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-rw-r--r--libc/sysdeps/linux/nios2/bits/syscalls.h359
1 files changed, 85 insertions, 274 deletions
diff --git a/libc/sysdeps/linux/nios2/bits/syscalls.h b/libc/sysdeps/linux/nios2/bits/syscalls.h
index ec5370712..f80bea206 100644
--- a/libc/sysdeps/linux/nios2/bits/syscalls.h
+++ b/libc/sysdeps/linux/nios2/bits/syscalls.h
@@ -9,287 +9,98 @@
#include <errno.h>
#include <asm/traps.h>
-#define __syscall_return(type, res) \
-do { \
- if ((unsigned long)(res) >= (unsigned long)(-125)) { \
- \
- /* avoid using res which is declared to be in \
- register r2; errno might expand to a function \
- call and clobber it. */ \
- \
- int __err = -(res); \
- errno = __err; \
- res = -1; \
- } \
- return (type) (res); \
-} while (0)
+#define __syscall_return(type, res) \
+ do { \
+ if (unlikely(INTERNAL_SYSCALL_ERROR_P(res, ))) { \
+ __set_errno(INTERNAL_SYSCALL_ERRNO(res, )); \
+ res = (unsigned long) -1; \
+ } \
+ return (type) (res); \
+ } while (0)
-#define _syscall0(type,name) \
-type name(void) \
-{ \
- long __res; \
- \
- __asm__ __volatile__ ( \
- \
- " \n\t" \
- \
- " movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
- " movi r3, %1\n\t" /* __NR_##name */ \
- \
- " trap\n\t" \
- " mov %0, r2\n\t" /* syscall rtn */ \
- \
- " \n\t" \
- \
- : "=r" (__res) /* %0 */ \
- \
- : "i" (__NR_##name) /* %1 */ \
- , "i" (TRAP_ID_SYSCALL) /* %2 */ \
- \
- : "r2" /* Clobbered */ \
- , "r3" /* Clobbered */ \
- ); \
- \
-__syscall_return(type,__res); \
-}
+#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
+ ({ \
+ long __res; \
+ __asm__ __volatile__ ( \
+ "movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
+ "movi r3, %1\n\t" /* __NR_##name */ \
+ ASM_ARGS_##nr \
+ "trap\n\t" \
+ "mov %0, r2\n\t" /* syscall return */ \
+ : "=r" (__res) /* %0 */ \
+ : "i" (name) /* %1 */ \
+ , "i" (TRAP_ID_SYSCALL) /* %2 */ \
+ MAP_ARGS_##nr (args) /* %3-%8 */ \
+ : "r2" \
+ , "r3" \
+ CLOB_ARGS_##nr /* Clobbered */ \
+ ); \
+ __res; \
+ })
-#define _syscall1(type,name,atype,a) \
-type name(atype a) \
-{ \
- long __res; \
- \
- __asm__ __volatile__ ( \
- \
- " \n\t" \
- \
- " movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
- " movi r3, %1\n\t" /* __NR_##name */ \
- " mov r4, %3\n\t" /* (long) a */ \
- \
- " trap\n\t" \
- " mov %0, r2\n\t" /* syscall rtn */ \
- \
- " \n\t" \
- \
- : "=r" (__res) /* %0 */ \
- \
- : "i" (__NR_##name) /* %1 */ \
- , "i" (TRAP_ID_SYSCALL) /* %2 */ \
- , "r" ((long) a) /* %3 */ \
- \
- : "r2" /* Clobbered */ \
- , "r3" /* Clobbered */ \
- , "r4" /* Clobbered */ \
- ); \
- \
-__syscall_return(type,__res); \
-}
+#define INTERNAL_SYSCALL_ERROR_P(val, err) \
+ ((unsigned long)(val) >= (unsigned long)(-125))
-#define _syscall2(type,name,atype,a,btype,b) \
-type name(atype a,btype b) \
-{ \
- long __res; \
- \
- __asm__ __volatile__ ( \
- \
- " \n\t" \
- \
- " movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
- " movi r3, %1\n\t" /* __NR_##name */ \
- " mov r4, %3\n\t" /* (long) a */ \
- " mov r5, %4\n\t" /* (long) b */ \
- \
- " trap\n\t" \
- " mov %0, r2\n\t" /* syscall rtn */ \
- \
- " \n\t" \
- \
- : "=r" (__res) /* %0 */ \
- \
- : "i" (__NR_##name) /* %1 */ \
- , "i" (TRAP_ID_SYSCALL) /* %2 */ \
- , "r" ((long) a) /* %3 */ \
- , "r" ((long) b) /* %4 */ \
- \
- : "r2" /* Clobbered */ \
- , "r3" /* Clobbered */ \
- , "r4" /* Clobbered */ \
- , "r5" /* Clobbered */ \
- ); \
- \
-__syscall_return(type,__res); \
-}
+#define ASM_ARGS_0
+#define MAP_ARGS_0()
+#define CLOB_ARGS_0
-#define _syscall3(type,name,atype,a,btype,b,ctype,c) \
-type name(atype a,btype b,ctype c) \
-{ \
- long __res; \
- \
- __asm__ __volatile__ ( \
- \
- " \n\t" \
- \
- " movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
- " movi r3, %1\n\t" /* __NR_##name */ \
- " mov r4, %3\n\t" /* (long) a */ \
- " mov r5, %4\n\t" /* (long) b */ \
- " mov r6, %5\n\t" /* (long) c */ \
- \
- " trap\n\t" \
- " mov %0, r2\n\t" /* syscall rtn */ \
- \
- " \n\t" \
- \
- : "=r" (__res) /* %0 */ \
- \
- : "i" (__NR_##name) /* %1 */ \
- , "i" (TRAP_ID_SYSCALL) /* %2 */ \
- , "r" ((long) a) /* %3 */ \
- , "r" ((long) b) /* %4 */ \
- , "r" ((long) c) /* %5 */ \
- \
- : "r2" /* Clobbered */ \
- , "r3" /* Clobbered */ \
- , "r4" /* Clobbered */ \
- , "r5" /* Clobbered */ \
- , "r6" /* Clobbered */ \
- ); \
- \
-__syscall_return(type,__res); \
-}
+#define ASM_ARGS_1 \
+ "mov r4, %3\n\t"
+#define MAP_ARGS_1(a) \
+ , "r" ((long) a)
+#define CLOB_ARGS_1 \
+ , "r4"
-#define _syscall4(type,name,atype,a,btype,b,ctype,c,dtype,d) \
-type name (atype a, btype b, ctype c, dtype d) \
-{ \
- long __res; \
- \
- __asm__ __volatile__ ( \
- \
- " \n\t" \
- \
- " movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
- " movi r3, %1\n\t" /* __NR_##name */ \
- " mov r4, %3\n\t" /* (long) a */ \
- " mov r5, %4\n\t" /* (long) b */ \
- " mov r6, %5\n\t" /* (long) c */ \
- " mov r7, %6\n\t" /* (long) d */ \
- \
- " trap\n\t" \
- " mov %0, r2\n\t" /* syscall rtn */ \
- \
- " \n\t" \
- \
- : "=r" (__res) /* %0 */ \
- \
- : "i" (__NR_##name) /* %1 */ \
- , "i" (TRAP_ID_SYSCALL) /* %2 */ \
- , "r" ((long) a) /* %3 */ \
- , "r" ((long) b) /* %4 */ \
- , "r" ((long) c) /* %5 */ \
- , "r" ((long) d) /* %6 */ \
- \
- : "r2" /* Clobbered */ \
- , "r3" /* Clobbered */ \
- , "r4" /* Clobbered */ \
- , "r5" /* Clobbered */ \
- , "r6" /* Clobbered */ \
- , "r7" /* Clobbered */ \
- ); \
- \
-__syscall_return(type,__res); \
-}
+#define ASM_ARGS_2 \
+ ASM_ARGS_1 \
+ "mov r5, %4\n\t"
+#define MAP_ARGS_2(a, b) \
+ MAP_ARGS_1(a) \
+ , "r" ((long) b)
+#define CLOB_ARGS_2 \
+ CLOB_ARGS_1 \
+ , "r5"
-#define _syscall5(type,name,atype,a,btype,b,ctype,c,dtype,d,etype,e) \
-type name (atype a,btype b,ctype c,dtype d,etype e) \
-{ \
- long __res; \
- \
- __asm__ __volatile__ ( \
- \
- " \n\t" \
- \
- " movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
- " movi r3, %1\n\t" /* __NR_##name */ \
- " mov r4, %3\n\t" /* (long) a */ \
- " mov r5, %4\n\t" /* (long) b */ \
- " mov r6, %5\n\t" /* (long) c */ \
- " mov r7, %6\n\t" /* (long) c */ \
- " mov r8, %7\n\t" /* (long) e */ \
- \
- " trap\n\t" \
- " mov %0, r2\n\t" /* syscall rtn */ \
- \
- " \n\t" \
- \
- : "=r" (__res) /* %0 */ \
- \
- : "i" (__NR_##name) /* %1 */ \
- , "i" (TRAP_ID_SYSCALL) /* %2 */ \
- , "r" ((long) a) /* %3 */ \
- , "r" ((long) b) /* %4 */ \
- , "r" ((long) c) /* %5 */ \
- , "r" ((long) d) /* %6 */ \
- , "r" ((long) e) /* %7 */ \
- \
- : "r2" /* Clobbered */ \
- , "r3" /* Clobbered */ \
- , "r4" /* Clobbered */ \
- , "r5" /* Clobbered */ \
- , "r6" /* Clobbered */ \
- , "r7" /* Clobbered */ \
- , "r8" /* Clobbered */ \
- ); \
- \
-__syscall_return(type,__res); \
-}
+#define ASM_ARGS_3 \
+ ASM_ARGS_2 \
+ "mov r6, %5\n\t"
+#define MAP_ARGS_3(a, b, c) \
+ MAP_ARGS_2(a, b) \
+ , "r" ((long) c)
+#define CLOB_ARGS_3 \
+ CLOB_ARGS_2 \
+ , "r6"
-#define _syscall6(type,name,atype,a,btype,b,ctype,c,dtype,d,etype,e,ftype,f) \
-type name (atype a,btype b,ctype c,dtype d,etype e,ftype f) \
-{ \
- long __res; \
- \
- __asm__ __volatile__ ( \
- \
- " \n\t" \
- \
- " movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
- " movi r3, %1\n\t" /* __NR_##name */ \
- " mov r4, %3\n\t" /* (long) a */ \
- " mov r5, %4\n\t" /* (long) b */ \
- " mov r6, %5\n\t" /* (long) c */ \
- " mov r7, %6\n\t" /* (long) c */ \
- " mov r8, %7\n\t" /* (long) e */ \
- " mov r9, %8\n\t" /* (long) f */ \
- \
- " trap\n\t" \
- " mov %0, r2\n\t" /* syscall rtn */ \
- \
- " \n\t" \
- \
- : "=r" (__res) /* %0 */ \
- \
- : "i" (__NR_##name) /* %1 */ \
- , "i" (TRAP_ID_SYSCALL) /* %2 */ \
- , "r" ((long) a) /* %3 */ \
- , "r" ((long) b) /* %4 */ \
- , "r" ((long) c) /* %5 */ \
- , "r" ((long) d) /* %6 */ \
- , "r" ((long) e) /* %7 */ \
- , "r" ((long) f) /* %8 */ \
- \
- : "r2" /* Clobbered */ \
- , "r3" /* Clobbered */ \
- , "r4" /* Clobbered */ \
- , "r5" /* Clobbered */ \
- , "r6" /* Clobbered */ \
- , "r7" /* Clobbered */ \
- , "r8" /* Clobbered */ \
- , "r9" /* Clobbered */ \
- ); \
- \
-__syscall_return(type,__res); \
-}
+#define ASM_ARGS_4 \
+ ASM_ARGS_3 \
+ "mov r7, %6\n\t"
+#define MAP_ARGS_4(a, b, c, d) \
+ MAP_ARGS_3(a, b, c) \
+ , "r" ((long) d)
+#define CLOB_ARGS_4 \
+ CLOB_ARGS_3 \
+ , "r7"
+
+#define ASM_ARGS_5 \
+ ASM_ARGS_4 \
+ "mov r8, %7\n\t"
+#define MAP_ARGS_5(a, b, c, d, e) \
+ MAP_ARGS_4(a, b, c, d) \
+ , "r" ((long) e)
+#define CLOB_ARGS_5 \
+ CLOB_ARGS_4 \
+ , "r8"
+
+#define ASM_ARGS_6 \
+ ASM_ARGS_5 \
+ "mov r9, %8\n\t"
+#define MAP_ARGS_6(a, b, c, d, e, f) \
+ MAP_ARGS_5(a, b, c, d, e) \
+ , "r" ((long) f)
+#define CLOB_ARGS_6 \
+ CLOB_ARGS_5 \
+ , "r9"
#endif /* __ASSEMBLER__ */
#endif /* _BITS_SYSCALLS_H */
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 21:31:50 +0000