diff options
| author | Danny Holman <dholman@gymli.org> | 2024-02-16 12:50:50 -0600 |
|---|---|---|
| committer | Danny Holman <dholman@gymli.org> | 2024-02-16 12:50:50 -0600 |
| commit | d0b2495636d042a1f301fd2d0d68d7f782275cd4 (patch) | |
| tree | 20bda56ea19c5a0b6a245ed2e68bc70827c596d7 | |
| parent | 4dd7abb188a1587bc2086409e0445ef11e834feb (diff) | |
arch: i386: syscall.c: add functions that dump data
Add functions to the syscall handlers that dump registers and stack in
case of catastrophic failure.
Signed-off-by: Danny Holman <dholman@gymli.org>
| -rw-r--r-- | arch/i386/include/kernel/syscall.h | 2 | ||||
| -rw-r--r-- | arch/i386/kernel/syscall.c | 8 |
2 files changed, 9 insertions, 1 deletions
diff --git a/arch/i386/include/kernel/syscall.h b/arch/i386/include/kernel/syscall.h index fdd6520..788e5da 100644 --- a/arch/i386/include/kernel/syscall.h +++ b/arch/i386/include/kernel/syscall.h @@ -2,6 +2,7 @@ #define I386_SYSCALL_H #include <kernel/isr.h> +#include <stddef.h> // Unix standard calls #define SYS_FORK 1 @@ -27,5 +28,6 @@ int handle_syscall(struct isr_frame *frame); void dump_reg(struct isr_frame *frame); +void dump_stack(uintptr_t esp, size_t len); #endif diff --git a/arch/i386/kernel/syscall.c b/arch/i386/kernel/syscall.c index 593bb64..7bdb24b 100644 --- a/arch/i386/kernel/syscall.c +++ b/arch/i386/kernel/syscall.c @@ -9,6 +9,7 @@ int handle_syscall(struct isr_frame *frame) { break; default: kprintf("Error: Invalid system call number: %d\n", frame->eax); + halt_catch_fire(frame); } return 0; } @@ -22,5 +23,10 @@ void dump_reg(struct isr_frame *frame) { kprintf("\tESI = %x\n", frame->esi); kprintf("\tEDI = %x\n", frame->edi); kprintf("\tEIP = %x\n", frame->eip); - kprintf("Current code selector: %d\n", frame->cs); + kprintf("Current code selector: %x\n", frame->cs); +} + +void dump_stack(uint32_t esp, size_t len) { + for (uint32_t i = 0; i < len; i++) + kprintf("%x:\t%x\n", esp+i, *(uint32_t*)(esp+i)); } |