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| author | Ulrich Drepper <drepper@redhat.com> | 2002-12-21 18:53:25 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2002-12-21 18:53:25 +0000 |
| commit | e361ccd9992504d1b1b1f496f182dbfa0fdca643 (patch) | |
| tree | b18cc75f9f61e7ffe06bcabe2a29e520af246db4 /sysdeps/unix/sysv/linux/arm | |
| parent | 7e791f32c88ea7f6800c6e58cc96b0fab09aa9a9 (diff) | |
| download | glibc-e361ccd9992504d1b1b1f496f182dbfa0fdca643.tar glibc-e361ccd9992504d1b1b1f496f182dbfa0fdca643.tar.gz glibc-e361ccd9992504d1b1b1f496f182dbfa0fdca643.tar.bz2 glibc-e361ccd9992504d1b1b1f496f182dbfa0fdca643.zip | |
Update.
2002-12-20 Art Haas <ahaas@airmail.net>
* sysdeps/gnu/siglist.c: Convert GCC extension initializer
syntax to C99.
2002-12-21 Philip Blundell <philb@gnu.org>
* sysdeps/arm/elf/start.S (_start): Optimise a little. Push stack
top as seventh arg to __libc_start_main.
Reported by paulnash@wildseed.com.
* sysdeps/unix/sysv/linux/arm/clone.S: Small optimisation.
* sysdeps/unix/sysv/linux/arm/sigcontextinfo.h: Elide
compatibility cruft when new enough kernel is assumed.
Diffstat (limited to 'sysdeps/unix/sysv/linux/arm')
| -rw-r--r-- | sysdeps/unix/sysv/linux/arm/clone.S | 8 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/arm/sigcontextinfo.h | 18 |
2 files changed, 20 insertions, 6 deletions
diff --git a/sysdeps/unix/sysv/linux/arm/clone.S b/sysdeps/unix/sysv/linux/arm/clone.S index c9a1ec23ac..1c6f7861cf 100644 --- a/sysdeps/unix/sysv/linux/arm/clone.S +++ b/sysdeps/unix/sysv/linux/arm/clone.S @@ -1,4 +1,4 @@ -/* Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc. +/* Copyright (C) 1996, 1997, 1998, 1999, 2002 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Pat Beirne <patb@corelcomputer.com> @@ -35,10 +35,8 @@ ENTRY(__clone) beq PLTJMP(syscall_error) @ insert the args onto the new stack - sub r1, r1, #8 - str r3, [r1, #4] - @ save the function pointer as the 0th element - str r0, [r1] + str r3, [r1, #-4]! + str r0, [r1, #-4]! @ do the system call @ get flags diff --git a/sysdeps/unix/sysv/linux/arm/sigcontextinfo.h b/sysdeps/unix/sysv/linux/arm/sigcontextinfo.h index aebc3cfd52..30c2e3a6ce 100644 --- a/sysdeps/unix/sysv/linux/arm/sigcontextinfo.h +++ b/sysdeps/unix/sysv/linux/arm/sigcontextinfo.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1999 Free Software Foundation, Inc. +/* Copyright (C) 1999, 2002 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Philip Blundell <philb@gnu.org>, 1999. @@ -18,10 +18,22 @@ 02111-1307 USA. */ #include <bits/armsigctx.h> +#include "kernel-features.h" #define SIGCONTEXT int _a2, int _a3, int _a4, union k_sigcontext #define SIGCONTEXT_EXTRA_ARGS _a2, _a3, _a4, +/* The sigcontext structure changed between 2.0 and 2.1 kernels. On any + modern system we should be able to assume that the "new" format will be + in use. */ +#if __LINUX_KERNEL_VERSION > 131328 + +#define GET_PC(ctx) ((void *) ctx.v21.arm_pc) +#define GET_FRAME(ctx) ADVANCE_STACK_FRAME ((void *) ctx.v21.arm_fp) +#define GET_STACK(ctx) ((void *) ctx.v21.arm_sp) + +#else + #define GET_PC(ctx) ((void *)((ctx.v20.magic == SIGCONTEXT_2_0_MAGIC) ? \ ctx.v20.reg.ARM_pc : ctx.v21.arm_pc)) #define GET_FRAME(ctx) \ @@ -29,7 +41,11 @@ ctx.v20.reg.ARM_fp : ctx.v21.arm_fp)) #define GET_STACK(ctx) ((void *)((ctx.v20.magic == SIGCONTEXT_2_0_MAGIC) ? \ ctx.v20.reg.ARM_sp : ctx.v21.arm_sp)) + +#endif + #define ADVANCE_STACK_FRAME(frm) \ ((struct layout *)frm - 1) + #define CALL_SIGHANDLER(handler, signo, ctx) \ (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx)) |