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x86_64: Set vector in iframe/debug state to 99 for syscalls. 

Although syscalls are done through SYSCALL and therefore don't actually
have an interrupt number, set it to 99 (the syscall vector on 32-bit)
in the iframe so that a syscall frame can be identified. Also added
vector/error_code to x86_64_debug_cpu_state for Debugger to use, not
sure why I didn't put them there in the first place.
This commit is contained in:
Alex Smith 2013-07-25 20:04:25 +01:00
parent 143cfee84c
commit 271b27d5a3
3 changed files with 5 additions and 1 deletions
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2
headers/os/arch/x86_64/arch_debugger.h
View File

@ -58,6 +58,8 @@ struct x86_64_debug_cpu_state {
uint64 rcx;
uint64 rbx;
uint64 rax;
uint64 vector;
uint64 error_code;
uint64 rip;
uint64 cs;
uint64 rflags;

2
src/system/kernel/arch/x86/64/interrupts.S
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@ -308,7 +308,7 @@ FUNCTION(x86_64_syscall_entry):
push $USER_CODE_SEG // cs
push %rcx // ip
push $0 // error_code
push $0 // vector
push $99 // vector
PUSH_IFRAME_BOTTOM(IFRAME_TYPE_SYSCALL)
cld

2
src/system/kernel/arch/x86/arch_user_debugger.cpp
View File

@ -90,6 +90,8 @@ get_iframe_registers(const iframe* frame, debug_cpu_state* cpuState)
cpuState->rcx = frame->cx;
cpuState->rbx = frame->bx;
cpuState->rax = frame->ax;
cpuState->vector = frame->vector;
cpuState->error_code = frame->error_code;
cpuState->rip = frame->ip;
cpuState->cs = frame->cs;
cpuState->rflags = frame->flags;