|
---|
| 814 | signed char vfp_plan[16];
|
---|
| 815 | int plan2[4+16];
|
---|
| 816 | int variadic;
|
---|
| 817 | #else
|
---|
| 818 | int plan2[4]={0,0,0,0};
|
---|
| 819 | #endif
|
---|
| 820 | int vfp_todo=0;
|
---|
| 821 | int todo=0, keep;
|
---|
| 822 |
|
---|
| 823 | #ifdef TCC_ARM_HARDFLOAT
|
---|
| 824 | memset(vfp_plan, -1, sizeof(vfp_plan));
|
---|
| 825 | memset(plan2, 0, sizeof(plan2));
|
---|
| 826 | variadic = (vtop[-nb_args].type.ref->c == FUNC_ELLIPSIS);
|
---|
| 827 | #endif
|
---|
| 828 | r = vtop->r & VT_VALMASK;
|
---|
| 829 | if (r == VT_CMP || (r & ~1) == VT_JMP)
|
---|
| 830 | gv(RC_INT);
|
---|
| 831 | #ifdef TCC_ARM_EABI
|
---|
| 832 | if((vtop[-nb_args].type.ref->type.t & VT_BTYPE) == VT_STRUCT
|
---|
| 833 | && type_size(&vtop[-nb_args].type.ref->type, &align) <= 4) {
|
---|
| 834 | SValue tmp;
|
---|
| 835 | tmp=vtop[-nb_args];
|
---|
| 836 | vtop[-nb_args]=vtop[-nb_args+1];
|
---|
| 837 | vtop[-nb_args+1]=tmp;
|
---|
| 838 | --nb_args;
|
---|
| 839 | }
|
---|
| 840 |
|
---|
| 841 | vpushi(0), nb_args++;
|
---|
| 842 | vtop->type.t = VT_LLONG;
|
---|
| 843 | #endif
|
---|
| 844 | ncrn = ncprn = argno = vfp_argno = args_size = 0;
|
---|
| 845 | /* Assign argument to registers and stack with alignment.
|
---|
| 846 | If, considering alignment constraints, enough registers of the correct type
|
---|
| 847 | (core or VFP) are free for the current argument, assign them to it, else
|
---|
| 848 | allocate on stack with correct alignment. Whenever a structure is allocated
|
---|
| 849 | in registers or on stack, it is always put on the stack at this stage. The
|
---|
| 850 | stack is divided in 3 zones. The zone are, from low addresses to high
|
---|
| 851 | addresses: structures to be loaded in core registers, structures to be
|
---|
| 852 | loaded in VFP registers, argument allocated to stack. SValue's representing
|
---|
| 853 | structures in the first zone are moved just after the SValue pointed by
|
---|
| 854 | before_vfpreg_hfa. SValue's representing structures in the second zone are
|
---|
| 855 | moved just after the SValue pointer by before_stack. */
|
---|
| 856 | for(i = nb_args; i-- ;) {
|
---|
| 857 | int j, assigned_vfpreg = 0;
|
---|
| 858 | size = type_size(&vtop[-i].type, &align);
|
---|
| 859 | switch(vtop[-i].type.t & VT_BTYPE) {
|
---|
| 860 | case VT_STRUCT:
|
---|
| 861 | case VT_FLOAT:
|
---|
| 862 | case VT_DOUBLE:
|
---|
| 863 | case VT_LDOUBLE:
|
---|
| 864 | #ifdef TCC_ARM_HARDFLOAT
|
---|
| 865 | if (!variadic) {
|
---|
| 866 | int hfa = 0; /* Homogeneous float aggregate */
|
---|
| 867 |
|
---|
| 868 | if (is_float(vtop[-i].type.t)
|
---|
| 869 | || (hfa = is_float_hgen_aggr(&vtop[-i].type))) {
|
---|
| 870 | int end_reg;
|
---|
| 871 |
|
---|
| 872 | assigned_vfpreg = assign_fpreg(&avregs, align, size);
|
---|
| 873 | end_reg = assigned_vfpreg + (size - 1) / 4;
|
---|
| 874 | if (assigned_vfpreg >= 0) {
|
---|
| 875 | vfp_plan[vfp_argno++]=TREG_F0 + assigned_vfpreg/2;
|
---|
| 876 | if (hfa) {
|
---|
| 877 | /* before_stack can only have been set because all core registers
|
---|
| 878 | are assigned, so no need to care about before_vfpreg_hfa if
|
---|
| 879 | before_stack is set */
|
---|
| 880 | if (before_stack) {
|
---|
| 881 | vrote(&vtop[-i], &vtop[-i] - before_stack);
|
---|
| 882 | before_stack++;
|
---|
| 883 | } else if (!before_vfpreg_hfa)
|
---|
| 884 | before_vfpreg_hfa = &vtop[-i-1];
|
---|
| 885 | for (j = assigned_vfpreg; j <= end_reg; j++)
|
---|
| 886 | vfp_todo|=(1<<j);
|
---|
| 887 | }
|
---|
| 888 | continue;
|
---|
| 889 | } else {
|
---|
| 890 | if (!hfa)
|
---|
| 891 | vfp_argno++;
|
---|
| 892 | /* No need to update before_stack as no more hfa can be allocated in
|
---|
| 893 | VFP regs */
|
---|
| 894 | if (!before_vfpreg_hfa)
|
---|
| 895 | before_vfpreg_hfa = &vtop[-i-1];
|
---|
| 896 | break;
|
---|
| 897 | }
|
---|
| 898 | }
|
---|
| 899 | }
|
---|
| 900 | #endif
|
---|
| 901 | ncrn = (ncrn + (align-1)/4) & -(align/4);
|
---|
| 902 | size = (size + 3) & -4;
|
---|
| 903 | if (ncrn + size/4 <= 4 || (ncrn < 4 && assigned_vfpreg != -1)) {
|
---|
| 904 | /* Either there is HFA in VFP registers, or there is arguments on stack,
|
---|
| 905 | it cannot be both. Hence either before_stack already points after
|
---|
| 906 | the slot where the vtop[-i] SValue is moved, or before_stack will not
|
---|
| 907 | be used */
|
---|
| 908 | if (before_vfpreg_hfa) {
|
---|
| 909 | vrote(&vtop[-i], &vtop[-i] - before_vfpreg_hfa);
|
---|
| 910 | before_vfpreg_hfa++;
|
---|
| 911 | }
|
---|
| 912 | for (j = ncrn; j < 4 && j < ncrn + size / 4; j++)
|
---|
| 913 | todo|=(1<<j);
|
---|
| 914 | ncrn+=size/4;
|
---|
| 915 | if (ncrn > 4) {
|
---|
| 916 | args_size = (ncrn - 4) * 4;
|
---|
| 917 | if (!before_stack)
|
---|
| 918 | before_stack = &vtop[-i-1];
|
---|
| 919 | }
|
---|
| 920 | }
|
---|
| 921 | else {
|
---|
| 922 | ncrn = 4;
|
---|
| 923 | /* No need to set before_vfpreg_hfa if not set since there will no
|
---|
| 924 | longer be any structure assigned to core registers */
|
---|
| 925 | if (!before_stack)
|
---|
| 926 | before_stack = &vtop[-i-1];
|
---|
| 927 | break;
|
---|
| 928 | }
|
---|
| 929 | continue;
|
---|
| 930 | default:
|
---|
