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Simplify task switches

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No longer using the rsp from the entry to the kernel, but instead
switching rsp at task-switching time in assembly.

This currently breaks fork()
This commit is contained in:
Justin C. Miller
2019-03-31 22:49:24 -07:00
parent 5cdbedd4d1
commit ca2362f858
21 changed files with 311 additions and 178 deletions
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2
src/kernel/interrupts.s
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@@ -9,7 +9,6 @@ isr_handler_prelude:
mov rdi, rsp
mov rsi, rsp
call isr_handler
mov rsp, rax
jmp isr_handler_return
extern irq_handler
@@ -21,7 +20,6 @@ irq_handler_prelude:
mov rdi, rsp
mov rsi, rsp
call irq_handler
mov rsp, rax
; fall through to isr_handler_return
global isr_handler_return