mirror of
https://github.com/MariaDB/server.git
synced 2025-01-31 19:11:46 +01:00
106 lines
2.1 KiB
ArmAsm
106 lines
2.1 KiB
ArmAsm
#include <sys.s>
|
|
#include <sys/regdef.h>
|
|
|
|
/*
|
|
Kernel syscall interface:
|
|
Input:
|
|
v0 syscall number
|
|
Output:
|
|
|
|
This macro is similar to SYSCALL in sys/syscall.h, but not completely.
|
|
There's room for optimization, if we assume this will continue to
|
|
be assembled as one file.
|
|
|
|
Compile with -DPIC for pic code.
|
|
*/
|
|
|
|
#ifdef PIC
|
|
#define PICOPT .option pic2
|
|
#else
|
|
#define PICOPT
|
|
#endif
|
|
|
|
|
|
#define YSYSCALL(x) \
|
|
PICOPT; \
|
|
.globl machdep_sys_##x; \
|
|
.ent machdep_sys_##x, 0; \
|
|
machdep_sys_##x:; \
|
|
.frame sp,0,ra; \
|
|
.set noreorder; \
|
|
li v0, SYS_##x; \
|
|
syscall; \
|
|
bne a3, zero, 1b; \
|
|
nop; \
|
|
j ra; \
|
|
nop; \
|
|
.end machdep_sys_##x
|
|
|
|
/* ==========================================================================
|
|
* error code for all syscalls. The error value is returned as the negative
|
|
* of the errno value.
|
|
*/
|
|
|
|
1:
|
|
subu v0,zero,v0;
|
|
j ra;
|
|
|
|
/* ==========================================================================
|
|
* lstat
|
|
*/
|
|
PICOPT;
|
|
.globl machdep_sys_lstat;
|
|
.ent machdep_sys_lstat, 0;
|
|
machdep_sys_lstat:;
|
|
.frame sp,0,ra;
|
|
.set noreorder;
|
|
move a2, a1
|
|
move a1, a0
|
|
li a0, 2
|
|
li v0, SYS_lxstat;
|
|
syscall;
|
|
bne a3, zero, 1b;
|
|
nop;
|
|
j ra;
|
|
nop;
|
|
.end machdep_sys_lstat
|
|
|
|
/* ==========================================================================
|
|
* fstat
|
|
*/
|
|
PICOPT;
|
|
.globl machdep_sys_fstat;
|
|
.ent machdep_sys_fstat, 0;
|
|
machdep_sys_fstat:;
|
|
.frame sp,0,ra;
|
|
.set noreorder;
|
|
move a2, a1
|
|
move a1, a0
|
|
li a0, 2
|
|
li v0, SYS_fxstat;
|
|
syscall;
|
|
bne a3, zero, 1b;
|
|
nop;
|
|
j ra;
|
|
nop;
|
|
.end machdep_sys_fstat
|
|
|
|
/* ==========================================================================
|
|
* stat
|
|
*/
|
|
PICOPT;
|
|
.globl machdep_sys_stat;
|
|
.ent machdep_sys_stat, 0;
|
|
machdep_sys_stat:;
|
|
.frame sp,0,ra;
|
|
.set noreorder;
|
|
move a2, a1
|
|
move a1, a0
|
|
li a0, 2
|
|
li v0, SYS_xstat;
|
|
syscall;
|
|
bne a3, zero, 1b;
|
|
nop;
|
|
j ra;
|
|
nop;
|
|
.end machdep_sys_stat
|