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py: Add 'align' and 'data' meta-instructions to inline assembler.

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Damien George
2014-04-21 13:33:15 +01:00
parent 764af4b7c5
commit e5f8a77db6
6 changed files with 59 additions and 1 deletions
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14
py/asmthumb.c
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@@ -209,6 +209,20 @@ void asm_thumb_label_assign(asm_thumb_t *as, uint label) {
}
}
void asm_thumb_align(asm_thumb_t* as, uint align) {
// TODO fill unused data with NOPs?
as->code_offset = (as->code_offset + align - 1) & (~(align - 1));
}
void asm_thumb_data(asm_thumb_t* as, uint bytesize, uint val) {
byte *c = asm_thumb_get_cur_to_write_bytes(as, bytesize);
// little endian
for (uint i = 0; i < bytesize; i++) {
*c++ = val;
val >>= 8;
}
}
STATIC int get_label_dest(asm_thumb_t *as, uint label) {
assert(label < as->max_num_labels);
return as->label_offsets[label];