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Diffstat (limited to 'libc/sysdeps/linux/h8300/bits/syscalls.h')
-rw-r--r--libc/sysdeps/linux/h8300/bits/syscalls.h214
1 files changed, 74 insertions, 140 deletions
diff --git a/libc/sysdeps/linux/h8300/bits/syscalls.h b/libc/sysdeps/linux/h8300/bits/syscalls.h
index 5867ed608..b43795f2e 100644
--- a/libc/sysdeps/linux/h8300/bits/syscalls.h
+++ b/libc/sysdeps/linux/h8300/bits/syscalls.h
@@ -1,151 +1,85 @@
-/* Unlike the asm/unistd.h kernel header file (which this is partly based on),
- * this file must be able to cope with PIC and non-PIC code. For some arches
- * there is no difference. For x86 (which has far too few registers) there is
- * a difference. Regardless, including asm/unistd.h is hereby officially
- * forbidden. Don't do it. It is bad for you.
- */
+#ifndef _BITS_SYSCALLS_H
+#define _BITS_SYSCALLS_H
#ifndef _SYSCALL_H
# error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead."
#endif
-#define __syscall_return(type, res) \
-do { \
- if ((unsigned long)(res) >= (unsigned long)(-125)) { \
- /* avoid using res which is declared to be in register d0; \
- errno might expand to a function call and clobber it. */ \
- int __err = -(res); \
- errno = __err; \
- res = -1; \
- } \
- return (type) (res); \
-} while (0)
+#ifndef __ASSEMBLER__
-#define _syscall0(type, name) \
-type name(void) \
-{ \
- register long __res __asm__("er0"); \
- __asm__ __volatile__ ("mov.l %1,er0\n\t" \
- "trapa #0\n\t" \
- : "=r" (__res) \
- : "ir" (__NR_##name) \
- : "cc"); \
- if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
- errno = -__res; \
- __res = -1; \
- } \
- return (type)__res; \
-}
+#include <errno.h>
-#define _syscall1(type, name, atype, a) \
-type name(atype a) \
-{ \
- register long __res __asm__("er0"); \
- __asm__ __volatile__ ("mov.l %2, er1\n\t" \
- "mov.l %1, er0\n\t" \
- "trapa #0\n\t" \
- : "=r" (__res) \
- : "ir" (__NR_##name), \
- "g" ((long)a) \
- : "cc", "er1"); \
- if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
- errno = -__res; \
- __res = -1; \
- } \
- return (type)__res; \
-}
+#define ASMFMT_0
+#define ASMFMT_1 , "g"(er1)
+#define ASMFMT_2 , "g"(er1), "g"(er2)
+#define ASMFMT_3 , "g"(er1), "g"(er2), "g"(er3)
+#define ASMFMT_4 , "g"(er1), "g"(er2), "g"(er3), "g"(er4)
+#define ASMFMT_5 , "g"(er1), "g"(er2), "g"(er3), "g"(er4), "g"(er5)
+#define ASMFMT_6 , "g"(er1), "g"(er2), "g"(er3), "g"(er4), "m"(er5), "m"(er6)
-#define _syscall2(type, name, atype, a, btype, b) \
-type name(atype a, btype b) \
-{ \
- register long __res __asm__("er0"); \
- __asm__ __volatile__ ("mov.l %3, er2\n\t" \
- "mov.l %2, er1\n\t" \
- "mov.l %1, er0\n\t" \
- "trapa #0\n\t" \
- : "=r" (__res) \
- : "ir" (__NR_##name), \
- "g" ((long)a), \
- "g" ((long)b) \
- : "cc", "er1", "er2"); \
- if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
- errno = -__res; \
- __res = -1; \
- } \
- return (type)__res; \
-}
+#define SUBSTITUTE_ARGS_0() do {} while(0);
+#define SUBSTITUTE_ARGS_1(arg1) \
+ register long int er1 __asm__("er1") = (long int)arg1;
+#define SUBSTITUTE_ARGS_2(arg1, arg2) \
+ register long int er1 __asm__("er1") = (long int)arg1; \
+ register long int er2 __asm__("er2") = (long int)arg2;
+#define SUBSTITUTE_ARGS_3(arg1, arg2, arg3) \
+ register long int er1 __asm__("er1") = (long int)arg1; \
+ register long int er2 __asm__("er2") = (long int)arg2; \
+ register long int er3 __asm__("er3") = (long int)arg3;
+#define SUBSTITUTE_ARGS_4(arg1, arg2, arg3, arg4) \
+ register long int er1 __asm__("er1") = (long int)arg1; \
+ register long int er2 __asm__("er2") = (long int)arg2; \
