From bf20ce47a9d5dcad841e4549a68f4ec3db3c57de Mon Sep 17 00:00:00 2001 From: Aleksa Vuckovic Date: Wed, 1 Feb 2023 04:00:48 +0100 Subject: AP -> long mode; testing mutex --- kernel/src/boot/boot.S | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'kernel/src/boot') diff --git a/kernel/src/boot/boot.S b/kernel/src/boot/boot.S index 1833f73..f4cb290 100644 --- a/kernel/src/boot/boot.S +++ b/kernel/src/boot/boot.S @@ -3,10 +3,12 @@ .section .boot32.text, "a" +.set STACK_TOP, 0x03008000 + .global _start _start: cli - mov $stack_top, %esp + mov $STACK_TOP, %esp pushl $0 pushl %eax pushl $0 @@ -37,7 +39,7 @@ setup_page_tables: leal (%edx, %ecx, 8), %edx movl %eax, (%edx) inc %ecx - cmp $1, %ecx + cmp $25, %ecx jne 1b // first 2mb in hh @@ -58,11 +60,12 @@ setup_page_tables: leal (%edx, %ecx, 8), %edx movl %eax, (%edx) inc %ecx - cmp $1, %ecx + cmp $25, %ecx jne 2b ret +.global enable_paging enable_paging: // enable PAE mov %cr4, %edx @@ -104,6 +107,7 @@ gdt_data = . - gdt .byte 0x92 .byte 0xAF .byte 0 +.global gdtp gdtp: .word . - gdt - 1 .quad gdt @@ -122,7 +126,3 @@ pt_lvl2: .skip 4096 pt_lvl2_hh: .skip 4096 - -stack_bottom: - .skip 4096*8 -stack_top: -- cgit v1.2.3