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Make syscall() work on hppa
- To: libc-alpha at sources dot redhat dot com
- Subject: Make syscall() work on hppa
- From: willy at ldl dot fc dot hp dot com (Matthew Wilcox)
- Date: Tue, 5 Jun 2001 23:32:10 -0600
2001-05-01 Richard Hirst <rhirst@linuxcare.com>
* sysdeps/unix/sysv/linux/hppa/syscall.S: remove dummy syscall.
* sysdeps/unix/sysv/linux/hppa/sysdep.c: implement syscall.
diff -urNx CVS glibc-223/sysdeps/unix/sysv/linux/hppa/syscall.S glibc-merge/sysdeps/unix/sysv/linux/hppa/syscall.S
--- glibc-223/sysdeps/unix/sysv/linux/hppa/syscall.S Thu Nov 16 13:00:55 2000
+++ glibc-merge/sysdeps/unix/sysv/linux/hppa/syscall.S Wed May 2 17:48:50 2001
@@ -21,8 +21,5 @@
/* Please consult the file sysdeps/unix/sysv/linux/i386/sysdep.h for
more information about the value -4095 used below.*/
- .text
-ENTRY (syscall)
- b .
- nop
+/* hppa implements syscall() in 'C'; see sysdep.c */
diff -urNx CVS glibc-223/sysdeps/unix/sysv/linux/hppa/sysdep.c glibc-merge/sysdeps/unix/sysv/linux/hppa/sysdep.c
--- glibc-223/sysdeps/unix/sysv/linux/hppa/sysdep.c Thu Nov 16 13:00:55 2000
+++ glibc-merge/sysdeps/unix/sysv/linux/hppa/sysdep.c Wed May 2 17:48:50 2001
@@ -32,3 +32,28 @@
#undef errno
int errno = 0;
weak_alias (errno, _errno)
+
+/* hppa implements syscall() in 'C'; would typically be in syscall.S */
+
+int
+syscall(int sysnum, int arg0, int arg1, int arg2, int arg3, int arg4, int arg5)
+{
+ long __sys_res;
+ {
+ register unsigned long __res asm("r28");
+ LOAD_ARGS_6(arg0, arg1, arg2, arg3, arg4, arg5)
+ asm volatile(
+ "ble 0x100(%%sr2, %%r0)\n\t"
+ "copy %1, %%r20"
+ : "=r" (__res)
+ : "r" (sysnum) ASM_ARGS_6
+ );
+ __sys_res = __res;
+ }
+ if ((unsigned long) __sys_res >= (unsigned long)-4095) {
+ __set_errno(-__sys_res);
+ __sys_res = -1;
+ }
+ return __sys_res;
+}
+