| 931 | #ifdef TCC_ARM_EABI
|
---|
| 932 | if (!i) {
|
---|
| 933 | break;
|
---|
| 934 | }
|
---|
| 935 | #endif
|
---|
| 936 | if (ncrn < 4) {
|
---|
| 937 | int is_long = (vtop[-i].type.t & VT_BTYPE) == VT_LLONG;
|
---|
| 938 |
|
---|
| 939 | if (is_long) {
|
---|
| 940 | ncrn = (ncrn + 1) & -2;
|
---|
| 941 | if (ncrn == 4) {
|
---|
| 942 | argno++;
|
---|
| 943 | break;
|
---|
| 944 | }
|
---|
| 945 | }
|
---|
| 946 | plan[argno++][0]=ncrn++;
|
---|
| 947 | if (is_long) {
|
---|
| 948 | plan[argno-1][1]=ncrn++;
|
---|
| 949 | }
|
---|
| 950 | continue;
|
---|
| 951 | }
|
---|
| 952 | argno++;
|
---|
| 953 | }
|
---|
| 954 | #ifdef TCC_ARM_EABI
|
---|
| 955 | if(args_size & (align-1)) {
|
---|
| 956 | vpushi(0);
|
---|
| 957 | vtop->type.t = VT_VOID; /* padding */
|
---|
| 958 | vrott(i+2);
|
---|
| 959 | args_size += 4;
|
---|
| 960 | nb_args++;
|
---|
| 961 | argno++;
|
---|
| 962 | }
|
---|
| 963 | #endif
|
---|
| 964 | args_size += (size + 3) & -4;
|
---|
| 965 | }
|
---|
| 966 | #ifdef TCC_ARM_EABI
|
---|
| 967 | vtop--, nb_args--;
|
---|
| 968 | #endif
|
---|
| 969 | args_size = keep = 0;
|
---|
| 970 | for(i = 0;i < nb_args; i++) {
|
---|
| 971 | vrotb(keep+1);
|
---|
| 972 | if ((vtop->type.t & VT_BTYPE) == VT_STRUCT) {
|
---|
| 973 | size = type_size(&vtop->type, &align);
|
---|
| 974 | /* align to stack align size */
|
---|
| 975 | size = (size + 3) & -4;
|
---|
| 976 | /* allocate the necessary size on stack */
|
---|
| 977 | gadd_sp(-size);
|
---|
| 978 | /* generate structure store */
|
---|
| 979 | r = get_reg(RC_INT);
|
---|
| 980 | o(0xE1A0000D|(intr(r)<<12));
|
---|
| 981 | vset(&vtop->type, r | VT_LVAL, 0);
|
---|
| 982 | vswap();
|
---|
| 983 | vstore();
|
---|
| 984 | vtop--;
|
---|
| 985 | args_size += size;
|
---|
| 986 | } else if (is_float(vtop->type.t)) {
|
---|
| 987 | #ifdef TCC_ARM_HARDFLOAT
|
---|
| 988 | if (!variadic && --vfp_argno<16 && vfp_plan[vfp_argno]!=-1) {
|
---|
| 989 | plan2[keep++]=vfp_plan[vfp_argno];
|
---|
| 990 | continue;
|
---|
| 991 | }
|
---|
| 992 | #endif
|
---|
| 993 | #ifdef TCC_ARM_VFP
|
---|
| 994 | r=vfpr(gv(RC_FLOAT))<<12;
|
---|
| 995 | size=4;
|
---|
| 996 | if ((vtop->type.t & VT_BTYPE) != VT_FLOAT)
|
---|
| 997 | {
|
---|
| 998 | size=8;
|
---|
| 999 | r|=0x101; /* fstms -> fstmd */
|
---|
| 1000 | }
|
---|
| 1001 | o(0xED2D0A01+r);
|
---|
| 1002 | #else
|
---|
| 1003 | r=fpr(gv(RC_FLOAT))<<12;
|
---|
| 1004 | if ((vtop->type.t & VT_BTYPE) == VT_FLOAT)
|
---|
| 1005 | size = 4;
|
---|
| 1006 | else if ((vtop->type.t & VT_BTYPE) == VT_DOUBLE)
|
---|
| 1007 | size = 8;
|
---|
| 1008 | else
|
---|
| 1009 | size = LDOUBLE_SIZE;
|
---|
| 1010 |
|
---|
| 1011 | if (size == 12)
|
---|
| 1012 | r|=0x400000;
|
---|
| 1013 | else if(size == 8)
|
---|
| 1014 | r|=0x8000;
|
---|
| 1015 |
|
---|
| 1016 | o(0xED2D0100|r|(size>>2));
|
---|
| 1017 | #endif
|
---|
| 1018 | vtop--;
|
---|
| 1019 | args_size += size;
|
---|
| 1020 | } else {
|
---|
| 1021 | int s;
|
---|
| 1022 | /* simple type (currently always same size) */
|
---|
| 1023 | /* XXX: implicit cast ? */
|
---|
| 1024 | size=4;
|
---|
| 1025 | if ((vtop->type.t & VT_BTYPE) == VT_LLONG) {
|
---|
| 1026 | lexpand_nr();
|
---|
| 1027 | s=-1;
|
---|
| 1028 | if(--argno<4 && plan[argno][1]!=-1)
|
---|
| 1029 | s=plan[argno][1];
|
---|
| 1030 | argno++;
|
---|
| 1031 | size = 8;
|
---|
| 1032 | if(s==-1) {
|
---|
| 1033 | r = gv(RC_INT);
|
---|
| 1034 | o(0xE52D0004|(intr(r)<<12)); /* str r,[sp,#-4]! */
|
---|
| 1035 | vtop--;
|
---|
| 1036 | } else {
|
---|
| 1037 | size=0;
|
---|
| 1038 | plan2[keep]=s;
|
---|
| 1039 | keep++;
|
---|
| 1040 | vswap();
|
---|
| 1041 | }
|
---|
| 1042 | }
|
---|
| 1043 | s=-1;
|
---|
| 1044 | if(--argno<4 && plan[argno][0]!=-1)
|
---|
| 1045 | s=plan[argno][0];
|
---|
| 1046 | #ifdef TCC_ARM_EABI
|
---|
| 1047 | if(vtop->type.t == VT_VOID) {
|
---|
| 1048 | if(s == -1)
|
---|
| 1049 | o(0xE24DD004); /* sub sp,sp,#4 */
|
---|
| 1050 | vtop--;
|
---|
| 1051 | } else
|
---|
| 1052 | #endif
|
---|
| 1053 | if(s == -1) {
|
---|
| 1054 | r = gv(RC_INT);
|
---|
| 1055 | o(0xE52D0004|(intr(r)<<12)); /* str r,[sp,#-4]! */
|
---|
| 1056 | vtop--;
|
---|
| 1057 | } else {
|
---|
| 1058 | size=0;
|
---|
| 1059 | plan2[keep]=s;
|
---|
| 1060 | keep++;
|
---|
| 1061 | }
|
---|
| 1062 | args_size += size;
|
---|
| 1063 | }
|
---|
| 1064 | }
|
---|
| 1065 | for(i = 0; i < keep; i++) {
|
---|
| 1066 | vrotb(keep);
|
---|
| 1067 | gv(regmask(plan2[i]));
|
---|
| 1068 | #ifdef TCC_ARM_HARDFLOAT
|
---|
| 1069 | /* arg is in s(2d+1): plan2[i]<plan2[i+1] => alignment occured (ex f,d,f) */
|
---|
| 1070 | if (i < keep - 1 && is_float(vtop->type.t) && (plan2[i] <= plan2[i + 1])) {
|
---|
| 1071 | o(0xEEF00A40|(vfpr(plan2[i])<<12)|vfpr(plan2[i]));
|
---|
| 1072 | }
|
---|
| 1073 | #endif
|
---|
| 1074 | }
|
---|
| 1075 | save_regs(keep); /* save used temporary registers */
|
---|
| 1076 | keep++;
|
---|
| 1077 | if(ncrn) {
|
---|
| 1078 | int nb_regs=0;
|
---|
| 1079 | if (ncrn>4)
|
---|
| 1080 | ncrn=4;
|
---|
| 1081 | todo&=((1<<ncrn)-1);
|
---|
| 1082 | if(todo) {
|
---|
| 1083 | int i;
|
---|
| 1084 | o(0xE8BD0000|todo);
|
---|
| 1085 | for(i=0;i<4;i++)
|
---|
| 1086 | if(todo&(1<<i)) {
|
---|
| 1087 | vpushi(0);
