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baremetal aarch64: create C version of multicore.S as well

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Attempted to do the same for arm, but it failed.
This commit is contained in:
Ciro Santilli 六四事件 法轮功
2019-08-21 00:00:00 +00:00
parent 6f88fa17bc
commit f28191a735
21 changed files with 336 additions and 89 deletions
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48
baremetal/lib/syscalls.c
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@@ -3,14 +3,6 @@
#include <sys/stat.h>
#include <lkmc.h>
#include <lkmc/m5ops.h>
void lkmc_baremetal_on_exit_callback(int status, void *arg) {
(void)arg;
if (status != 0) {
printf("lkmc_exit_status_%d\n", status);
}
}
enum {
UART_FR_RXFE = 0x10,
@@ -19,44 +11,18 @@ enum {
#define UART_DR(baseaddr) (*(unsigned int *)(baseaddr))
#define UART_FR(baseaddr) (*(((unsigned int *)(baseaddr))+6))
void lkmc_baremetal_on_exit_callback(int status, void *arg) {
(void)arg;
if (status != 0) {
printf("lkmc_exit_status_%d\n", status);
}
}
int _close(int file) {
LKMC_UNUSED(file);
return -1;
}
void _exit(int status) {
LKMC_UNUSED(status);
#if LKMC_GEM5
LKMC_M5OPS_EXIT;
#else
#if defined(__arm__)
__asm__ __volatile__ (
"mov r0, #0x18\n"
"ldr r1, =#0x20026\n"
"svc 0x00123456\n"
:
:
: "r0", "r1"
);
#elif defined(__aarch64__)
/* TODO actually use the exit value here, just for fun. */
__asm__ __volatile__ (
"mov x1, #0x26\n" \
"movk x1, #2, lsl #16\n" \
"str x1, [sp,#0]\n" \
"mov x0, #0\n" \
"str x0, [sp,#8]\n" \
"mov x1, sp\n" \
"mov w0, #0x18\n" \
"hlt 0xf000\n"
:
:
: "x0", "x1"
);
#endif
#endif
}
int _fstat(int file, struct stat *st) {
LKMC_UNUSED(file);
st->st_mode = S_IFCHR;