djsundog/circuitpython
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

py/asm: Fix x86 and ARM assemblers due to recent code refactoring.

Browse Source
This commit is contained in:
Damien George 2016-12-09 22:54:45 +11:00
parent 155fdc74d5
commit 93ee6603b1
2 changed files with 10 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
py/asmarm.c
View File

@ -39,7 +39,7 @@
#define SIGNED_FIT24(x) (((x) & 0xff800000) == 0) || (((x) & 0xff000000) == 0xff000000)
void asm_arm_end_pass(asm_arm_t *as) {
if (as->pass == ASM_ARM_PASS_EMIT) {
if (as->base.pass == ASM_ARM_PASS_EMIT) {
#ifdef __arm__
// flush I- and D-cache
asm volatile(
@ -333,9 +333,9 @@ void asm_arm_strb_reg_reg_reg(asm_arm_t *as, uint rd, uint rm, uint rn) {
}
void asm_arm_bcc_label(asm_arm_t *as, int cond, uint label) {
assert(label < as->max_num_labels);
mp_uint_t dest = as->label_offsets[label];
mp_int_t rel = dest - as->code_offset;
assert(label < as->base.max_num_labels);
mp_uint_t dest = as->base.label_offsets[label];
mp_int_t rel = dest - as->base.code_offset;
rel -= 8; // account for instruction prefetch, PC is 8 bytes ahead of this instruction
rel >>= 2; // in ARM mode the branch target is 32-bit aligned, so the 2 LSB are omitted

12
py/asmx86.c
View File

@ -232,7 +232,7 @@ void asm_x86_mov_i32_to_r32(asm_x86_t *as, int32_t src_i32, int dest_r32) {
// src_i32 is stored as a full word in the code, and aligned to machine-word boundary
void asm_x86_mov_i32_to_r32_aligned(asm_x86_t *as, int32_t src_i32, int dest_r32) {
// mov instruction uses 1 byte for the instruction, before the i32
while (((as->code_offset + 1) & (WORD_SIZE - 1)) != 0) {
while (((as->base.code_offset + 1) & (WORD_SIZE - 1)) != 0) {
asm_x86_nop(as);
}
asm_x86_mov_i32_to_r32(as, src_i32, dest_r32);
@ -339,13 +339,13 @@ void asm_x86_setcc_r8(asm_x86_t *as, mp_uint_t jcc_type, int dest_r8) {
}
STATIC mp_uint_t get_label_dest(asm_x86_t *as, mp_uint_t label) {
assert(label < as->max_num_labels);
return as->label_offsets[label];
assert(label < as->base.max_num_labels);
return as->base.label_offsets[label];
}
void asm_x86_jmp_label(asm_x86_t *as, mp_uint_t label) {
mp_uint_t dest = get_label_dest(as, label);
mp_int_t rel = dest - as->code_offset;
mp_int_t rel = dest - as->base.code_offset;
if (dest != (mp_uint_t)-1 && rel < 0) {
// is a backwards jump, so we know the size of the jump on the first pass
// calculate rel assuming 8 bit relative jump
@ -367,7 +367,7 @@ void asm_x86_jmp_label(asm_x86_t *as, mp_uint_t label) {
void asm_x86_jcc_label(asm_x86_t *as, mp_uint_t jcc_type, mp_uint_t label) {
mp_uint_t dest = get_label_dest(as, label);
mp_int_t rel = dest - as->code_offset;
mp_int_t rel = dest - as->base.code_offset;
if (dest != (mp_uint_t)-1 && rel < 0) {
// is a backwards jump, so we know the size of the jump on the first pass
// calculate rel assuming 8 bit relative jump
@ -499,7 +499,7 @@ void asm_x86_call_ind(asm_x86_t *as, void *ptr, mp_uint_t n_args, int temp_r32)
// this reduces code size by 2 bytes per call, but doesn't seem to speed it up at all
/*
asm_x86_write_byte_1(as, OPCODE_CALL_REL32);
asm_x86_write_word32(as, ptr - (void*)(as->code_base + as->code_offset + 4));
asm_x86_write_word32(as, ptr - (void*)(as->code_base + as->base.code_offset + 4));
*/
// the caller must clean up the stack