|
---|
| 1088 | vtop->r=i;
|
---|
| 1089 | keep++;
|
---|
| 1090 | nb_regs++;
|
---|
| 1091 | }
|
---|
| 1092 | }
|
---|
| 1093 | args_size-=nb_regs*4;
|
---|
| 1094 | }
|
---|
| 1095 | if(vfp_todo) {
|
---|
| 1096 | int nb_fregs=0;
|
---|
| 1097 |
|
---|
| 1098 | for(i=0;i<16;i++)
|
---|
| 1099 | if(vfp_todo&(1<<i)) {
|
---|
| 1100 | o(0xED9D0A00|(i&1)<<22|(i>>1)<<12|nb_fregs);
|
---|
| 1101 | vpushi(0);
|
---|
| 1102 | /* There might be 2 floats in a double VFP reg but that doesn't seem
|
---|
| 1103 | to matter */
|
---|
| 1104 | if (!(i%2))
|
---|
| 1105 | vtop->r=TREG_F0+i/2;
|
---|
| 1106 | keep++;
|
---|
| 1107 | nb_fregs++;
|
---|
| 1108 | }
|
---|
| 1109 | if (nb_fregs) {
|
---|
| 1110 | gadd_sp(nb_fregs*4);
|
---|
| 1111 | args_size-=nb_fregs*4;
|
---|
| 1112 | }
|
---|
| 1113 | }
|
---|
| 1114 | vrotb(keep);
|
---|
| 1115 | gcall_or_jmp(0);
|
---|
| 1116 | if (args_size)
|
---|
| 1117 | gadd_sp(args_size);
|
---|
| 1118 | #ifdef TCC_ARM_EABI
|
---|
| 1119 | if((vtop->type.ref->type.t & VT_BTYPE) == VT_STRUCT
|
---|
| 1120 | && type_size(&vtop->type.ref->type, &align) <= 4)
|
---|
| 1121 | {
|
---|
| 1122 | store(REG_IRET,vtop-keep);
|
---|
| 1123 | ++keep;
|
---|
| 1124 | }
|
---|
| 1125 | #ifdef TCC_ARM_VFP
|
---|
| 1126 | #ifdef TCC_ARM_HARDFLOAT
|
---|
| 1127 | else if(variadic && is_float(vtop->type.ref->type.t)) {
|
---|
| 1128 | #else
|
---|
| 1129 | else if(is_float(vtop->type.ref->type.t)) {
|
---|
| 1130 | #endif
|
---|
| 1131 | if((vtop->type.ref->type.t & VT_BTYPE) == VT_FLOAT) {
|
---|
| 1132 | o(0xEE000A10); /* fmsr s0,r0 */
|
---|
| 1133 | } else {
|
---|
| 1134 | o(0xEE000B10); /* fmdlr d0,r0 */
|
---|
| 1135 | o(0xEE201B10); /* fmdhr d0,r1 */
|
---|
| 1136 | }
|
---|
| 1137 | }
|
---|
| 1138 | #endif
|
---|
| 1139 | #endif
|
---|
| 1140 | vtop-=keep;
|
---|
| 1141 | leaffunc = 0;
|
---|
| 1142 | }
|
---|
| 1143 |
|
---|
| 1144 | /* generate function prolog of type 't' */
|
---|
| 1145 | void gfunc_prolog(CType *func_type)
|
---|
| 1146 | {
|
---|
| 1147 | Sym *sym,*sym2;
|
---|
| 1148 | int n,nf,size,align, variadic, struct_ret = 0;
|
---|
| 1149 | #ifdef TCC_ARM_HARDFLOAT
|
---|
| 1150 | struct avail_regs avregs = AVAIL_REGS_INITIALIZER;
|
---|
| 1151 | #endif
|
---|
| 1152 |
|
---|
| 1153 | sym = func_type->ref;
|
---|
| 1154 | func_vt = sym->type;
|
---|
| 1155 |
|
---|
| 1156 | n = nf = 0;
|
---|
| 1157 | variadic = (func_type->ref->c == FUNC_ELLIPSIS);
|
---|
| 1158 | if((func_vt.t & VT_BTYPE) == VT_STRUCT
|
---|
| 1159 | && type_size(&func_vt,&align) > 4)
|
---|
| 1160 | {
|
---|
| 1161 | n++;
|
---|
| 1162 | struct_ret = 1;
|
---|
| 1163 | func_vc = 12; /* Offset from fp of the place to store the result */
|
---|
| 1164 | }
|
---|
| 1165 | for(sym2=sym->next;sym2 && (n<4 || nf<16);sym2=sym2->next) {
|
---|
| 1166 | size = type_size(&sym2->type, &align);
|
---|
| 1167 | #ifdef TCC_ARM_HARDFLOAT
|
---|
| 1168 | if (!variadic && (is_float(sym2->type.t)
|
---|
| 1169 | || is_float_hgen_aggr(&sym2->type))) {
|
---|
| 1170 | int tmpnf = assign_fpreg(&avregs, align, size) + 1;
|
---|
| 1171 | nf = (tmpnf > nf) ? tmpnf : nf;
|
---|
| 1172 | } else
|
---|
| 1173 | #endif
|
---|
| 1174 | if (n < 4)
|
---|
| 1175 | n += (size + 3) / 4;
|
---|
| 1176 | }
|
---|
| 1177 | o(0xE1A0C00D); /* mov ip,sp */
|
---|
| 1178 | if(variadic)
|
---|
| 1179 | n=4;
|
---|
| 1180 | if(n) {
|
---|
| 1181 | if(n>4)
|
---|
| 1182 | n=4;
|
---|
| 1183 | #ifdef TCC_ARM_EABI
|
---|
| 1184 | n=(n+1)&-2;
|
---|
| 1185 | #endif
|
---|
| 1186 | o(0xE92D0000|((1<<n)-1)); /* save r0-r4 on stack if needed */
|
---|
| 1187 | }
|
---|
| 1188 | if (nf) {
|
---|
| 1189 | if (nf>16)
|
---|
| 1190 | nf=16;
|
---|
| 1191 | nf=(nf+1)&-2; /* nf => HARDFLOAT => EABI */
|
---|
| 1192 | o(0xED2D0A00|nf); /* save s0-s15 on stack if needed */
|
---|
| 1193 | }
|
---|
| 1194 | o(0xE92D5800); /* save fp, ip, lr */
|
---|
| 1195 | o(0xE1A0B00D); /* mov fp, sp */
|
---|
| 1196 | func_sub_sp_offset = ind;
|
---|
| 1197 | o(0xE1A00000); /* nop, leave space for stack adjustment in epilogue */
|
---|
| 1198 | {
|
---|
| 1199 | int addr, pn = struct_ret, sn = 0; /* pn=core, sn=stack */
|
---|
| 1200 |
|
---|
| 1201 | #ifdef TCC_ARM_HARDFLOAT
|
---|
| 1202 | avregs = AVAIL_REGS_INITIALIZER;
|
---|
| 1203 | #endif
|
---|
| 1204 | while ((sym = sym->next)) {
|
---|
| 1205 | CType *type;
|
---|
| 1206 | type = &sym->type;
|
---|
| 1207 | size = type_size(type, &align);
|
---|
| 1208 | size = (size + 3) >> 2;
|
---|
| 1209 | align = (align + 3) & ~3;
|
---|
| 1210 | #ifdef TCC_ARM_HARDFLOAT
|
---|
| 1211 | if (!variadic && (is_float(sym->type.t)
|
---|
| 1212 | || is_float_hgen_aggr(&sym->type))) {
|
---|
| 1213 | int fpn = assign_fpreg(&avregs, align, size << 2);
|
---|
| 1214 | if (fpn >= 0) {
|
---|
| 1215 | addr = fpn * 4;
|
---|
| 1216 | } else
|
---|
| 1217 | goto from_stack;
|
---|
| 1218 | } else
|
---|
| 1219 | #endif
|
---|
| 1220 | if (pn < 4) {
|
---|
| 1221 | #ifdef TCC_ARM_EABI
|
---|
| 1222 | pn = (pn + (align-1)/4) & -(align/4);
|
---|
| 1223 | #endif
|
---|
| 1224 | addr = (nf + pn) * 4;
|
---|
| 1225 | pn += size;
|
---|
| 1226 | if (!sn && pn > 4)
|
---|
| 1227 | sn = (pn - 4);
|
---|
| 1228 | } else {
|
---|
| 1229 | #ifdef TCC_ARM_HARDFLOAT
