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Added ldr and str instructions to gen_arm

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Michael Pavone committed 2015-01-07 22:42:35 -08:00
1 parent f0a88e3789
commit f1ad0a3e37
2 files changed
+40
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gen_arm.c
+36
View File
@@ -548,3 +548,39 @@ 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);
}
gen_arm.h
+4
View File
@@ -149,5 +149,9 @@ uint32_t pop(code_info *code, uint32_t reg);
uint32_t pop_cc(code_info *code, uint32_t reg, uint32_t cc);
uint32_t popm(code_info *code, uint32_t reglist);
uint32_t popm_cc(code_info *code, uint32_t reglist, uint32_t cc);
uint32_t ldr_cc(code_info *code, uint32_t dst, uint32_t base, int32_t offset, uint32_t cc);
uint32_t ldr(code_info *code, uint32_t rst, uint32_t base, int32_t offset);
uint32_t str_cc(code_info *code, uint32_t src, uint32_t base, int32_t offset, uint32_t cc);
uint32_t str(code_info *code, uint32_t src, uint32_t base, int32_t offset);
#endif //GEN_ARM_H_