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py/asmarm: Allow function state to be larger than 255.

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Co-authored-by: Alessandro Gatti <a.gatti@frob.it>
Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George 2025-01-02 13:31:18 +11:00
parent 6a90e513de
commit 510e055c71
1 changed files with 12 additions and 2 deletions
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14
py/asmarm.c
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@ -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)));