|
---|
| 1230 | from_stack:
|
---|
| 1231 | #endif
|
---|
| 1232 | #ifdef TCC_ARM_EABI
|
---|
| 1233 | sn = (sn + (align-1)/4) & -(align/4);
|
---|
| 1234 | #endif
|
---|
| 1235 | addr = (n + nf + sn) * 4;
|
---|
| 1236 | sn += size;
|
---|
| 1237 | }
|
---|
| 1238 | sym_push(sym->v & ~SYM_FIELD, type, VT_LOCAL | lvalue_type(type->t), addr+12);
|
---|
| 1239 | }
|
---|
| 1240 | }
|
---|
| 1241 | last_itod_magic=0;
|
---|
| 1242 | leaffunc = 1;
|
---|
| 1243 | loc = 0;
|
---|
| 1244 | }
|
---|
| 1245 |
|
---|
| 1246 | /* generate function epilog */
|
---|
| 1247 | void gfunc_epilog(void)
|
---|
| 1248 | {
|
---|
| 1249 | uint32_t x;
|
---|
| 1250 | int diff;
|
---|
| 1251 | #ifdef TCC_ARM_EABI
|
---|
| 1252 | /* Useless but harmless copy of the float result into main register(s) in case
|
---|
| 1253 | of variadic function in the hardfloat variant */
|
---|
| 1254 | if(is_float(func_vt.t)) {
|
---|
| 1255 | if((func_vt.t & VT_BTYPE) == VT_FLOAT)
|
---|
| 1256 | o(0xEE100A10); /* fmrs r0, s0 */
|
---|
| 1257 | else {
|
---|
| 1258 | o(0xEE100B10); /* fmrdl r0, d0 */
|
---|
| 1259 | o(0xEE301B10); /* fmrdh r1, d0 */
|
---|
| 1260 | }
|
---|
| 1261 | }
|
---|
| 1262 | #endif
|
---|
| 1263 | o(0xE89BA800); /* restore fp, sp, pc */
|
---|
| 1264 | diff = (-loc + 3) & -4;
|
---|
| 1265 | #ifdef TCC_ARM_EABI
|
---|
| 1266 | if(!leaffunc)
|
---|
| 1267 | diff = ((diff + 11) & -8) - 4;
|
---|
| 1268 | #endif
|
---|
| 1269 | if(diff > 0) {
|
---|
| 1270 | x=stuff_const(0xE24BD000, diff); /* sub sp,fp,# */
|
---|
| 1271 | if(x)
|
---|
| 1272 | *(uint32_t *)(cur_text_section->data + func_sub_sp_offset) = x;
|
---|
| 1273 | else {
|
---|
| 1274 | int addr;
|
---|
| 1275 | addr=ind;
|
---|
| 1276 | o(0xE59FC004); /* ldr ip,[pc+4] */
|
---|
| 1277 | o(0xE04BD00C); /* sub sp,fp,ip */
|
---|
| 1278 | o(0xE1A0F00E); /* mov pc,lr */
|
---|
| 1279 | o(diff);
|
---|
| 1280 | *(uint32_t *)(cur_text_section->data + func_sub_sp_offset) = 0xE1000000|encbranch(func_sub_sp_offset,addr,1);
|
---|
| 1281 | }
|
---|
| 1282 | }
|
---|
| 1283 | }
|
---|
| 1284 |
|
---|
| 1285 | /* generate a jump to a label */
|
---|
| 1286 | int gjmp(int t)
|
---|
| 1287 | {
|
---|
| 1288 | int r;
|
---|
| 1289 | r=ind;
|
---|
| 1290 | o(0xE0000000|encbranch(r,t,1));
|
---|
| 1291 | return r;
|
---|
| 1292 | }
|
---|
| 1293 |
|
---|
| 1294 | /* generate a jump to a fixed address */
|
---|
| 1295 | void gjmp_addr(int a)
|
---|
| 1296 | {
|
---|
| 1297 | gjmp(a);
|
---|
| 1298 | }
|
---|
| 1299 |
|
---|
| 1300 | /* generate a test. set 'inv' to invert test. Stack entry is popped */
|
---|
| 1301 | int gtst(int inv, int t)
|
---|
| 1302 | {
|
---|
| 1303 | int v, r;
|
---|
| 1304 | uint32_t op;
|
---|
| 1305 | v = vtop->r & VT_VALMASK;
|
---|
| 1306 | r=ind;
|
---|
| 1307 | if (v == VT_CMP) {
|
---|
| 1308 | op=mapcc(inv?negcc(vtop->c.i):vtop->c.i);
|
---|
| 1309 | op|=encbranch(r,t,1);
|
---|
| 1310 | o(op);
|
---|
| 1311 | t=r;
|
---|
| 1312 | } else if (v == VT_JMP || v == VT_JMPI) {
|
---|
| 1313 | if ((v & 1) == inv) {
|
---|
| 1314 | if(!vtop->c.i)
|
---|
| 1315 | vtop->c.i=t;
|
---|
| 1316 | else {
|
---|
| 1317 | uint32_t *x;
|
---|
| 1318 | int p,lp;
|
---|
| 1319 | if(t) {
|
---|
| 1320 | p = vtop->c.i;
|
---|
| 1321 | do {
|
---|
| 1322 | p = decbranch(lp=p);
|
---|
| 1323 | } while(p);
|
---|
| 1324 | x = (uint32_t *)(cur_text_section->data + lp);
|
---|
| 1325 | *x &= 0xff000000;
|
---|
| 1326 | *x |= encbranch(lp,t,1);
|
---|
| 1327 | }
|
---|
| 1328 | t = vtop->c.i;
|
---|
| 1329 | }
|
---|
| 1330 | } else {
|
---|
| 1331 | t = gjmp(t);
|
---|
| 1332 | gsym(vtop->c.i);
|
---|
| 1333 | }
|
---|
| 1334 | } else {
|
---|
| 1335 | if (is_float(vtop->type.t)) {
|
---|
| 1336 | r=gv(RC_FLOAT);
|
---|
| 1337 | #ifdef TCC_ARM_VFP
|
---|
| 1338 | o(0xEEB50A40|(vfpr(r)<<12)|T2CPR(vtop->type.t)); /* fcmpzX */
|
---|
| 1339 | o(0xEEF1FA10); /* fmstat */
|
---|
| 1340 | #else
|
---|
| 1341 | o(0xEE90F118|(fpr(r)<<16));
|
---|
| 1342 | #endif
|
---|
| 1343 | vtop->r = VT_CMP;
|
---|
| 1344 | vtop->c.i = TOK_NE;
|
---|
| 1345 | return gtst(inv, t);
|
---|
| 1346 | } else if ((vtop->r & (VT_VALMASK | VT_LVAL | VT_SYM)) == VT_CONST) {
|
---|
| 1347 | /* constant jmp optimization */
|
---|
| 1348 | if ((vtop->c.i != 0) != inv)
|
---|
| 1349 | t = gjmp(t);
|
---|
| 1350 | } else {
|
---|
| 1351 | v = gv(RC_INT);
|
---|
| 1352 | o(0xE3300000|(intr(v)<<16));
|
---|
| 1353 | vtop->r = VT_CMP;
|
---|
| 1354 | vtop->c.i = TOK_NE;
|
---|
| 1355 | return gtst(inv, t);
|
---|
| 1356 | }
|
---|
| 1357 | }
|
---|
| 1358 | vtop--;
|
---|
| 1359 | return t;
|
---|
| 1360 | }
|
---|
| 1361 |
|
---|
| 1362 | /* generate an integer binary operation */
|
---|
| 1363 | void gen_opi(int op)
|
---|
| 1364 | {
|
---|
| 1365 | int c, func = 0;
|
---|
| 1366 | uint32_t opc = 0, r, fr;
|
---|
| 1367 | unsigned short retreg = REG_IRET;
|
---|
| 1368 |
|
---|
| 1369 | c=0;
|
---|
| 1370 | switch(op) {
|
---|
| 1371 | case '+':
|
---|
| 1372 | opc = 0x8;
|
---|
| 1373 | c=1;
|
---|
| 1374 | break;
|
---|
| 1375 | case TOK_ADDC1: /* add with carry generation */
|
---|
| 1376 | opc = 0x9;
|
---|
| 1377 | c=1;
|
---|
| 1378 | break;
|
---|
| 1379 | case '-':
|
---|
| 1380 | opc = 0x4;
|
---|
| 1381 | c=1;
