mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
b309f058cf
General purpose registers in mcontext_t structure are 8 bytes long for both MIPS32/MIPS64. get/set/make/swap context implementations for MIPS O32 incorrectly assume that general purpose registers in this structure are 4 bytes long. This patch is fixing that. Tested for MIPS O32 LE and BE. Compared objdump of modified functions for mips n32 and mips n64. [BZ #21548] * sysdeps/unix/sysv/linux/mips/getcontext.S: Define MCONTEXT_SZGREG as 8 and use it when copying general purpose registers. * sysdeps/unix/sysv/linux/mips/makecontext.S: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/Makefile: Include new test for mips o32. * sysdeps/unix/sysv/linux/mips/mips32/bug-getcontext-mips-gp.c: Added new test for mips o32. * sysdeps/unix/sysv/linux/mips/setcontext.S: Define MCONTEXT_SZGREG as 8 and use it when copying general purpose registers. * sysdeps/unix/sysv/linux/mips/swapcontext.S: Likewise.
64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/* Tests register values retreived by getcontext() for mips o32.
|
|
Copyright (C) 2017 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
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <ucontext.h>
|
|
|
|
|
|
#if !defined __mips__ || _MIPS_SIM != _ABIO32
|
|
# error "MIPS O32 specific test."
|
|
#endif
|
|
|
|
#define SP_REG 29
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
ucontext_t ctx;
|
|
memset (&ctx, 0, sizeof (ctx));
|
|
int status = getcontext (&ctx);
|
|
if (status)
|
|
{
|
|
printf ("\ngetcontext() failed, errno: %d.\n", errno);
|
|
return 1;
|
|
}
|
|
|
|
if (ctx.uc_mcontext.gregs[SP_REG] == 0
|
|
|| ctx.uc_mcontext.gregs[SP_REG] > 0xffffffff)
|
|
{
|
|
printf ("\nError getcontext(): invalid $sp = 0x%llx.\n",
|
|
ctx.uc_mcontext.gregs[SP_REG]);
|
|
return 1;
|
|
}
|
|
|
|
if (ctx.uc_mcontext.pc == 0
|
|
|| ctx.uc_mcontext.pc > 0xffffffff)
|
|
{
|
|
printf ("\nError getcontext(): invalid ctx.uc_mcontext.pc = 0x%llx.\n",
|
|
ctx.uc_mcontext.pc);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|