diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/arm/frame.h | 26 | ||||
| -rw-r--r-- | sysdeps/generic/backtrace.c | 15 | ||||
| -rw-r--r-- | sysdeps/generic/frame.h | 24 | ||||
| -rw-r--r-- | sysdeps/generic/segfault.c | 11 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/arm/bits/armsigctx.h | 9 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/arm/sigcontextinfo.h | 5 |
6 files changed, 73 insertions, 17 deletions
diff --git a/sysdeps/arm/frame.h b/sysdeps/arm/frame.h new file mode 100644 index 0000000000..16f329c0e5 --- /dev/null +++ b/sysdeps/arm/frame.h @@ -0,0 +1,26 @@ +/* Definition of stack frame structure. ARM/APCS version. + Copyright (C) 2000 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +/* This is the APCS stack backtrace structure. */ +struct layout +{ + struct layout *next; + void *sp; + void *return_address; +}; diff --git a/sysdeps/generic/backtrace.c b/sysdeps/generic/backtrace.c index 2d329e19cf..3eae3f44f7 100644 --- a/sysdeps/generic/backtrace.c +++ b/sysdeps/generic/backtrace.c @@ -19,7 +19,8 @@ Boston, MA 02111-1307, USA. */ #include <execinfo.h> - +#include <frame.h> +#include <sigcontextinfo.h> /* This is a global variable set at program start time. It marks the highest used stack address. */ @@ -49,11 +50,11 @@ extern void *__libc_stack_end; # define INNER_THAN < #endif -struct layout -{ - struct layout *next; - void *return_address; -}; +/* By default assume the `next' pointer in struct layout points to the + next struct layout. */ +#ifndef ADVANCE_STACK_FRAME +# define ADVANCE_STACK_FRAME(next) ((struct layout *) (next)) +#endif int __backtrace (array, size) @@ -81,7 +82,7 @@ __backtrace (array, size) array[cnt++] = current->return_address; - current = current->next; + current = ADVANCE_STACK_FRAME (current->next); } return cnt; diff --git a/sysdeps/generic/frame.h b/sysdeps/generic/frame.h new file mode 100644 index 0000000000..7ad7a64aab --- /dev/null +++ b/sysdeps/generic/frame.h @@ -0,0 +1,24 @@ +/* Definition of stack frame structure. Generic version. + Copyright (C) 2000 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +struct layout +{ + void *next; + void *return_address; +}; diff --git a/sysdeps/generic/segfault.c b/sysdeps/generic/segfault.c index b1bb178d7a..41e3aa54d8 100644 --- a/sysdeps/generic/segfault.c +++ b/sysdeps/generic/segfault.c @@ -28,6 +28,9 @@ #include <unistd.h> #include <stdio-common/_itoa.h> +/* Get the definition of "struct layout". */ +#include <frame.h> + /* This file defines macros to access the content of the sigcontext element passed up by the signal handler. */ #include <sigcontextinfo.h> @@ -72,14 +75,6 @@ extern void *__libc_stack_end; /* We'll use tis a lot. */ #define WRITE_STRING(s) write (fd, s, strlen (s)) - -struct layout -{ - void *next; - void *return_address; -}; - - /* Name of the output file. */ static const char *fname; diff --git a/sysdeps/unix/sysv/linux/arm/bits/armsigctx.h b/sysdeps/unix/sysv/linux/arm/bits/armsigctx.h index 3435a961bc..636a93bd95 100644 --- a/sysdeps/unix/sysv/linux/arm/bits/armsigctx.h +++ b/sysdeps/unix/sysv/linux/arm/bits/armsigctx.h @@ -1,5 +1,5 @@ /* Definition of `struct sigcontext' for Linux/ARM - Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc. + Copyright (C) 1996, 1997, 1998, 1999, 2000 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 @@ -21,6 +21,12 @@ Fortunately 2.0 puts a magic number in the first word and this is not a legal value for `trap_no', so we can tell them apart. */ +/* Early 2.2 and 2.3 kernels do not have the `fault_address' member in + the sigcontext structure. Unfortunately there is no reliable way + to test for its presence and this word will contain garbage for too-old + kernels. Versions 2.2.14 and 2.3.35 (plus later versions) are known to + include this element. */ + #ifndef __ARMSIGCTX_H #define __ARMSIGCTX_H 1 @@ -50,6 +56,7 @@ union k_sigcontext unsigned long int arm_lr; unsigned long int arm_pc; unsigned long int arm_cpsr; + unsigned long fault_address; } v21; struct { diff --git a/sysdeps/unix/sysv/linux/arm/sigcontextinfo.h b/sysdeps/unix/sysv/linux/arm/sigcontextinfo.h index 7f6ecbdee1..1aaca1e155 100644 --- a/sysdeps/unix/sysv/linux/arm/sigcontextinfo.h +++ b/sysdeps/unix/sysv/linux/arm/sigcontextinfo.h @@ -24,7 +24,10 @@ #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) ((void *)((ctx.v20.magic == SIGCONTEXT_2_0_MAGIC) ? \ +#define GET_FRAME(ctx) \ + ADVANCE_STACK_FRAME((void *)((ctx.v20.magic == SIGCONTEXT_2_0_MAGIC) ? \ 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)) +#define ADVANCE_STACK_FRAME(frm) \ + ((struct layout *)frm - 1) |