mirrors
/
micropython
mirror of https://github.com/micropython/micropython.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

py: In inline assembler, fix branch out-of-range error reporting. 

Should only give an error on the last pass of the assembler, since
that's when we are certain about the branch size.
This commit is contained in:
Damien George 2015-03-02 17:51:32 +00:00
parent 24ffb8e876
commit 67c5f89af5
1 changed files with 6 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
py/asmthumb.c
View File

@ -297,12 +297,8 @@ bool asm_thumb_b_n_label(asm_thumb_t *as, uint label) {
mp_uint_t dest = get_label_dest(as, label);
mp_int_t rel = dest - as->code_offset;
rel -= 4; // account for instruction prefetch, PC is 4 bytes ahead of this instruction
if (SIGNED_FIT12(rel)) {
asm_thumb_op16(as, OP_B_N(rel));
return true;
} else {
return false;
}
asm_thumb_op16(as, OP_B_N(rel));
return as->pass != ASM_THUMB_PASS_EMIT || SIGNED_FIT12(rel);
}
#define OP_BCC_N(cond, byte_offset) (0xd000 | ((cond) << 8) | (((byte_offset) >> 1) & 0x00ff))
@ -316,12 +312,8 @@ bool asm_thumb_bcc_nw_label(asm_thumb_t *as, int cond, uint label, bool wide) {
mp_int_t rel = dest - as->code_offset;
rel -= 4; // account for instruction prefetch, PC is 4 bytes ahead of this instruction
if (!wide) {
if (SIGNED_FIT9(rel)) {
asm_thumb_op16(as, OP_BCC_N(cond, rel));
return true;
} else {
return false;
}
asm_thumb_op16(as, OP_BCC_N(cond, rel));
return as->pass != ASM_THUMB_PASS_EMIT || SIGNED_FIT9(rel);
} else {
asm_thumb_op32(as, OP_BCC_W_HI(cond, rel), OP_BCC_W_LO(rel));
return true;
@ -335,12 +327,8 @@ bool asm_thumb_bl_label(asm_thumb_t *as, uint label) {
mp_uint_t dest = get_label_dest(as, label);
mp_int_t rel = dest - as->code_offset;
rel -= 4; // account for instruction prefetch, PC is 4 bytes ahead of this instruction
if (SIGNED_FIT23(rel)) {
asm_thumb_op32(as, OP_BL_HI(rel), OP_BL_LO(rel));
return true;
} else {
return false;
}
asm_thumb_op32(as, OP_BL_HI(rel), OP_BL_LO(rel));
return as->pass != ASM_THUMB_PASS_EMIT || SIGNED_FIT23(rel);
}
void asm_thumb_mov_reg_i32(asm_thumb_t *as, uint reg_dest, mp_uint_t i32) {