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uclibc: add prctl syscall fix for AVR32 architecture

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This patch fixes the prctl syscall for the AVR32 architecture, since this
architecture assumes you handle varargs in a proper way, always.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Hans-Christian Egtvedt 2009-12-15 10:36:33 +01:00 committed by Peter Korsgaard
parent d3df830c2b
commit b4f01dcc10
1 changed files with 29 additions and 0 deletions
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29
toolchain/uClibc/uClibc-0.9.30-fix-varargs-in-prctl-syscall.patch.avr32 Normal file
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@ -0,0 +1,29 @@
--- a/libc/sysdeps/linux/common/prctl.c
+++ b/libc/sysdeps/linux/common/prctl.c
@@ -12,6 +12,24 @@
/* psm: including sys/prctl.h would depend on kernel headers */
#ifdef __NR_prctl
-extern int prctl (int, long, long, long, long);
-_syscall5(int, prctl, int, option, long, arg2, long, arg3, long, arg4, long, arg5)
+#define __NR___syscall_prctl __NR_prctl
+static inline _syscall5(int, __syscall_prctl, int, option, long, arg2, long, arg3, long,
+ arg4, long, arg5);
+
+int prctl(int option, ...) {
+ long arg2 = 0;
+ long arg3 = 0;
+ long arg4 = 0;
+ long arg5 = 0;
+ va_list ap;
+
+ va_start(ap, option);
+ arg2 = va_arg(ap, long);
+ arg3 = va_arg(ap, long);
+ arg4 = va_arg(ap, long);
+ arg5 = va_arg(ap, long);
+ va_end(ap);
+
+ return __syscall_prctl(option, arg2, arg3, arg4, arg5);
+}
#endif