diff options
Diffstat (limited to 'gen_arm.c')
| -rw-r--r-- | gen_arm.c | 39 |
1 files changed, 37 insertions, 2 deletions
@@ -76,8 +76,7 @@ void check_alloc_code(code_info *code) size_t size = CODE_ALLOC_SIZE; uint32_t *next_code = alloc_code(&size); if (!next_code) { - fputs("Failed to allocate memory for generated code\n", stderr); - exit(1); + fatal_error("Failed to allocate memory for generated code\n"); } if (next_code = code->last + RESERVE_WORDS) { //new chunk is contiguous with the current one @@ -548,3 +547,39 @@ uint32_t popm_cc(code_info *code, uint32_t reglist, uint32_t cc) *(code->cur++) = cc | POPM | reglist; return CODE_OK; } + +uint32_t load_store_immoff(code_info *code, uint32_t op, uint32_t dst, uint32_t base, int32_t offset, uint32_t cc) +{ + if (offset >= 0x1000 || offset <= -0x1000) { + return INVALID_IMMED; + } + check_alloc_code(code); + uint32_t instruction = cc | op | POST_IND | OFF_IMM | SZ_W | base << 16 | dst << 12; + if (offset >= 0) { + instruction |= offset | DIR_UP; + } else { + instruction |= (-offset) | DIR_DOWN; + } + *(code->cur++) = instruction; + return CODE_OK; +} + +uint32_t ldr_cc(code_info *code, uint32_t dst, uint32_t base, int32_t offset, uint32_t cc) +{ + return load_store_immoff(code, OP_LDR, dst, base, offset, cc); +} + +uint32_t ldr(code_info *code, uint32_t dst, uint32_t base, int32_t offset) +{ + return ldr_cc(code, dst, base, offset, CC_AL); +} + +uint32_t str_cc(code_info *code, uint32_t src, uint32_t base, int32_t offset, uint32_t cc) +{ + return load_store_immoff(code, OP_STR, src, base, offset, cc); +} + +uint32_t str(code_info *code, uint32_t src, uint32_t base, int32_t offset) +{ + return str_cc(code, src, base, offset, CC_AL); +} |