diff options
| author | Damien George <damien@micropython.org> | 2025-01-02 13:31:18 +1100 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2025-01-06 17:55:11 +1100 |
| commit | 510e055c71afd60be1aaae4594ec8f97cf8b9fa9 (patch) | |
| tree | b397b8824cdf1f92298d0e73d8aab4d128c8a9ee /py/asmarm.c | |
| parent | 6a90e513dea2267372d8e94f1b83f9260141907d (diff) | |
py/asmarm: Allow function state to be larger than 255.
Co-authored-by: Alessandro Gatti <a.gatti@frob.it>
Signed-off-by: Damien George <damien@micropython.org>
Diffstat (limited to 'py/asmarm.c')
| -rw-r--r-- | py/asmarm.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/py/asmarm.c b/py/asmarm.c index 634f2db4f..b20bdebde 100644 --- a/py/asmarm.c +++ b/py/asmarm.c @@ -168,13 +168,23 @@ void asm_arm_entry(asm_arm_t *as, int num_locals) { emit_al(as, asm_arm_op_push(as->push_reglist | 1 << ASM_ARM_REG_LR)); if (as->stack_adjust > 0) { - emit_al(as, asm_arm_op_sub_imm(ASM_ARM_REG_SP, ASM_ARM_REG_SP, as->stack_adjust)); + if (as->stack_adjust < 0x100) { + emit_al(as, asm_arm_op_sub_imm(ASM_ARM_REG_SP, ASM_ARM_REG_SP, as->stack_adjust)); + } else { + asm_arm_mov_reg_i32_optimised(as, ASM_ARM_REG_R8, as->stack_adjust); + emit_al(as, asm_arm_op_sub_reg(ASM_ARM_REG_SP, ASM_ARM_REG_SP, ASM_ARM_REG_R8)); + } } } void asm_arm_exit(asm_arm_t *as) { if (as->stack_adjust > 0) { - emit_al(as, asm_arm_op_add_imm(ASM_ARM_REG_SP, ASM_ARM_REG_SP, as->stack_adjust)); + if (as->stack_adjust < 0x100) { + emit_al(as, asm_arm_op_add_imm(ASM_ARM_REG_SP, ASM_ARM_REG_SP, as->stack_adjust)); + } else { + asm_arm_mov_reg_i32_optimised(as, ASM_ARM_REG_R8, as->stack_adjust); + emit_al(as, asm_arm_op_add_reg(ASM_ARM_REG_SP, ASM_ARM_REG_SP, ASM_ARM_REG_R8)); + } } emit_al(as, asm_arm_op_pop(as->push_reglist | (1 << ASM_ARM_REG_PC))); |