/* Target-dependent code for the S+core architecture, for GDB,
the GNU Debugger.
- Copyright (C) 2006-2013 Free Software Foundation, Inc.
+ Copyright (C) 2006-2014 Free Software Foundation, Inc.
Contributed by Qinwei (qinwei@sunnorth.com.cn)
Contributed by Ching-Peng Lin (cplin@sunplus.com)
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include "gdb_assert.h"
#include "inferior.h"
#include "symtab.h"
#include "objfiles.h"
}
static inst_t *
-score7_fetch_inst (struct gdbarch *gdbarch, CORE_ADDR addr, char *memblock)
+score7_fetch_inst (struct gdbarch *gdbarch, CORE_ADDR addr, gdb_byte *memblock)
{
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
static inst_t inst = { 0, 0, 0 };
- char buf[SCORE_INSTLEN] = { 0 };
+ gdb_byte buf[SCORE_INSTLEN] = { 0 };
int big;
int ret;
return 0;
}
-static char *
+static gdb_byte *
score7_malloc_and_get_memblock (CORE_ADDR addr, CORE_ADDR size)
{
int ret;
- char *memblock = NULL;
+ gdb_byte *memblock = NULL;
if (size < 0)
{
else if (size == 0)
return NULL;
- memblock = (char *) xmalloc (size);
+ memblock = xmalloc (size);
memset (memblock, 0, size);
ret = target_read_memory (addr & ~0x3, memblock, size);
if (ret)
}
static void
-score7_free_memblock (char *memblock)
+score7_free_memblock (gdb_byte *memblock)
{
xfree (memblock);
}
static void
-score7_adjust_memblock_ptr (char **memblock, CORE_ADDR prev_pc,
+score7_adjust_memblock_ptr (gdb_byte **memblock, CORE_ADDR prev_pc,
CORE_ADDR cur_pc)
{
if (prev_pc == -1)
int fp_offset_p = 0;
int inst_len = 0;
- char *memblock = NULL;
- char *memblock_ptr = NULL;
+ gdb_byte *memblock = NULL;
+ gdb_byte *memblock_ptr = NULL;
CORE_ADDR prev_pc = -1;
/* Allocate MEMBLOCK if PC - STARTADDR > 0. */
return &score_prologue_frame_base;
}
-/* Core file support (dirty hack)
-
- The core file MUST be generated by GNU/Linux on S+core. */
+/* Core file support. */
+
+static const struct regcache_map_entry score7_linux_gregmap[] =
+ {
+ /* FIXME: According to the current Linux kernel, r0 is preceded by
+ 9 rather than 7 words. */
+ { 7, REGCACHE_MAP_SKIP, 4 },
+ { 32, 0, 4 }, /* r0 ... r31 */
+ { 1, 55, 4 }, /* CEL */
+ { 1, 54, 4 }, /* CEH */
+ { 1, 53, 4 }, /* sr0, i.e. cnt or COUNTER */
+ { 1, 52, 4 }, /* sr1, i.e. lcr or LDCR */
+ { 1, 51, 4 }, /* sr2, i.e. scr or STCR */
+ { 1, 49, 4 }, /* PC (same slot as EPC) */
+ { 1, 38, 4 }, /* EMA */
+ { 1, 32, 4 }, /* PSR */
+ { 1, 34, 4 }, /* ECR */
+ { 1, 33, 4 }, /* COND */
+ { 0 }
+ };
+
+#define SCORE7_LINUX_EPC_OFFSET (44 * 4)
+#define SCORE7_LINUX_SIZEOF_GREGSET (49 * 4)
static void
score7_linux_supply_gregset(const struct regset *regset,
- struct regcache *regcache,
- int regnum, const void *gregs_buf, size_t len)
+ struct regcache *regcache,
+ int regnum, const void *buf,
+ size_t size)
{
- int regno;
- elf_gregset_t *gregs;
-
- gdb_assert (regset != NULL);
- gdb_assert ((regcache != NULL) && (gregs_buf != NULL));
-
- gregs = (elf_gregset_t *) gregs_buf;
-
- for (regno = 0; regno < 32; regno++)
- if (regnum == -1 || regnum == regno)
- regcache_raw_supply (regcache, regno, gregs->regs + regno);
+ regcache_supply_regset (regset, regcache, regnum, buf, size);