|
---|
| 1382 | break;
|
---|
| 1383 | case TOK_SUBC1: /* sub with carry generation */
|
---|
| 1384 | opc = 0x5;
|
---|
| 1385 | c=1;
|
---|
| 1386 | break;
|
---|
| 1387 | case TOK_ADDC2: /* add with carry use */
|
---|
| 1388 | opc = 0xA;
|
---|
| 1389 | c=1;
|
---|
| 1390 | break;
|
---|
| 1391 | case TOK_SUBC2: /* sub with carry use */
|
---|
| 1392 | opc = 0xC;
|
---|
| 1393 | c=1;
|
---|
| 1394 | break;
|
---|
| 1395 | case '&':
|
---|
| 1396 | opc = 0x0;
|
---|
| 1397 | c=1;
|
---|
| 1398 | break;
|
---|
| 1399 | case '^':
|
---|
| 1400 | opc = 0x2;
|
---|
| 1401 | c=1;
|
---|
| 1402 | break;
|
---|
| 1403 | case '|':
|
---|
| 1404 | opc = 0x18;
|
---|
| 1405 | c=1;
|
---|
| 1406 | break;
|
---|
| 1407 | case '*':
|
---|
| 1408 | gv2(RC_INT, RC_INT);
|
---|
| 1409 | r = vtop[-1].r;
|
---|
| 1410 | fr = vtop[0].r;
|
---|
| 1411 | vtop--;
|
---|
| 1412 | o(0xE0000090|(intr(r)<<16)|(intr(r)<<8)|intr(fr));
|
---|
| 1413 | return;
|
---|
| 1414 | case TOK_SHL:
|
---|
| 1415 | opc = 0;
|
---|
| 1416 | c=2;
|
---|
| 1417 | break;
|
---|
| 1418 | case TOK_SHR:
|
---|
| 1419 | opc = 1;
|
---|
| 1420 | c=2;
|
---|
| 1421 | break;
|
---|
| 1422 | case TOK_SAR:
|
---|
| 1423 | opc = 2;
|
---|
| 1424 | c=2;
|
---|
| 1425 | break;
|
---|
| 1426 | case '/':
|
---|
| 1427 | case TOK_PDIV:
|
---|
| 1428 | func=TOK___divsi3;
|
---|
| 1429 | c=3;
|
---|
| 1430 | break;
|
---|
| 1431 | case TOK_UDIV:
|
---|
| 1432 | func=TOK___udivsi3;
|
---|
| 1433 | c=3;
|
---|
| 1434 | break;
|
---|
| 1435 | case '%':
|
---|
| 1436 | #ifdef TCC_ARM_EABI
|
---|
| 1437 | func=TOK___aeabi_idivmod;
|
---|
| 1438 | retreg=REG_LRET;
|
---|
| 1439 | #else
|
---|
| 1440 | func=TOK___modsi3;
|
---|
| 1441 | #endif
|
---|
| 1442 | c=3;
|
---|
| 1443 | break;
|
---|
| 1444 | case TOK_UMOD:
|
---|
| 1445 | #ifdef TCC_ARM_EABI
|
---|
| 1446 | func=TOK___aeabi_uidivmod;
|
---|
| 1447 | retreg=REG_LRET;
|
---|
| 1448 | #else
|
---|
| 1449 | func=TOK___umodsi3;
|
---|
| 1450 | #endif
|
---|
| 1451 | c=3;
|
---|
| 1452 | break;
|
---|
| 1453 | case TOK_UMULL:
|
---|
| 1454 | gv2(RC_INT, RC_INT);
|
---|
| 1455 | r=intr(vtop[-1].r2=get_reg(RC_INT));
|
---|
| 1456 | c=vtop[-1].r;
|
---|
| 1457 | vtop[-1].r=get_reg_ex(RC_INT,regmask(c));
|
---|
| 1458 | vtop--;
|
---|
| 1459 | o(0xE0800090|(r<<16)|(intr(vtop->r)<<12)|(intr(c)<<8)|intr(vtop[1].r));
|
---|
| 1460 | return;
|
---|
| 1461 | default:
|
---|
| 1462 | opc = 0x15;
|
---|
| 1463 | c=1;
|
---|
| 1464 | break;
|
---|
| 1465 | }
|
---|
| 1466 | switch(c) {
|
---|
| 1467 | case 1:
|
---|
| 1468 | if((vtop[-1].r & (VT_VALMASK | VT_LVAL | VT_SYM)) == VT_CONST) {
|
---|
| 1469 | if(opc == 4 || opc == 5 || opc == 0xc) {
|
---|
| 1470 | vswap();
|
---|
| 1471 | opc|=2; // sub -> rsb
|
---|
| 1472 | }
|
---|
| 1473 | }
|
---|
| 1474 | if ((vtop->r & VT_VALMASK) == VT_CMP ||
|
---|
| 1475 | (vtop->r & (VT_VALMASK & ~1)) == VT_JMP)
|
---|
| 1476 | gv(RC_INT);
|
---|
| 1477 | vswap();
|
---|
| 1478 | c=intr(gv(RC_INT));
|
---|
| 1479 | vswap();
|
---|
| 1480 | opc=0xE0000000|(opc<<20)|(c<<16);
|
---|
| 1481 | if((vtop->r & (VT_VALMASK | VT_LVAL | VT_SYM)) == VT_CONST) {
|
---|
| 1482 | uint32_t x;
|
---|
| 1483 | x=stuff_const(opc|0x2000000,vtop->c.i);
|
---|
| 1484 | if(x) {
|
---|
| 1485 | r=intr(vtop[-1].r=get_reg_ex(RC_INT,regmask(vtop[-1].r)));
|
---|
| 1486 | o(x|(r<<12));
|
---|
| 1487 | goto done;
|
---|
| 1488 | }
|
---|
| 1489 | }
|
---|
| 1490 | fr=intr(gv(RC_INT));
|
---|
| 1491 | r=intr(vtop[-1].r=get_reg_ex(RC_INT,two2mask(vtop->r,vtop[-1].r)));
|
---|
| 1492 | o(opc|(r<<12)|fr);
|
---|
| 1493 | done:
|
---|
| 1494 | vtop--;
|
---|
| 1495 | if (op >= TOK_ULT && op <= TOK_GT) {
|
---|
| 1496 | vtop->r = VT_CMP;
|
---|
| 1497 | vtop->c.i = op;
|
---|
| 1498 | }
|
---|
| 1499 | break;
|
---|
| 1500 | case 2:
|
---|
| 1501 | opc=0xE1A00000|(opc<<5);
|
---|
| 1502 | if ((vtop->r & VT_VALMASK) == VT_CMP ||
|
---|
| 1503 | (vtop->r & (VT_VALMASK & ~1)) == VT_JMP)
|
---|
| 1504 | gv(RC_INT);
|
---|
| 1505 | vswap();
|
---|
| 1506 | r=intr(gv(RC_INT));
|
---|
| 1507 | vswap();
|
---|
| 1508 | opc|=r;
|
---|
| 1509 | if ((vtop->r & (VT_VALMASK | VT_LVAL | VT_SYM)) == VT_CONST) {
|
---|
| 1510 | fr=intr(vtop[-1].r=get_reg_ex(RC_INT,regmask(vtop[-1].r)));
|
---|
| 1511 | c = vtop->c.i & 0x1f;
|
---|
| 1512 | o(opc|(c<<7)|(fr<<12));
|
---|
| 1513 | } else {
|
---|
| 1514 | fr=intr(gv(RC_INT));
|
---|
| 1515 | c=intr(vtop[-1].r=get_reg_ex(RC_INT,two2mask(vtop->r,vtop[-1].r)));
|
---|
| 1516 | o(opc|(c<<12)|(fr<<8)|0x10);
|
---|
| 1517 | }
|
---|
| 1518 | vtop--;
|
---|
| 1519 | break;
|
---|
| 1520 | case 3:
|
---|
| 1521 | vpush_global_sym(&func_old_type, func);
|
---|
| 1522 | vrott(3);
|
---|
| 1523 | gfunc_call(2);
|
---|
| 1524 | vpushi(0);
|
---|
| 1525 | vtop->r = retreg;
|
---|
| 1526 | break;
|
---|
| 1527 | default:
|
---|
| 1528 | tcc_error("gen_opi %i unimplemented!",op);
|
---|
| 1529 | }
|
---|
| 1530 | }
|
---|
| 1531 |
|
---|
| 1532 | #ifdef TCC_ARM_VFP
|
---|
| 1533 | static int is_zero(int i)
|
---|
| 1534 | {
|
---|
| 1535 | if((vtop[i].r & (VT_VALMASK | VT_LVAL | VT_SYM)) != VT_CONST)
|
---|
| 1536 | return 0;
|
---|
| 1537 | if (vtop[i].type.t == VT_FLOAT)
|
---|
| 1538 | return (vtop[i].c.f == 0.f);
