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Preserve registers and align stack in interrupt handlers

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Josh Holtrop 2023-11-02 10:29:27 -04:00
parent 2fa4193517
commit 5d8343ed40
1 changed files with 22 additions and 7 deletions
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29
src/hulk/idt.d
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@ -83,19 +83,34 @@ struct Idt
movabs $$1f, %rax movabs $$1f, %rax
jmp 2f jmp 2f
1: 1:
pushq %rdi
pushq %rsi
pushq %rax pushq %rax
pushq %rcx
pushq %rdx pushq %rdx
pushq %rsi
pushq %rdi
pushq %r8
pushq %r9
pushq %r10
pushq %r11
pushq %rbp
mov %rsp, %rbp
and $$0xFFFFFFFFFFFFFFF0, %rsp
mov $$", isr, ", %rdi mov $$", isr, ", %rdi
" ~ (isr_has_error_code(isr) ? "mov 0x20(%rsp), %rsi" : "") ~ " " ~ (isr_has_error_code(isr) ? "mov 0x50(%rbp), %rsi" : "") ~ "
" ~ (isr_has_error_code(isr) ? "lea 0x28(%rsp), %rdx" : "lea 0x20(%rsp), %rdx") ~ " " ~ (isr_has_error_code(isr) ? "lea 0x58(%rbp), %rdx" : "lea 0x50(%rbp), %rdx") ~ "
movabs $$isr, %rax movabs $$isr, %rax
callq *%rax callq *%rax
popq %rdx mov %rbp, %rsp
popq %rax popq %rbp
popq %rsi popq %r11
popq %r10
popq %r9
popq %r8
popq %rdi popq %rdi
popq %rsi
popq %rdx
popq %rcx
popq %rax
" ~ (isr_has_error_code(isr) ? "add $$8, %rsp" : "") ~ " " ~ (isr_has_error_code(isr) ? "add $$8, %rsp" : "") ~ "
iretq iretq
2:`, `={rax}`);"); 2:`, `={rax}`);");