diff options
| author | dzwdz | 2021-07-10 17:41:32 +0200 |
|---|---|---|
| committer | dzwdz | 2021-07-10 17:41:32 +0200 |
| commit | 1bf5e324005ce7122a195af106cec656960648dc (patch) | |
| tree | 7a8394a5243ad50d1e8d5574d94908461fe96cc6 /src/platform/sysenter.s | |
| parent | 6cbdc62b5cbe34d7355047722d6d483a4d25c7f3 (diff) | |
a sensible source structure
The idea is that src/kernel/ is only allowed to interface with the
hardware using whatever's defined in src/arch/generic.h. I'll probably
write a small script for checking this later on.
This is a giant commit so I've probably fucked something up. It boots
fine on Bochs and QEMU, so at least there's that.
Diffstat (limited to 'src/platform/sysenter.s')
| -rw-r--r-- | src/platform/sysenter.s | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/src/platform/sysenter.s b/src/platform/sysenter.s deleted file mode 100644 index 270dc08..0000000 --- a/src/platform/sysenter.s +++ /dev/null @@ -1,31 +0,0 @@ -/* kernel/gdt.c */ -.set SEG_r0code, 1 -.set SEG_r3code, 3 -.set SEG_r3data, 4 - -.set IA32_SYSENTER_CS, 0x174 - -.section .text -.global sysexit -.type sysexit, @function -sysexit: - pop %ecx - pop %edx - - mov $(SEG_r3data << 3 | 3), %ax - mov %ax, %ds - mov %ax, %es - mov %ax, %fs - mov %ax, %gs - - sysexit - - -.global sysenter_setup -.type sysenter_setup, @function -sysenter_setup: - xor %edx, %edx - mov $(SEG_r0code << 3), %eax - mov $IA32_SYSENTER_CS, %ecx - wrmsr - ret |