49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
// SPDX-License-Identifier: MIT
|
|
|
|
#include <zinnia/status.h>
|
|
#include <kernel/alloc.h>
|
|
#include <kernel/clock.h>
|
|
#include <kernel/console.h>
|
|
#include <kernel/syscalls.h>
|
|
#include <kernel/usercopy.h>
|
|
|
|
zn_status_t syscall_log(struct arch_context* ctx) {
|
|
__user const char* msg = (__user const char*)ctx->ARCH_CTX_A0;
|
|
size_t len = ctx->ARCH_CTX_A1;
|
|
|
|
char* buf = mem_alloc(len, ALLOC_NOZERO);
|
|
if (!buf) {
|
|
return ZN_ERR_NO_MEMORY;
|
|
}
|
|
|
|
if (usercopy_read(buf, msg, len)) {
|
|
console_write(buf, len);
|
|
|
|
mem_free(buf);
|
|
return ZN_OK;
|
|
}
|
|
|
|
mem_free(buf);
|
|
return ZN_ERR_BAD_BUFFER;
|
|
}
|
|
|
|
zn_status_t syscall_page_size(struct arch_context* ctx) {
|
|
__user size_t* out = (__user size_t*)ctx->ARCH_CTX_A0;
|
|
|
|
size_t size = arch_mem_page_size();
|
|
if (!usercopy_write(out, &size, sizeof(size)))
|
|
return ZN_ERR_BAD_BUFFER;
|
|
|
|
return ZN_OK;
|
|
}
|
|
|
|
zn_status_t syscall_time(struct arch_context* ctx) {
|
|
__user uint64_t* out = (__user uint64_t*)ctx->ARCH_CTX_A0;
|
|
|
|
uint64_t time = clock_get_elapsed_ns();
|
|
if (!usercopy_write(out, &time, sizeof(time)))
|
|
return ZN_ERR_BAD_BUFFER;
|
|
|
|
return ZN_OK;
|
|
}
|