|
---|
| 1539 | else if (vtop[i].type.t == VT_DOUBLE)
|
---|
| 1540 | return (vtop[i].c.d == 0.0);
|
---|
| 1541 | return (vtop[i].c.ld == 0.l);
|
---|
| 1542 | }
|
---|
| 1543 |
|
---|
| 1544 | /* generate a floating point operation 'v = t1 op t2' instruction. The
|
---|
| 1545 | * two operands are guaranted to have the same floating point type */
|
---|
| 1546 | void gen_opf(int op)
|
---|
| 1547 | {
|
---|
| 1548 | uint32_t x;
|
---|
| 1549 | int fneg=0,r;
|
---|
| 1550 | x=0xEE000A00|T2CPR(vtop->type.t);
|
---|
| 1551 | switch(op) {
|
---|
| 1552 | case '+':
|
---|
| 1553 | if(is_zero(-1))
|
---|
| 1554 | vswap();
|
---|
| 1555 | if(is_zero(0)) {
|
---|
| 1556 | vtop--;
|
---|
| 1557 | return;
|
---|
| 1558 | }
|
---|
| 1559 | x|=0x300000;
|
---|
| 1560 | break;
|
---|
| 1561 | case '-':
|
---|
| 1562 | x|=0x300040;
|
---|
| 1563 | if(is_zero(0)) {
|
---|
| 1564 | vtop--;
|
---|
| 1565 | return;
|
---|
| 1566 | }
|
---|
| 1567 | if(is_zero(-1)) {
|
---|
| 1568 | x|=0x810000; /* fsubX -> fnegX */
|
---|
| 1569 | vswap();
|
---|
| 1570 | vtop--;
|
---|
| 1571 | fneg=1;
|
---|
| 1572 | }
|
---|
| 1573 | break;
|
---|
| 1574 | case '*':
|
---|
| 1575 | x|=0x200000;
|
---|
| 1576 | break;
|
---|
| 1577 | case '/':
|
---|
| 1578 | x|=0x800000;
|
---|
| 1579 | break;
|
---|
| 1580 | default:
|
---|
| 1581 | if(op < TOK_ULT || op > TOK_GT) {
|
---|
| 1582 | tcc_error("unknown fp op %x!",op);
|
---|
| 1583 | return;
|
---|
| 1584 | }
|
---|
| 1585 | if(is_zero(-1)) {
|
---|
| 1586 | vswap();
|
---|
| 1587 | switch(op) {
|
---|
| 1588 | case TOK_LT: op=TOK_GT; break;
|
---|
| 1589 | case TOK_GE: op=TOK_ULE; break;
|
---|
| 1590 | case TOK_LE: op=TOK_GE; break;
|
---|
| 1591 | case TOK_GT: op=TOK_ULT; break;
|
---|
| 1592 | }
|
---|
| 1593 | }
|
---|
| 1594 | x|=0xB40040; /* fcmpX */
|
---|
| 1595 | if(op!=TOK_EQ && op!=TOK_NE)
|
---|
| 1596 | x|=0x80; /* fcmpX -> fcmpeX */
|
---|
| 1597 | if(is_zero(0)) {
|
---|
| 1598 | vtop--;
|
---|
| 1599 | o(x|0x10000|(vfpr(gv(RC_FLOAT))<<12)); /* fcmp(e)X -> fcmp(e)zX */
|
---|
| 1600 | } else {
|
---|
| 1601 | x|=vfpr(gv(RC_FLOAT));
|
---|
| 1602 | vswap();
|
---|
| 1603 | o(x|(vfpr(gv(RC_FLOAT))<<12));
|
---|
| 1604 | vtop--;
|
---|
| 1605 | }
|
---|
| 1606 | o(0xEEF1FA10); /* fmstat */
|
---|
| 1607 |
|
---|
| 1608 | switch(op) {
|
---|
| 1609 | case TOK_LE: op=TOK_ULE; break;
|
---|
| 1610 | case TOK_LT: op=TOK_ULT; break;
|
---|
| 1611 | case TOK_UGE: op=TOK_GE; break;
|
---|
| 1612 | case TOK_UGT: op=TOK_GT; break;
|
---|
| 1613 | }
|
---|
| 1614 |
|
---|
| 1615 | vtop->r = VT_CMP;
|
---|
| 1616 | vtop->c.i = op;
|
---|
| 1617 | return;
|
---|
| 1618 | }
|
---|
| 1619 | r=gv(RC_FLOAT);
|
---|
| 1620 | x|=vfpr(r);
|
---|
| 1621 | r=regmask(r);
|
---|
| 1622 | if(!fneg) {
|
---|
| 1623 | int r2;
|
---|
| 1624 | vswap();
|
---|
| 1625 | r2=gv(RC_FLOAT);
|
---|
| 1626 | x|=vfpr(r2)<<16;
|
---|
| 1627 | r|=regmask(r2);
|
---|
| 1628 | }
|
---|
| 1629 | vtop->r=get_reg_ex(RC_FLOAT,r);
|
---|
| 1630 | if(!fneg)
|
---|
| 1631 | vtop--;
|
---|
| 1632 | o(x|(vfpr(vtop->r)<<12));
|
---|
| 1633 | }
|
---|
| 1634 |
|
---|
| 1635 | #else
|
---|
| 1636 | static uint32_t is_fconst()
|
---|
| 1637 | {
|
---|
| 1638 | long double f;
|
---|
| 1639 | uint32_t r;
|
---|
| 1640 | if((vtop->r & (VT_VALMASK | VT_LVAL | VT_SYM)) != VT_CONST)
|
---|
| 1641 | return 0;
|
---|
| 1642 | if (vtop->type.t == VT_FLOAT)
|
---|
| 1643 | f = vtop->c.f;
|
---|
| 1644 | else if (vtop->type.t == VT_DOUBLE)
|
---|
| 1645 | f = vtop->c.d;
|
---|
| 1646 | else
|
---|
| 1647 | f = vtop->c.ld;
|
---|
| 1648 | if(!ieee_finite(f))
|
---|
| 1649 | return 0;
|
---|
| 1650 | r=0x8;
|
---|
| 1651 | if(f<0.0) {
|
---|
| 1652 | r=0x18;
|
---|
| 1653 | f=-f;
|
---|
| 1654 | }
|
---|
| 1655 | if(f==0.0)
|
---|
| 1656 | return r;
|
---|
| 1657 | if(f==1.0)
|
---|
| 1658 | return r|1;
|
---|
| 1659 | if(f==2.0)
|
---|
| 1660 | return r|2;
|
---|
| 1661 | if(f==3.0)
|
---|
| 1662 | return r|3;
|
---|
| 1663 | if(f==4.0)
|
---|
| 1664 | return r|4;
|
---|
| 1665 | if(f==5.0)
|
---|
| 1666 | return r|5;
|
---|
| 1667 | if(f==0.5)
|
---|
| 1668 | return r|6;
|
---|
| 1669 | if(f==10.0)
|
---|
| 1670 | return r|7;
|
---|
| 1671 | return 0;
|
---|
| 1672 | }
|
---|
| 1673 |
|
---|
| 1674 | /* generate a floating point operation 'v = t1 op t2' instruction. The
|
---|
| 1675 | two operands are guaranted to have the same floating point type */
|
---|
| 1676 | void gen_opf(int op)
|
---|
| 1677 | {
|
---|
| 1678 | uint32_t x, r, r2, c1, c2;
|
---|
| 1679 | //fputs("gen_opf\n",stderr);
|
---|
| 1680 | vswap();
|
---|
| 1681 | c1 = is_fconst();
|
---|
| 1682 | vswap();
|
---|
| 1683 | c2 = is_fconst();
|
---|
| 1684 | x=0xEE000100;
|
---|
| 1685 | #if LDOUBLE_SIZE == 8
|
---|
| 1686 | if ((vtop->type.t & VT_BTYPE) != VT_FLOAT)
|
---|
| 1687 | x|=0x80;
|
---|
| 1688 | #else
|
---|
| 1689 | if ((vtop->type.t & VT_BTYPE) == VT_DOUBLE)
|
---|
| 1690 | x|=0x80;
|
---|
| 1691 | else if ((vtop->type.t & VT_BTYPE) == VT_LDOUBLE)
|
---|
| 1692 | x|=0x80000;
|
---|
| 1693 | #endif
|
---|
| 1694 | switch(op)
|
---|
| 1695 | {
|
---|
| 1696 | case '+':
|
---|
| 1697 | if(!c2) {
|
---|
| 1698 | vswap();
|
---|
| 1699 | c2=c1;
|
---|
| 1700 | }
|
---|
