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Kernel: Add custom stack to double fault handler

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This prevents triple faults!
This commit is contained in:
Bananymous
2025-07-02 23:13:17 +03:00
parent 6084aae603
commit 8da4f80453
5 changed files with 20 additions and 11 deletions
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10
kernel/arch/i686/boot.S
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@@ -59,10 +59,10 @@ bananboot_start:
bananboot_end:
.section .bss, "aw", @nobits
.align 4096
boot_stack_bottom:
.global g_boot_stack_top
g_boot_stack_bottom:
.skip 4096 * 4
boot_stack_top:
g_boot_stack_top:
.global g_kernel_cmdline
g_kernel_cmdline:
@@ -194,7 +194,7 @@ _start:
movl %ebx, V2P(bootloader_info)
# load boot stack
movl $V2P(boot_stack_top), %esp
movl $V2P(g_boot_stack_top), %esp
# load boot GDT
lgdt V2P(boot_gdtr)
@@ -212,7 +212,7 @@ gdt_flush:
call initialize_paging
# load higher half stack pointer
movl $boot_stack_top, %esp
movl $g_boot_stack_top, %esp
# jump to higher half
leal higher_half, %ecx