+ register long int er3 __asm__("er3") = (long int)arg3; \
+ register long int er4 __asm__("er4") = (long int)arg4;
+#define SUBSTITUTE_ARGS_5(arg1, arg2, arg3, arg4, arg5) \
+ register long int er1 __asm__("er1") = (long int)arg1; \
+ register long int er2 __asm__("er2") = (long int)arg2; \
+ register long int er3 __asm__("er3") = (long int)arg3; \
+ register long int er4 __asm__("er4") = (long int)arg4; \
+ register long int er5 __asm__("er5") = (long int)arg5;
+#define SUBSTITUTE_ARGS_6(arg1, arg2, arg3, arg4, arg5, arg6) \
+ register long int er1 __asm__("er1") = (long int)arg1; \
+ register long int er2 __asm__("er2") = (long int)arg2; \
+ register long int er3 __asm__("er3") = (long int)arg3; \
+ register long int er4 __asm__("er4") = (long int)arg4; \
+ long int er5 = (long int)arg5; \
+ long int er6 = (long int)arg6;
-#define _syscall3(type, name, atype, a, btype, b, ctype, c) \
-type name(atype a, btype b, ctype c) \
-{ \
- register long __res __asm__("er0"); \
- __asm__ __volatile__ ("mov.l %4, er3\n\t" \
- "mov.l %3, er2\n\t" \
- "mov.l %2, er1\n\t" \
- "mov.l %1, er0\n\t" \
- "trapa #0\n\t" \
- : "=r" (__res) \
- : "ir" (__NR_##name), \
- "g" ((long)a), \
- "g" ((long)b), \
- "g" ((long)c) \
- : "cc", "er1", "er2", "er3"); \
- if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
- errno = -__res; \
- __res = -1; \
- } \
- return (type)__res; \
-}
+#define LOAD_ARGS_0
+#define LOAD_ARGS_1
+#define LOAD_ARGS_2
+#define LOAD_ARGS_3
+#define LOAD_ARGS_4
+#define LOAD_ARGS_5
+#define LOAD_ARGS_6 "mov.l er5,@-sp\n\tmov.l %6,er5\n\t" \
+ "mov.l er6,@-sp\n\tmov.l %7,er6\n\t"
-#define _syscall4(type, name, atype, a, btype, b, ctype, c, dtype, d) \
-type name(atype a, btype b, ctype c, dtype d) \
-{ \
- register long __res __asm__("er0"); \
- __asm__ __volatile__ ("mov.l %5, er4\n\t" \
- "mov.l %4, er3\n\t" \
- "mov.l %3, er2\n\t" \
- "mov.l %2, er1\n\t" \
- "mov.l %1, er0\n\t" \
- "trapa #0\n\t" \
- : "=r" (__res) \
- : "ir" (__NR_##name), \
- "g" ((long)a), \
- "g" ((long)b), \
- "g" ((long)c), \
- "g" ((long)d) \
- : "cc", "er1", "er2", "er3", "er4"); \
- if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
- errno = -__res; \
- __res = -1; \
- } \
- return (type)__res; \
-}
+#define RESTORE_ARGS_0
+#define RESTORE_ARGS_1
+#define RESTORE_ARGS_2
+#define RESTORE_ARGS_3
+#define RESTORE_ARGS_4
+#define RESTORE_ARGS_5
+#define RESTORE_ARGS_6 "mov.l @sp+,er6\n\tmov.l @sp+,er5"
-#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) \
-{ \
- register long __res __asm__("er0"); \
- __asm__ __volatile__ ( \
- "mov.l er5,@-sp\n\t" \
- "mov.l %5, er4\n\t" \
- "mov.l %4, er3\n\t" \
- "mov.l %3, er2\n\t" \
- "mov.l %2, er1\n\t" \
- "mov.l %1, er0\n\t" \
- "mov.l %6, er5\n\t" \
- "trapa #0\n\t" \
- "mov.l @sp+,er5\n\t" \
- : "=r" (__res) \
- : "ir" (__NR_##name), \
- "g" ((long)a), \
- "g" ((long)b), \
- "g" ((long)c), \
- "g" ((long)d), \
- "m" ((long)e) \
- : "cc", "er1", "er2", "er3", "er4"); \
- if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
- errno = -__res; \
- __res = -1; \
- } \
- return (type)__res; \
-}
+/* The _NCS variant allows non-constant syscall numbers. */
+#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
+(__extension__ \
+ ({ \
+ register long int er0 __asm__ ("er0"); \
+ SUBSTITUTE_ARGS_##nr(args) \
+ __asm__ __volatile__ ( \
+ LOAD_ARGS_##nr \
+ "mov.l %1,er0\n\t" \
+ "trapa #0\n\t" \
+ RESTORE_ARGS_##nr \
+ : "=r" (er0) \
+ : "ir" (name) ASMFMT_##nr \
+ : "memory" \
+ ); \
+ (int) er0; \
+ }) \
+)
+#endif /* __ASSEMBLER__ */
+#endif /* _BITS_SYSCALLS_H */
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