| 1701 | vswap();
|
---|
| 1702 | r=fpr(gv(RC_FLOAT));
|
---|
| 1703 | vswap();
|
---|
| 1704 | if(c2) {
|
---|
| 1705 | if(c2>0xf)
|
---|
| 1706 | x|=0x200000; // suf
|
---|
| 1707 | r2=c2&0xf;
|
---|
| 1708 | } else {
|
---|
| 1709 | r2=fpr(gv(RC_FLOAT));
|
---|
| 1710 | }
|
---|
| 1711 | break;
|
---|
| 1712 | case '-':
|
---|
| 1713 | if(c2) {
|
---|
| 1714 | if(c2<=0xf)
|
---|
| 1715 | x|=0x200000; // suf
|
---|
| 1716 | r2=c2&0xf;
|
---|
| 1717 | vswap();
|
---|
| 1718 | r=fpr(gv(RC_FLOAT));
|
---|
| 1719 | vswap();
|
---|
| 1720 | } else if(c1 && c1<=0xf) {
|
---|
| 1721 | x|=0x300000; // rsf
|
---|
| 1722 | r2=c1;
|
---|
| 1723 | r=fpr(gv(RC_FLOAT));
|
---|
| 1724 | vswap();
|
---|
| 1725 | } else {
|
---|
| 1726 | x|=0x200000; // suf
|
---|
| 1727 | vswap();
|
---|
| 1728 | r=fpr(gv(RC_FLOAT));
|
---|
| 1729 | vswap();
|
---|
| 1730 | r2=fpr(gv(RC_FLOAT));
|
---|
| 1731 | }
|
---|
| 1732 | break;
|
---|
| 1733 | case '*':
|
---|
| 1734 | if(!c2 || c2>0xf) {
|
---|
| 1735 | vswap();
|
---|
| 1736 | c2=c1;
|
---|
| 1737 | }
|
---|
| 1738 | vswap();
|
---|
| 1739 | r=fpr(gv(RC_FLOAT));
|
---|
| 1740 | vswap();
|
---|
| 1741 | if(c2 && c2<=0xf)
|
---|
| 1742 | r2=c2;
|
---|
| 1743 | else
|
---|
| 1744 | r2=fpr(gv(RC_FLOAT));
|
---|
| 1745 | x|=0x100000; // muf
|
---|
| 1746 | break;
|
---|
| 1747 | case '/':
|
---|
| 1748 | if(c2 && c2<=0xf) {
|
---|
| 1749 | x|=0x400000; // dvf
|
---|
| 1750 | r2=c2;
|
---|
| 1751 | vswap();
|
---|
| 1752 | r=fpr(gv(RC_FLOAT));
|
---|
| 1753 | vswap();
|
---|
| 1754 | } else if(c1 && c1<=0xf) {
|
---|
| 1755 | x|=0x500000; // rdf
|
---|
| 1756 | r2=c1;
|
---|
| 1757 | r=fpr(gv(RC_FLOAT));
|
---|
| 1758 | vswap();
|
---|
| 1759 | } else {
|
---|
| 1760 | x|=0x400000; // dvf
|
---|
| 1761 | vswap();
|
---|
| 1762 | r=fpr(gv(RC_FLOAT));
|
---|
| 1763 | vswap();
|
---|
| 1764 | r2=fpr(gv(RC_FLOAT));
|
---|
| 1765 | }
|
---|
| 1766 | break;
|
---|
| 1767 | default:
|
---|
| 1768 | if(op >= TOK_ULT && op <= TOK_GT) {
|
---|
| 1769 | x|=0xd0f110; // cmfe
|
---|
| 1770 | /* bug (intention?) in Linux FPU emulator
|
---|
| 1771 | doesn't set carry if equal */
|
---|
| 1772 | switch(op) {
|
---|
| 1773 | case TOK_ULT:
|
---|
| 1774 | case TOK_UGE:
|
---|
| 1775 | case TOK_ULE:
|
---|
| 1776 | case TOK_UGT:
|
---|
| 1777 | tcc_error("unsigned comparision on floats?");
|
---|
| 1778 | break;
|
---|
| 1779 | case TOK_LT:
|
---|
| 1780 | op=TOK_Nset;
|
---|
| 1781 | break;
|
---|
| 1782 | case TOK_LE:
|
---|
| 1783 | op=TOK_ULE; /* correct in unordered case only if AC bit in FPSR set */
|
---|
| 1784 | break;
|
---|
| 1785 | case TOK_EQ:
|
---|
| 1786 | case TOK_NE:
|
---|
| 1787 | x&=~0x400000; // cmfe -> cmf
|
---|
| 1788 | break;
|
---|
| 1789 | }
|
---|
| 1790 | if(c1 && !c2) {
|
---|
| 1791 | c2=c1;
|
---|
| 1792 | vswap();
|
---|
| 1793 | switch(op) {
|
---|
| 1794 | case TOK_Nset:
|
---|
| 1795 | op=TOK_GT;
|
---|
| 1796 | break;
|
---|
| 1797 | case TOK_GE:
|
---|
| 1798 | op=TOK_ULE;
|
---|
| 1799 | break;
|
---|
| 1800 | case TOK_ULE:
|
---|
| 1801 | op=TOK_GE;
|
---|
| 1802 | break;
|
---|
| 1803 | case TOK_GT:
|
---|
| 1804 | op=TOK_Nset;
|
---|
| 1805 | break;
|
---|
| 1806 | }
|
---|
| 1807 | }
|
---|
| 1808 | vswap();
|
---|
| 1809 | r=fpr(gv(RC_FLOAT));
|
---|
| 1810 | vswap();
|
---|
| 1811 | if(c2) {
|
---|
| 1812 | if(c2>0xf)
|
---|
| 1813 | x|=0x200000;
|
---|
| 1814 | r2=c2&0xf;
|
---|
| 1815 | } else {
|
---|
| 1816 | r2=fpr(gv(RC_FLOAT));
|
---|
| 1817 | }
|
---|
| 1818 | vtop[-1].r = VT_CMP;
|
---|
| 1819 | vtop[-1].c.i = op;
|
---|
| 1820 | } else {
|
---|
| 1821 | tcc_error("unknown fp op %x!",op);
|
---|
| 1822 | return;
|
---|
| 1823 | }
|
---|
| 1824 | }
|
---|
| 1825 | if(vtop[-1].r == VT_CMP)
|
---|
| 1826 | c1=15;
|
---|
| 1827 | else {
|
---|
| 1828 | c1=vtop->r;
|
---|
| 1829 | if(r2&0x8)
|
---|
| 1830 | c1=vtop[-1].r;
|
---|
| 1831 | vtop[-1].r=get_reg_ex(RC_FLOAT,two2mask(vtop[-1].r,c1));
|
---|
| 1832 | c1=fpr(vtop[-1].r);
|
---|
| 1833 | }
|
---|
| 1834 | vtop--;
|
---|
| 1835 | o(x|(r<<16)|(c1<<12)|r2);
|
---|
| 1836 | }
|
---|
| 1837 | #endif
|
---|
| 1838 |
|
---|
| 1839 | /* convert integers to fp 't' type. Must handle 'int', 'unsigned int'
|
---|
| 1840 | and 'long long' cases. */
|
---|
| 1841 | ST_FUNC void gen_cvt_itof1(int t)
|
---|
| 1842 | {
|
---|
| 1843 | uint32_t r, r2;
|
---|
| 1844 | int bt;
|
---|
| 1845 | bt=vtop->type.t & VT_BTYPE;
|
---|
| 1846 | if(bt == VT_INT || bt == VT_SHORT || bt == VT_BYTE) {
|
---|
| 1847 | #ifndef TCC_ARM_VFP
|
---|
| 1848 | uint32_t dsize = 0;
|
---|
| 1849 | #endif
|
---|
| 1850 | r=intr(gv(RC_INT));
|
---|
| 1851 | #ifdef TCC_ARM_VFP
|
---|
| 1852 | r2=vfpr(vtop->r=get_reg(RC_FLOAT));
|
---|
| 1853 | o(0xEE000A10|(r<<12)|(r2<<16)); /* fmsr */
|
---|
| 1854 | r2|=r2<<12;
|
---|
| 1855 | if(!(vtop->type.t & VT_UNSIGNED))
|
---|
| 1856 | r2|=0x80; /* fuitoX -> fsituX */
|
---|
| 1857 | o(0xEEB80A40|r2|T2CPR(t)); /* fYitoX*/
|
---|
| 1858 | #else
|
---|
| 1859 | r2=fpr(vtop->r=get_reg(RC_FLOAT));
|
---|
| 1860 | if((t & VT_BTYPE) != VT_FLOAT)
|
---|
| 1861 | dsize=0x80; /* flts -> fltd */
|
---|
| 1862 | o(0xEE000110|dsize|(r2<<16)|(r<<12)); /* flts */
|
---|
| 1863 | if((vtop->type.t & (VT_UNSIGNED|VT_BTYPE)) == (VT_UNSIGNED|VT_INT)) {