+
+ /* Supply the EPC from the same slot as the PC. Note that the
+ collect function will store the PC in that slot. */
+ if ((regnum == -1 || regnum == SCORE_EPC_REGNUM)
+ && size >= SCORE7_LINUX_EPC_OFFSET + 4)
+ regcache_raw_supply (regcache, SCORE_EPC_REGNUM,
+ (const gdb_byte *) buf
+ + SCORE7_LINUX_EPC_OFFSET);
+}
+static const struct regset score7_linux_gregset =
{
- struct sreg {
- int regnum;
- void *buf;
- } sregs [] = {
- { 55, &(gregs->cel) }, /* CEL */
- { 54, &(gregs->ceh) }, /* CEH */
- { 53, &(gregs->sr0) }, /* sr0, i.e. cnt or COUNTER */
- { 52, &(gregs->sr1) }, /* sr1, i.e. lcr or LDCR */
- { 51, &(gregs->sr1) }, /* sr2, i.e. scr or STCR */
-
- /* Exception occured at this address, exactly the PC we want */
- { 49, &(gregs->cp0_epc) }, /* PC */
-
- { 38, &(gregs->cp0_ema) }, /* EMA */
- { 37, &(gregs->cp0_epc) }, /* EPC */
- { 34, &(gregs->cp0_ecr) }, /* ECR */
- { 33, &(gregs->cp0_condition) }, /* COND */
- { 32, &(gregs->cp0_psr) }, /* PSR */
- };
-
- for (regno = 0; regno < sizeof(sregs)/sizeof(sregs[0]); regno++)
- if (regnum == -1 || regnum == sregs[regno].regnum)
- regcache_raw_supply (regcache,
- sregs[regno].regnum, sregs[regno].buf);
- }
-}
+ score7_linux_gregmap,
+ score7_linux_supply_gregset,
+ regcache_collect_regset
+ };
-/* Return the appropriate register set from the core section identified
- by SECT_NAME and SECT_SIZE. */
+/* Iterate over core file register note sections. */
-static const struct regset *
-score7_linux_regset_from_core_section(struct gdbarch *gdbarch,
- const char *sect_name, size_t sect_size)
+static void
+score7_linux_iterate_over_regset_sections (struct gdbarch *gdbarch,
+ iterate_over_regset_sections_cb *cb,
+ void *cb_data,
+ const struct regcache *regcache)
{
- struct gdbarch_tdep *tdep;
-
- gdb_assert (gdbarch != NULL);
- gdb_assert (sect_name != NULL);
-
- tdep = gdbarch_tdep (gdbarch);
-
- if (strcmp(sect_name, ".reg") == 0 && sect_size == sizeof(elf_gregset_t))
- {
- if (tdep->gregset == NULL)
- tdep->gregset = regset_alloc (gdbarch,
- score7_linux_supply_gregset, NULL);
- return tdep->gregset;
- }
-
- return NULL;
+ cb (".reg", SCORE7_LINUX_SIZEOF_GREGSET, &score7_linux_gregset,
+ NULL, cb_data);
}
static struct gdbarch *
score_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
struct gdbarch *gdbarch;
- struct gdbarch_tdep *tdep;
target_mach = info.bfd_arch_info->mach;
arches = gdbarch_list_lookup_by_info (arches, &info);
{
return (arches->gdbarch);
}
- tdep = xcalloc(1, sizeof(struct gdbarch_tdep));
- gdbarch = gdbarch_alloc (&info, tdep);
+ gdbarch = gdbarch_alloc (&info, NULL);
set_gdbarch_short_bit (gdbarch, 16);
set_gdbarch_int_bit (gdbarch, 32);
set_gdbarch_register_name (gdbarch, score7_register_name);
set_gdbarch_num_regs (gdbarch, SCORE7_NUM_REGS);
/* Core file support. */
- set_gdbarch_regset_from_core_section (gdbarch,
- score7_linux_regset_from_core_section);
+ set_gdbarch_iterate_over_regset_sections
+ (gdbarch, score7_linux_iterate_over_regset_sections);
break;
case bfd_mach_score3:
projects / platform / upstream / binutils.git / blobdiff