+2006-03-15 Kevin Buettner <kevinb@redhat.com>
+
+ * frv-linux-tdep.c (gdbcore.h, regcache.h, regset.h, gdb_string.h):
+ Include.
+ (FRV_ELF_NGREG, FRV_PT_PSR, FRV_PT_ISR, FRV_PT_CCR, FRV_PT_CCCR)
+ (FRV_PT_LR, FRV_PT_LCR, FRV_PT_PC, FRV_PT_GNER0, FRV_PT_GNER1)
+ (FRV_PT_IACC0H, FRV_PT_IACC0L, FRV_PT_GR, FRV_PT_TBR)
+ (FRV_PT_EXEC_FDPIC_LOADMAP, FRV_PT_INTERP_FDPIC_LOADMAP): Define.
+ (frv_elf_greg_t, frv_elf_gregset_t, frv_elf_fpreg_t)
+ (frv_elf_fpregset_t): Define types.
+ (frv_linux_supply_gregset, frv_linux_supply_fpregset)
+ (frv_linux_regset_from_core_section: New functions.
+ (frv_linux_gregset, frv_linux_fpregset): New static globals.
+ (frv_linux_init_abi): Register the `regset_from_core_section' method.
+ * Makefile.in (frv-linux-tdep.o): Update dependencies.
+ * solib-frv.c (frv_current_sos): Relocate main executable after
+ loading core file.
+ (frv_clear_solib): Clean up space associated with
+ `main_executable_lm_info'.
+ * config/frv/frv.mt (TDEPFILES): Add corelow.o to this list.
+
2006-03-15 Daniel Jacobowitz <dan@codesourcery.com>
* Makefile.in (mips_linux_tdep_h): New.
Boston, MA 02110-1301, USA. */
#include "defs.h"
+#include "gdbcore.h"
#include "target.h"
#include "frame.h"
#include "osabi.h"
+#include "regcache.h"
#include "elf-bfd.h"
#include "elf/frv.h"
#include "frv-tdep.h"
#include "trad-frame.h"
#include "frame-unwind.h"
+#include "regset.h"
+#include "gdb_string.h"
/* Define the size (in bytes) of an FR-V instruction. */
static const int frv_instr_size = 4;
return NULL;
}
+\f
+/* The FRV kernel defines ELF_NGREG as 46. We add 2 in order to include
+ the loadmap addresses in the register set. (See below for more info.) */
+#define FRV_ELF_NGREG (46 + 2)
+typedef unsigned char frv_elf_greg_t[4];
+typedef struct { frv_elf_greg_t reg[FRV_ELF_NGREG]; } frv_elf_gregset_t;
+
+typedef unsigned char frv_elf_fpreg_t[4];
+typedef struct
+{
+ frv_elf_fpreg_t fr[64];
+ frv_elf_fpreg_t fner[2];
+ frv_elf_fpreg_t msr[2];
+ frv_elf_fpreg_t acc[8];
+ unsigned char accg[8];
+ frv_elf_fpreg_t fsr[1];
+} frv_elf_fpregset_t;
+
+/* Constants for accessing elements of frv_elf_gregset_t. */
+
+#define FRV_PT_PSR 0
+#define FRV_PT_ISR 1
+#define FRV_PT_CCR 2
+#define FRV_PT_CCCR 3
+#define FRV_PT_LR 4
+#define FRV_PT_LCR 5
+#define FRV_PT_PC 6
+#define FRV_PT_GNER0 10
+#define FRV_PT_GNER1 11
+#define FRV_PT_IACC0H 12
+#define FRV_PT_IACC0L 13
+
+/* Note: Only 32 of the GRs will be found in the corefile. */
+#define FRV_PT_GR(j) ( 14 + (j)) /* GRj for 0<=j<=63. */
+
+#define FRV_PT_TBR FRV_PT_GR(0) /* gr0 is always 0, so TBR is stuffed
+ there. */
+
+/* Technically, the loadmap addresses are not part of `pr_reg' as
+ found in the elf_prstatus struct. The fields which communicate the
+ loadmap address appear (by design) immediately after `pr_reg'
+ though, and the BFD function elf32_frv_grok_prstatus() has been
+ implemented to include these fields in the register section that it
+ extracts from the core file. So, for our purposes, they may be
+ viewed as registers. */
+
+#define FRV_PT_EXEC_FDPIC_LOADMAP 46
+#define FRV_PT_INTERP_FDPIC_LOADMAP 47
+
+
+/* Unpack an frv_elf_gregset_t into GDB's register cache. */
+
+static void
+frv_linux_supply_gregset (const struct regset *regset,
+ struct regcache *regcache,
+ int regnum, const void *gregs, size_t len)
+{
+ int regi;
+ char zerobuf[MAX_REGISTER_SIZE];
+ const frv_elf_gregset_t *gregsetp = gregs;
+
+ memset (zerobuf, 0, MAX_REGISTER_SIZE);
+
+ /* gr0 always contains 0. Also, the kernel passes the TBR value in
+ this slot. */
+ regcache_raw_supply (regcache, first_gpr_regnum, zerobuf);
+
+ for (regi = first_gpr_regnum + 1; regi <= last_gpr_regnum; regi++)
+ {
+ if (regi >= first_gpr_regnum + 32)
+ regcache_raw_supply (regcache, regi, zerobuf);
+ else
+ regcache_raw_supply (regcache, regi,
+ gregsetp->reg[FRV_PT_GR (regi - first_gpr_regnum)]);
+ }
+
+ regcache_raw_supply (regcache, pc_regnum, gregsetp->reg[FRV_PT_PC]);
+ regcache_raw_supply (regcache, psr_regnum, gregsetp->reg[FRV_PT_PSR]);