|
---|
| 1864 | uint32_t off = 0;
|
---|
| 1865 | o(0xE3500000|(r<<12)); /* cmp */
|
---|
| 1866 | r=fpr(get_reg(RC_FLOAT));
|
---|
| 1867 | if(last_itod_magic) {
|
---|
| 1868 | off=ind+8-last_itod_magic;
|
---|
| 1869 | off/=4;
|
---|
| 1870 | if(off>255)
|
---|
| 1871 | off=0;
|
---|
| 1872 | }
|
---|
| 1873 | o(0xBD1F0100|(r<<12)|off); /* ldflts */
|
---|
| 1874 | if(!off) {
|
---|
| 1875 | o(0xEA000000); /* b */
|
---|
| 1876 | last_itod_magic=ind;
|
---|
| 1877 | o(0x4F800000); /* 4294967296.0f */
|
---|
| 1878 | }
|
---|
| 1879 | o(0xBE000100|dsize|(r2<<16)|(r2<<12)|r); /* adflt */
|
---|
| 1880 | }
|
---|
| 1881 | #endif
|
---|
| 1882 | return;
|
---|
| 1883 | } else if(bt == VT_LLONG) {
|
---|
| 1884 | int func;
|
---|
| 1885 | CType *func_type = 0;
|
---|
| 1886 | if((t & VT_BTYPE) == VT_FLOAT) {
|
---|
| 1887 | func_type = &func_float_type;
|
---|
| 1888 | if(vtop->type.t & VT_UNSIGNED)
|
---|
| 1889 | func=TOK___floatundisf;
|
---|
| 1890 | else
|
---|
| 1891 | func=TOK___floatdisf;
|
---|
| 1892 | #if LDOUBLE_SIZE != 8
|
---|
| 1893 | } else if((t & VT_BTYPE) == VT_LDOUBLE) {
|
---|
| 1894 | func_type = &func_ldouble_type;
|
---|
| 1895 | if(vtop->type.t & VT_UNSIGNED)
|
---|
| 1896 | func=TOK___floatundixf;
|
---|
| 1897 | else
|
---|
| 1898 | func=TOK___floatdixf;
|
---|
| 1899 | } else if((t & VT_BTYPE) == VT_DOUBLE) {
|
---|
| 1900 | #else
|
---|
| 1901 | } else if((t & VT_BTYPE) == VT_DOUBLE || (t & VT_BTYPE) == VT_LDOUBLE) {
|
---|
| 1902 | #endif
|
---|
| 1903 | func_type = &func_double_type;
|
---|
| 1904 | if(vtop->type.t & VT_UNSIGNED)
|
---|
| 1905 | func=TOK___floatundidf;
|
---|
| 1906 | else
|
---|
| 1907 | func=TOK___floatdidf;
|
---|
| 1908 | }
|
---|
| 1909 | if(func_type) {
|
---|
| 1910 | vpush_global_sym(func_type, func);
|
---|
| 1911 | vswap();
|
---|
| 1912 | gfunc_call(1);
|
---|
| 1913 | vpushi(0);
|
---|
| 1914 | vtop->r=TREG_F0;
|
---|
| 1915 | return;
|
---|
| 1916 | }
|
---|
| 1917 | }
|
---|
| 1918 | tcc_error("unimplemented gen_cvt_itof %x!",vtop->type.t);
|
---|
| 1919 | }
|
---|
| 1920 |
|
---|
| 1921 | /* convert fp to int 't' type */
|
---|
| 1922 | void gen_cvt_ftoi(int t)
|
---|
| 1923 | {
|
---|
| 1924 | uint32_t r, r2;
|
---|
| 1925 | int u, func = 0;
|
---|
| 1926 | u=t&VT_UNSIGNED;
|
---|
| 1927 | t&=VT_BTYPE;
|
---|
| 1928 | r2=vtop->type.t & VT_BTYPE;
|
---|
| 1929 | if(t==VT_INT) {
|
---|
| 1930 | #ifdef TCC_ARM_VFP
|
---|
| 1931 | r=vfpr(gv(RC_FLOAT));
|
---|
| 1932 | u=u?0:0x10000;
|
---|
| 1933 | o(0xEEBC0AC0|(r<<12)|r|T2CPR(r2)|u); /* ftoXizY */
|
---|
| 1934 | r2=intr(vtop->r=get_reg(RC_INT));
|
---|
| 1935 | o(0xEE100A10|(r<<16)|(r2<<12));
|
---|
| 1936 | return;
|
---|
| 1937 | #else
|
---|
| 1938 | if(u) {
|
---|
| 1939 | if(r2 == VT_FLOAT)
|
---|
| 1940 | func=TOK___fixunssfsi;
|
---|
| 1941 | #if LDOUBLE_SIZE != 8
|
---|
| 1942 | else if(r2 == VT_LDOUBLE)
|
---|
| 1943 | func=TOK___fixunsxfsi;
|
---|
| 1944 | else if(r2 == VT_DOUBLE)
|
---|
| 1945 | #else
|
---|
| 1946 | else if(r2 == VT_LDOUBLE || r2 == VT_DOUBLE)
|
---|
| 1947 | #endif
|
---|
| 1948 | func=TOK___fixunsdfsi;
|
---|
| 1949 | } else {
|
---|
| 1950 | r=fpr(gv(RC_FLOAT));
|
---|
| 1951 | r2=intr(vtop->r=get_reg(RC_INT));
|
---|
| 1952 | o(0xEE100170|(r2<<12)|r);
|
---|
| 1953 | return;
|
---|
| 1954 | }
|
---|
| 1955 | #endif
|
---|
| 1956 | } else if(t == VT_LLONG) { // unsigned handled in gen_cvt_ftoi1
|
---|
| 1957 | if(r2 == VT_FLOAT)
|
---|
| 1958 | func=TOK___fixsfdi;
|
---|
| 1959 | #if LDOUBLE_SIZE != 8
|
---|
| 1960 | else if(r2 == VT_LDOUBLE)
|
---|
| 1961 | func=TOK___fixxfdi;
|
---|
| 1962 | else if(r2 == VT_DOUBLE)
|
---|
| 1963 | #else
|
---|
| 1964 | else if(r2 == VT_LDOUBLE || r2 == VT_DOUBLE)
|
---|
| 1965 | #endif
|
---|
| 1966 | func=TOK___fixdfdi;
|
---|
| 1967 | }
|
---|
| 1968 | if(func) {
|
---|
| 1969 | vpush_global_sym(&func_old_type, func);
|
---|
| 1970 | vswap();
|
---|
| 1971 | gfunc_call(1);
|
---|
| 1972 | vpushi(0);
|
---|
| 1973 | if(t == VT_LLONG)
|
---|
| 1974 | vtop->r2 = REG_LRET;
|
---|
| 1975 | vtop->r = REG_IRET;
|
---|
| 1976 | return;
|
---|
| 1977 | }
|
---|
| 1978 | tcc_error("unimplemented gen_cvt_ftoi!");
|
---|
| 1979 | }
|
---|
| 1980 |
|
---|
| 1981 | /* convert from one floating point type to another */
|
---|
| 1982 | void gen_cvt_ftof(int t)
|
---|
| 1983 | {
|
---|
| 1984 | #ifdef TCC_ARM_VFP
|
---|
| 1985 | if(((vtop->type.t & VT_BTYPE) == VT_FLOAT) != ((t & VT_BTYPE) == VT_FLOAT)) {
|
---|
| 1986 | uint32_t r = vfpr(gv(RC_FLOAT));
|
---|
| 1987 | o(0xEEB70AC0|(r<<12)|r|T2CPR(vtop->type.t));
|
---|
| 1988 | }
|
---|
| 1989 | #else
|
---|
| 1990 | /* all we have to do on i386 and FPA ARM is to put the float in a register */
|
---|
| 1991 | gv(RC_FLOAT);
|
---|
| 1992 | #endif
|
---|
| 1993 | }
|
---|
| 1994 |
|
---|
| 1995 | /* computed goto support */
|
---|
| 1996 | void ggoto(void)
|
---|
| 1997 | {
|
---|
| 1998 | gcall_or_jmp(1);
|
---|
| 1999 | vtop--;
|
---|
| 2000 | }
|
---|
| 2001 |
|
---|
| 2002 | /* end of ARM code generator */
|
---|
| 2003 | /*************************************************************/
|
---|
| 2004 | #endif
|
---|
| 2005 | /*************************************************************/
|
---|