diff options
Diffstat (limited to 'py/asmarm.c')
| -rw-r--r-- | py/asmarm.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/py/asmarm.c b/py/asmarm.c index 6fa751b32..d30456788 100644 --- a/py/asmarm.c +++ b/py/asmarm.c @@ -343,6 +343,12 @@ void asm_arm_ldrh_reg_reg(asm_arm_t *as, uint rd, uint rn) { emit_al(as, 0x1d000b0 | (rn << 16) | (rd << 12)); } +void asm_arm_ldrh_reg_reg_reg(asm_arm_t *as, uint rd, uint rm, uint rn) { + // ldrh doesn't support scaled register index + emit_al(as, 0x1a00080 | (ASM_ARM_REG_R8 << 12) | rn); // mov r8, rn, lsl #1 + emit_al(as, 0x19000b0 | (rm << 16) | (rd << 12) | ASM_ARM_REG_R8); // ldrh rd, [rm, r8]; +} + void asm_arm_ldrh_reg_reg_offset(asm_arm_t *as, uint rd, uint rn, uint byte_offset) { if (byte_offset < 0x100) { // ldrh rd, [rn, #off] @@ -360,6 +366,16 @@ void asm_arm_ldrb_reg_reg(asm_arm_t *as, uint rd, uint rn) { emit_al(as, 0x5d00000 | (rn << 16) | (rd << 12)); } +void asm_arm_ldrb_reg_reg_reg(asm_arm_t *as, uint rd, uint rm, uint rn) { + // ldrb rd, [rm, rn] + emit_al(as, 0x7d00000 | (rm << 16) | (rd << 12) | rn); +} + +void asm_arm_ldr_reg_reg_reg(asm_arm_t *as, uint rd, uint rm, uint rn) { + // ldr rd, [rm, rn, lsl #2] + emit_al(as, 0x7900100 | (rm << 16) | (rd << 12) | rn); +} + void asm_arm_str_reg_reg(asm_arm_t *as, uint rd, uint rm, uint byte_offset) { // str rd, [rm, #off] emit_al(as, 0x5800000 | (rm << 16) | (rd << 12) | byte_offset); |