+ regcache_raw_supply (regcache, ccr_regnum, gregsetp->reg[FRV_PT_CCR]);
+ regcache_raw_supply (regcache, cccr_regnum, gregsetp->reg[FRV_PT_CCCR]);
+ regcache_raw_supply (regcache, lr_regnum, gregsetp->reg[FRV_PT_LR]);
+ regcache_raw_supply (regcache, lcr_regnum, gregsetp->reg[FRV_PT_LCR]);
+ regcache_raw_supply (regcache, gner0_regnum, gregsetp->reg[FRV_PT_GNER0]);
+ regcache_raw_supply (regcache, gner1_regnum, gregsetp->reg[FRV_PT_GNER1]);
+ regcache_raw_supply (regcache, tbr_regnum, gregsetp->reg[FRV_PT_TBR]);
+ regcache_raw_supply (regcache, fdpic_loadmap_exec_regnum,
+ gregsetp->reg[FRV_PT_EXEC_FDPIC_LOADMAP]);
+ regcache_raw_supply (regcache, fdpic_loadmap_interp_regnum,
+ gregsetp->reg[FRV_PT_INTERP_FDPIC_LOADMAP]);
+}
+
+/* Unpack an frv_elf_fpregset_t into GDB's register cache. */
+
+static void
+frv_linux_supply_fpregset (const struct regset *regset,
+ struct regcache *regcache,
+ int regnum, const void *gregs, size_t len)
+{
+ int regi;
+ const frv_elf_fpregset_t *fpregsetp = gregs;
+
+ for (regi = first_fpr_regnum; regi <= last_fpr_regnum; regi++)
+ regcache_raw_supply (regcache, regi, fpregsetp->fr[regi - first_fpr_regnum]);
+
+ regcache_raw_supply (regcache, fner0_regnum, fpregsetp->fner[0]);
+ regcache_raw_supply (regcache, fner1_regnum, fpregsetp->fner[1]);
+
+ regcache_raw_supply (regcache, msr0_regnum, fpregsetp->msr[0]);
+ regcache_raw_supply (regcache, msr1_regnum, fpregsetp->msr[1]);
+
+ for (regi = acc0_regnum; regi <= acc7_regnum; regi++)
+ regcache_raw_supply (regcache, regi, fpregsetp->acc[regi - acc0_regnum]);
+
+ regcache_raw_supply (regcache, accg0123_regnum, fpregsetp->accg);
+ regcache_raw_supply (regcache, accg4567_regnum, fpregsetp->accg + 4);
+
+ regcache_raw_supply (regcache, fsr0_regnum, fpregsetp->fsr[0]);
+}
+
+/* FRV Linux register sets. */
+
+static struct regset frv_linux_gregset =
+{
+ NULL,
+ frv_linux_supply_gregset
+};
+
+static struct regset frv_linux_fpregset =
+{
+ NULL,
+ frv_linux_supply_fpregset
+};
+
+static const struct regset *
+frv_linux_regset_from_core_section (struct gdbarch *gdbarch,
+ const char *sect_name, size_t sect_size)
+{
+ if (strcmp (sect_name, ".reg") == 0
+ && sect_size >= sizeof (frv_elf_gregset_t))
+ return &frv_linux_gregset;
+
+ if (strcmp (sect_name, ".reg2") == 0
+ && sect_size >= sizeof (frv_elf_fpregset_t))
+ return &frv_linux_fpregset;
+
+ return NULL;
+}
+
+\f
static void
frv_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
/* Set the sigtramp frame sniffer. */
frame_unwind_append_sniffer (gdbarch, frv_linux_sigtramp_frame_sniffer);
+ set_gdbarch_regset_from_core_section (gdbarch,
+ frv_linux_regset_from_core_section);
}
static enum gdb_osabi
struct so_list *sos_head = NULL;
struct so_list **sos_next_ptr = &sos_head;
+ /* Make sure that the main executable has been relocated. This is
+ required in order to find the address of the global offset table,
+ which in turn is used to find the link map info. (See lm_base()
+ for details.)
+
+ Note that the relocation of the main executable is also performed
+ by SOLIB_CREATE_INFERIOR_HOOK(), however, in the case of core
+ files, this hook is called too late in order to be of benefit to
+ SOLIB_ADD. SOLIB_ADD eventually calls this this function,
+ frv_current_sos, and also precedes the call to
+ SOLIB_CREATE_INFERIOR_HOOK(). (See post_create_inferior() in
+ infcmd.c.) */
+ if (main_executable_lm_info == 0 && core_bfd != NULL)
+ frv_relocate_main_executable ();
+
+ /* Fetch the GOT corresponding to the main executable. */
mgot = main_got ();
/* Locate the address of the first link map struct. */
enable_break1_done = 0;
enable_break2_done = 0;
main_lm_addr = 0;
+ if (main_executable_lm_info != 0)
+ {
+ xfree (main_executable_lm_info->map);
+ xfree (main_executable_lm_info->dyn_syms);
+ xfree (main_executable_lm_info->dyn_relocs);
+ xfree (main_executable_lm_info);
+ main_executable_lm_info = 0;
+ }
}
static void
projects / external / binutils.git / commitdiff