This is the mail archive of the
gdb-patches@sourceware.org
mailing list for the GDB project.
Re: [PATCH] Read arm core files
Hi,
Thank you very much, Mark Kettenis and Richard Earnshaw, for your
suggestions. I have modified the patch as per your instructions. Please
let me know if there are more changes to be done.
Regards,
-Girish Shilamkar.
2006-02-24 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.
Index: cvs-6.4/gdb/arm-linux-tdep.c
===================================================================
--- cvs-6.4.orig/gdb/arm-linux-tdep.c 2006-02-24 03:22:21.000000000 -0500
+++ cvs-6.4/gdb/arm-linux-tdep.c 2006-02-24 05:51:21.819726224 -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 03:22:21.000000000 -0500
+++ cvs-6.4/gdb/config/arm/linux.mt 2006-02-24 03:22:27.000000000 -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