From d1ff7bcc91886626dc9060ec5fb67ee102ab7c1d Mon Sep 17 00:00:00 2001 From: Jon Santmyer Date: Mon, 11 Mar 2024 21:30:31 -0400 Subject: usermode capable kernel with logging syscall --- abi/syscall.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 abi/syscall.h (limited to 'abi/syscall.h') diff --git a/abi/syscall.h b/abi/syscall.h new file mode 100644 index 0000000..95cd4a5 --- /dev/null +++ b/abi/syscall.h @@ -0,0 +1,29 @@ +#ifndef JOVE_ABI_SYSCALL_H +#define JOVE_ABI_SYSCALL_H 1 + +typedef struct syscall { + int id; +} syscall_t; + +struct syscall_log { + syscall_t syscall; + const char *message; +}; + +enum +{ + SYSCALL_LOG = 0, + SYSCALL_COUNT +}; + +#define _SYSCALL(data) __asm__ volatile("movq %0, %%rdi\nsyscall":: "r"(data)) + +void _syscall_log(const char *message) { + struct syscall_log syscall_data = { + .syscall = (syscall_t){ .id = SYSCALL_LOG }, + .message = message + }; + _SYSCALL(&syscall_data); +} + +#endif -- cgit v1.2.1