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Re: [PATCH] Read arm core files
- From: Girish Shilamkar <girish at linsyssoft dot com>
- To: tausq at debian dot org
- Cc: rearnsha at arm dot com, Mark Kettenis <mark dot kettenis at xs4all dot nl>, gdb-patches at sources dot redhat dot com
- Date: Wed, 08 Mar 2006 13:03:13 +0530
- Subject: Re: [PATCH] Read arm core files
- References: <1140001485.3359.12.camel@krypton> <200602151155.k1FBtPsV003683@elgar.sibelius.xs4all.nl> <1140781305.3228.13.camel@krypton> <200602241929.k1OJT0ie013339@elgar.sibelius.xs4all.nl>
Hi,
Thanks Randolph, I have added $(regset_h) to the
dependency list of arm-linux-tdep.o in Makefile.in. I have attached the
updated patch.
Regards,
-Girish.
2006-03-08 Girish Shilamkar <girish@linsyssoft.com>
* arm-linux-tdep.c (arm_linux_supply_gregset): Supply general purpose
register set to register cache.
(arm_linux_supply_fpregset): Supply floating-point register set to
register cache.
(arm_linux_regset_from_core_section): Return the appropriate register
set for the core section.
* config/arm/linux.mt: Add corelow.o.
* Makefile.in: Add $(regset_h) to dependency list of arm-linux-tdep.o.
Index: cvs-6.4/gdb/arm-linux-tdep.c
===================================================================
--- cvs-6.4.orig/gdb/arm-linux-tdep.c 2006-02-24 06:11:11.000000000 -0500
+++ cvs-6.4/gdb/arm-linux-tdep.c 2006-03-08 02:13:20.712798880 -0500
@@ -33,6 +33,7 @@
#include "osabi.h"
#include "trad-frame.h"
#include "tramp-frame.h"
+#include "regset.h"
#include "arm-tdep.h"
#include "glibc-tdep.h"
@@ -230,6 +231,18 @@
#define ARM_SET_R7_RT_SIGRETURN 0xe3a070ad
#define ARM_EABI_SYSCALL 0xef000000
+/* The following enums are used to implement the core file support. */
+enum {
+ ARM_ELF_NGREG = 18,
+ ARM_ELF_NFPREG = 33,
+ ARM_ELF_NVRREG = 33
+};
+
+enum {
+ ARM_ELF_GREGSET_SIZE = (ARM_ELF_NGREG * 4),
+ ARM_ELF_FPREGSET_SIZE = (ARM_ELF_NFPREG * 12)
+};
+
static void
arm_linux_sigtramp_cache (struct frame_info *next_frame,
struct trad_frame_cache *this_cache,
@@ -315,6 +328,69 @@
arm_linux_rt_sigreturn_init
};
+/* Supply register REGNUM from the buffer specified by GREGS and LEN
+ in the general-purpose register set REGSET to register cache
+ REGCACHE. */
+
+void
+arm_linux_supply_gregset (const struct regset *regset,
+ struct regcache * regcache,
+ int regnum, const void *gregs, size_t size)
+{
+ int regi;
+ const bfd_byte *buf = gregs;
+
+ for (regi = 0; regi < 16; regi++)
+ regcache_raw_supply(regcache, regi, buf + 4 * regi);
+
+ regcache_raw_supply (regcache, ARM_FPS_REGNUM, buf + 4 * 16);
+ regcache_raw_supply (regcache, ARM_PS_REGNUM, buf + 4 * 17);
+}
+
+static struct regset arm_linux_gregset = {
+ NULL,
+ arm_linux_supply_gregset
+};
+
+/* Supply register REGNUM from the buffer specified by FPREGS and LEN
+ in the floating-point register set REGSET to register cache
+ REGCACHE. */
+
+void
+arm_linux_supply_fpregset (const struct regset *regset,
+ struct regcache * regcache,
+ int regnum, const void *fpregs, size_t size)
+{
+ int regi;
+ const bfd_byte *buf = fpregs;
+
+ for (regi = 0; regi < 32; regi++)
+ regcache_raw_supply (regcache, FP0_REGNUM + regi, buf + 8 * regi);
+}
+
+static struct regset arm_linux_fpregset = {
+ NULL,
+ arm_linux_supply_fpregset
+};
+
+/* Return the appropriate register set for the core section identified
+ by SECT_NAME and SECT_SIZE. */
+
+static const struct regset *
+arm_linux_regset_from_core_section (struct gdbarch *core_arch,
+ const char *sect_name, size_t sect_size)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (core_arch);
+
+ if (strcmp (sect_name, ".reg") == 0 && sect_size == ARM_ELF_GREGSET_SIZE)
+ return &arm_linux_gregset;
+
+ if (strcmp (sect_name, ".reg2") == 0 && sect_size == ARM_ELF_FPREGSET_SIZE)
+ return &arm_linux_fpregset;
+
+ return NULL;
+}
+
static void
arm_linux_init_abi (struct gdbarch_info info,
struct gdbarch *gdbarch)
@@ -361,6 +437,9 @@
set_gdbarch_fetch_tls_load_module_address (gdbarch,
svr4_fetch_objfile_link_map);
+ set_gdbarch_regset_from_core_section
+ (gdbarch, arm_linux_regset_from_core_section);
+
tramp_frame_prepend_unwinder (gdbarch,
&arm_linux_sigreturn_tramp_frame);
tramp_frame_prepend_unwinder (gdbarch,
Index: cvs-6.4/gdb/config/arm/linux.mt
===================================================================
--- cvs-6.4.orig/gdb/config/arm/linux.mt 2006-02-24 06:11:11.000000000 -0500
+++ cvs-6.4/gdb/config/arm/linux.mt 2006-03-08 02:13:20.727796600 -0500
@@ -1,3 +1,3 @@
# Target: ARM based machine running GNU/Linux
DEPRECATED_TM_FILE= tm-linux.h
-TDEPFILES= arm-tdep.o arm-linux-tdep.o glibc-tdep.o solib.o solib-svr4.o solib-legacy.o symfile-mem.o
+TDEPFILES= arm-tdep.o arm-linux-tdep.o glibc-tdep.o solib.o solib-svr4.o solib-legacy.o symfile-mem.o corelow.o
Index: cvs-6.4/gdb/Makefile.in
===================================================================
--- cvs-6.4.orig/gdb/Makefile.in 2006-03-08 02:12:38.633195952 -0500
+++ cvs-6.4/gdb/Makefile.in 2006-03-08 02:15:00.322655880 -0500
@@ -1748,7 +1748,8 @@
arm-linux-tdep.o: arm-linux-tdep.c $(defs_h) $(target_h) $(value_h) \
$(gdbtypes_h) $(floatformat_h) $(gdbcore_h) $(frame_h) $(regcache_h) \
$(doublest_h) $(solib_svr4_h) $(osabi_h) $(arm_tdep_h) \
- $(glibc_tdep_h) $(trad_frame_h) $(tramp_frame_h) $(gdb_string_h)
+ $(glibc_tdep_h) $(trad_frame_h) $(tramp_frame_h) $(gdb_string_h) \
+ $(regset_h)
armnbsd-nat.o: armnbsd-nat.c $(defs_h) $(gdbcore_h) $(inferior_h) \
$(regcache_h) $(target_h) $(gdb_string_h) $(arm_tdep_h) $(inf_ptrace_h)
armnbsd-tdep.o: armnbsd-tdep.c $(defs_h) $(osabi_h) $(gdb_string_h) \