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* sysdeps/m68k/setjmp.c: Use __builtin_return_address and

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__builtin_frame_address.  Don't call __sigjmp_save in ld.so.
This commit is contained in:
Andreas Schwab 2006-10-03 15:50:57 +00:00
parent 4b32aae99b
commit 23cd7e446d
2 changed files with 12 additions and 4 deletions
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3
ChangeLog.m68k
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@ -1,5 +1,8 @@
2006-10-03 Andreas Schwab <schwab@suse.de>
* sysdeps/m68k/setjmp.c: Use __builtin_return_address and
__builtin_frame_address. Don't call __sigjmp_save in ld.so.
* sysdeps/unix/sysv/linux/m68k/mremap.S: Accept fifth parameter.
2006-10-03 Richard Sandiford <richard@codesourcery.com>

13
sysdeps/m68k/setjmp.c
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1991, 1992, 1994, 1997, 2001 Free Software Foundation, Inc.
/* Copyright (C) 1991, 1992, 1994, 1997, 2001, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -37,17 +37,17 @@ __sigsetjmp (jmp_buf env, int savemask)
: : "m" (env[0].__jmpbuf[0].__dregs[0]));
/* Save return address in place of register A0. */
env[0].__jmpbuf[0].__aregs[0] = ((void **) &env)[-1];
env[0].__jmpbuf[0].__aregs[0] = __builtin_return_address (0);
/* Save address registers A1 through A5. */
asm volatile ("movem%.l %/a1-%/a5, %0"
: : "m" (env[0].__jmpbuf[0].__aregs[1]));
/* Save caller's FP, not our own. */
env[0].__jmpbuf[0].__fp = ((void **) &env)[-2];
env[0].__jmpbuf[0].__fp = *(int **) __builtin_frame_address (0);
/* Save caller's SP, not our own. */
env[0].__jmpbuf[0].__sp = (void *) &env;
env[0].__jmpbuf[0].__sp = (int *) __builtin_frame_address (0) + 2;
#if defined __HAVE_68881__ || defined __HAVE_FPU__
/* Save floating-point (68881) registers FP0 through FP7. */
@ -58,8 +58,13 @@ __sigsetjmp (jmp_buf env, int savemask)
: : "m" (env[0].__jmpbuf[0].__fpregs[0]));
#endif
#if defined NOT_IN_libc && defined IS_IN_rtld
/* In ld.so we never save the signal mask. */
return 0;
#else
/* Save the signal mask if requested. */
return __sigjmp_save (env, savemask);
#endif
}
#if !defined BSD_SETJMP && !defined BSD__SETJMP
libc_hidden_def (__sigsetjmp)