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| author | Tianhao Wang <shrik3@mailbox.org> | 2024-06-04 19:53:54 +0200 |
|---|---|---|
| committer | Tianhao Wang <shrik3@mailbox.org> | 2024-06-11 15:17:12 +0200 |
| commit | 1cb3c007fb5bcd74f39e735bd531c17d6fbcd575 (patch) | |
| tree | 8a4f8c1a7bd4888bbd2985586c0a18f586718564 | |
| parent | 23ec0f61a7a115753148e3688e81567867f65c70 (diff) | |
idt: mm: move idt and vectors also to upper memory
| -rw-r--r-- | src/arch/x86_64/asm/vectors.s | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/src/arch/x86_64/asm/vectors.s b/src/arch/x86_64/asm/vectors.s index 4267369..80ec612 100644 --- a/src/arch/x86_64/asm/vectors.s +++ b/src/arch/x86_64/asm/vectors.s @@ -6,14 +6,14 @@ [GLOBAL vectors_start] [EXTERN interrupt_gate] -[SECTION .reserved_0.idt] +[SECTION .data.idt] ; Interrupt descriptor table with 256 entries ; TODO: use a interrupt stack instead of the current stack. idt: ; reserve space for 256x idt entries (16 bytes each) resb 16 * 256 -[SECTION .data32] +[SECTION .data.idt_descr] idt_descr: dw 256*8 - 1 ; 256 entries dq idt @@ -22,13 +22,14 @@ idt_descr: ; bytes. DO NOT modify the wrapper, instead change the wrapper_body if needed. ; if the vector has to be modified into more than 16 bytes, ; arch::x86_64:: interrupt::_idt_init() must be modified accordingly -[SECTION .data32.vectors] +[SECTION .text.vectors] %macro vector 1 align 16 vector_%1: push rbp mov rbp, rsp push rax + push rbx mov al, %1 jmp vector_body %endmacro @@ -60,7 +61,9 @@ vector_body: and rax, 0xff ; call the interrupt handling code with interrupt number as parameter mov rdi, rax - call interrupt_gate + mov rbx, interrupt_gate + ; TODO fix the long jump. I don't want to waste another register + call rbx ; restore volatile registers pop r11 @@ -73,6 +76,7 @@ vector_body: pop rcx ; ... also those from the vector wrapper + pop rbx pop rax pop rbp |