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authorUlrich Drepper <drepper@redhat.com>1999-12-27 06:09:11 +0000
committerUlrich Drepper <drepper@redhat.com>1999-12-27 06:09:11 +0000
commit010d77661b472541b39cc1ad95fd2b9e9f513c37 (patch)
tree4fa8278588d9361efd7c6eab08badb6a06d7d3dd /sysdeps
parent70e51ab9f37ec84b23ff5e090e0d9a322baf523d (diff)
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Update.
1999-12-26 Philip Blundell <philb@gnu.org> * sysdeps/unix/sysv/linux/arm/syscalls.list: Remove vm86. Set argument count for `syscall' to 7. * sysdeps/unix/sysv/linux/arm/sysdep.h: Add support for syscalls with more than five arguments. (DOARGS_5, UNDOARGS_5): Don't corrupt the calling stack frame.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/unix/sysv/linux/arm/syscalls.list3
-rw-r--r--sysdeps/unix/sysv/linux/arm/sysdep.h27
2 files changed, 23 insertions, 7 deletions
diff --git a/sysdeps/unix/sysv/linux/arm/syscalls.list b/sysdeps/unix/sysv/linux/arm/syscalls.list
index 08839db952..60303d3df7 100644
--- a/sysdeps/unix/sysv/linux/arm/syscalls.list
+++ b/sysdeps/unix/sysv/linux/arm/syscalls.list
@@ -11,5 +11,4 @@ s_setresgid setresgid setresgid 3 __syscall_setresgid
s_setresuid setresuid setresuid 3 __syscall_setresuid
s_setreuid setreuid setreuid 2 __syscall_setreuid
s_setuid setuid setuid 1 __syscall_setuid
-syscall - syscall 5 syscall
-vm86 - vm86 1 __vm86 vm86
+syscall - syscall 7 syscall
diff --git a/sysdeps/unix/sysv/linux/arm/sysdep.h b/sysdeps/unix/sysv/linux/arm/sysdep.h
index 7812e99075..cd83389f37 100644
--- a/sysdeps/unix/sysv/linux/arm/sysdep.h
+++ b/sysdeps/unix/sysv/linux/arm/sysdep.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992, 93, 95, 96, 97, 98 Free Software Foundation, Inc.
+/* Copyright (C) 1992, 93, 95, 96, 97, 98, 99 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>, August 1995.
ARM changes by Philip Blundell, <pjb27@cam.ac.uk>, May 1997.
@@ -69,6 +69,8 @@
arg 3 r2
arg 4 r3
arg 5 r4 (this is different from the APCS convention)
+ arg 6 r5
+ arg 7 r6
The compiler is going to form a call by coming here, through PSEUDO, with
arguments
@@ -78,9 +80,12 @@
arg 3 r2
arg 4 r3
arg 5 [sp]
+ arg 6 [sp+4]
+ arg 7 [sp+8]
- We need to shuffle values between R4 and the stack so that the caller's
- R4 is not corrupted, and the kernel sees the right argument there.
+ We need to shuffle values between R4..R6 and the stack so that the
+ caller's v1..v3 and stack frame are not corrupted, and the kernel
+ sees the right arguments.
*/
@@ -95,14 +100,18 @@
#define DOARGS_2 /* nothing */
#define DOARGS_3 /* nothing */
#define DOARGS_4 /* nothing */
-#define DOARGS_5 ldr ip, [sp]; str r4, [sp]; mov r4, ip;
+#define DOARGS_5 str r4, [sp, $-4]!; ldr r4, [sp, $4];
+#define DOARGS_6 mov ip, sp; stmfd sp!, {r4, r5}; ldmia ip, {r4, r5};
+#define DOARGS_7 mov ip, sp; stmfd sp!, {r4, r5, r6}; ldmia ip, {r4, r5, r6};
#define UNDOARGS_0 /* nothing */
#define UNDOARGS_1 /* nothing */
#define UNDOARGS_2 /* nothing */
#define UNDOARGS_3 /* nothing */
#define UNDOARGS_4 /* nothing */
-#define UNDOARGS_5 ldr r4, [sp];
+#define UNDOARGS_5 ldr r4, [sp, $4]!;
+#define UNDOARGS_6 ldmfd sp!, {r4, r5};
+#define UNDOARGS_7 ldmfd sp!, {r4, r5, r6};
#else /* not __ASSEMBLER__ */
@@ -149,6 +158,14 @@
register int _v1 asm ("v1") = (int) (a5); \
LOAD_ARGS_4 (a1, a2, a3, a4)
#define ASM_ARGS_5 ASM_ARGS_4, "r" (_v1)
+#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \
+ register int _v2 asm ("v2") = (int) (a6); \
+ LOAD_ARGS_5 (a1, a2, a3, a4, a5)
+#define ASM_ARGS_6 ASM_ARGS_5, "r" (_v2)
+#define LOAD_ARGS_7(a1, a2, a3, a4, a5, a6, a7) \
+ register int _v3 asm ("v3") = (int) (a7); \
+ LOAD_ARGS_6 (a1, a2, a3, a4, a5, a6)
+#define ASM_ARGS_7 ASM_ARGS_6, "r" (_v3)
#endif /* __ASSEMBLER__ */