[BOOT] Huge refactor

2024-10-05 15:39:04 -04:00
parent 6a678794d3
commit 7c3dafc051
18 changed files with 982 additions and 399 deletions
--- a/BOOT/ENVIRON/LIB/X86/ctx.S
+++ b/BOOT/ENVIRON/LIB/X86/ctx.S
@@ -0,0 +1,41 @@
+.text
+
+SetSegmentRegisters:
+    mov 0x18(%rcx), %ds
+    mov 0x1a(%rcx), %es
+    mov 0x1c(%rcx), %fs
+    mov 0x1e(%rcx), %gs
+    mov 0x20(%rcx), %ss
+    ret
+
+.globl Archpx64EnableInterruptsAsm
+Archpx64EnableInterruptsAsm:
+    sti
+    ret
+
+.globl Archpx64DisableInterruptsAsm
+Archpx64DisableInterruptsAsm:
+    cli
+    ret
+
+.globl BlpArchGetDescriptorTableContext
+BlpArchGetDescriptorTableContext:
+    sgdt 0x00(%rcx)
+    sidt 0x0a(%rcx)
+    sldt 0x14(%rcx)
+    mov %cs, 0x16(%rcx)
+    mov %ds, 0x18(%rcx)
+    mov %es, 0x1a(%rcx)
+    mov %fs, 0x1c(%rcx)
+    mov %gs, 0x1e(%rcx)
+    mov %ss, 0x20(%rcx)
+    ret
+
+.globl ArchSetDescriptorTableContext
+ArchSetDescriptorTableContext:
+    sgdt 0x00(%rcx)
+    sidt 0x0a(%rcx)
+    sldt 0x14(%rcx)
+    push 0x16(%rcx)
+    push $SetSegmentRegisters
+    lretq