diff options
| author | Manuel Novoa III <mjn3@codepoet.org> | 2003-12-02 19:06:32 +0000 |
|---|---|---|
| committer | Manuel Novoa III <mjn3@codepoet.org> | 2003-12-02 19:06:32 +0000 |
| commit | badf426f10ec949aa853aff22123c4e783a421c5 (patch) | |
| tree | d02c50fd4ae6e68e687a6b4cba6471c9a135867f /libc | |
| parent | 49583513c6f0575f89c32f4c38315327ab41721f (diff) | |
Add a syscall() implementation using a hacked version of the syscall6 macro.
Untested, but syscall() is needed by busybox for pivot_root at least.
Diffstat (limited to 'libc')
| -rw-r--r-- | libc/sysdeps/linux/sh/Makefile | 2 | ||||
| -rw-r--r-- | libc/sysdeps/linux/sh/syscall.c | 25 |
2 files changed, 26 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/sh/Makefile b/libc/sysdeps/linux/sh/Makefile index f0eaa19fe..0bcdaac4f 100644 --- a/libc/sysdeps/linux/sh/Makefile +++ b/libc/sysdeps/linux/sh/Makefile @@ -31,7 +31,7 @@ CTOR_TARGETS=$(TOPDIR)lib/crti.o $(TOPDIR)lib/crtn.o SSRC=setjmp.S __longjmp.S vfork.S clone.S SOBJS=$(patsubst %.S,%.o, $(SSRC)) -CSRC=_mmap.c longjmp.c pipe.c __init_brk.c brk.c sbrk.c +CSRC=_mmap.c longjmp.c pipe.c __init_brk.c brk.c sbrk.c syscall.c COBJS=$(patsubst %.c,%.o, $(CSRC)) OBJS=$(SOBJS) $(MOBJ) $(COBJS) diff --git a/libc/sysdeps/linux/sh/syscall.c b/libc/sysdeps/linux/sh/syscall.c new file mode 100644 index 000000000..b4a6a88f4 --- /dev/null +++ b/libc/sysdeps/linux/sh/syscall.c @@ -0,0 +1,25 @@ + + +#include <features.h> +#include <errno.h> +#include <sys/types.h> +#include <sys/syscall.h> + +long syscall(long sysnum, + long arg1, long arg2, long arg3, + long arg4, long arg5, long arg6) +{ +register long __sc3 __asm__ ("r3") = sysnum; +register long __sc4 __asm__ ("r4") = (long) arg1; +register long __sc5 __asm__ ("r5") = (long) arg2; +register long __sc6 __asm__ ("r6") = (long) arg3; +register long __sc7 __asm__ ("r7") = (long) arg4; +register long __sc0 __asm__ ("r0") = (long) arg5; +register long __sc1 __asm__ ("r1") = (long) arg6; +__asm__ __volatile__ ("trapa #0x15" \ + : "=z" (__sc0) \ + : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6), "r" (__sc7), \ + "r" (__sc3), "r" (__sc1) \ + : "memory" ); +__syscall_return(long,__sc0); +} |