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8c32471e0d
Previously CPU statue was passed on the stack, but the compiler is allowed to clobber values passed to it on the stack in the SysV x86 ABI. So now leave the state on the stack but pass a pointer to it into the ISR functions.
68 lines
1.0 KiB
ArmAsm
68 lines
1.0 KiB
ArmAsm
%include "push_all.inc"
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extern isr_handler
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global isr_handler_prelude
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isr_handler_prelude:
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push_all_and_segments
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mov rdi, rsp
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mov rsi, rsp
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call isr_handler
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mov rsp, rax
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pop_all_and_segments
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add rsp, 16 ; because the ISRs added err/num
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sti
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iretq
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extern irq_handler
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global irq_handler_prelude
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irq_handler_prelude:
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push_all_and_segments
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mov rdi, rsp
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mov rsi, rsp
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call irq_handler
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mov rsp, rax
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pop_all_and_segments
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add rsp, 16 ; because the ISRs added err/num
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sti
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iretq
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%macro EMIT_ISR 2
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global %1
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%1:
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cli
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push 0
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push %2
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jmp isr_handler_prelude
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%endmacro
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%macro EMIT_EISR 2
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global %1
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%1:
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cli
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push %2
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jmp isr_handler_prelude
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%endmacro
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%macro EMIT_IRQ 2
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global %1
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%1:
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cli
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push 0
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push %2
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jmp irq_handler_prelude
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%endmacro
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%define EISR(i, name) EMIT_EISR name, i ; ISR with error code
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%define UISR(i, name) EMIT_ISR name, i ; ISR callable from user space
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%define ISR(i, name) EMIT_ISR name, i
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%define IRQ(i, q, name) EMIT_IRQ name, i
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section .isrs
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%include "interrupt_isrs.inc"
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