-/* Target-dependent code for MIPS systems running NetBSD.
+/* Target-dependent code for NetBSD/mips.
+
Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
Contributed by Wasabi Systems, Inc.
#include "defs.h"
#include "gdbcore.h"
#include "regcache.h"
+#include "regset.h"
#include "target.h"
#include "value.h"
#include "osabi.h"
+#include "gdb_assert.h"
#include "gdb_string.h"
#include "nbsd-tdep.h"
#include "solib-svr4.h"
+/* Shorthand for some register numbers used below. */
+#define MIPS_PC_REGNUM MIPS_EMBED_PC_REGNUM
+#define MIPS_FP0_REGNUM MIPS_EMBED_FP0_REGNUM
+#define MIPS_FSR_REGNUM MIPS_EMBED_FP0_REGNUM + 32
+
+/* Core file support. */
+
+/* Number of registers in `struct reg' from <machine/reg.h>. */
+#define MIPSNBSD_NUM_GREGS 38
+
+/* Number of registers in `struct fpreg' from <machine/reg.h>. */
+#define MIPSNBSD_NUM_FPREGS 33
+
+/* Supply register REGNUM from the buffer specified by FPREGS and LEN
+ in the floating-point register set REGSET to register cache
+ REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
+
+static void
+mipsnbsd_supply_fpregset (const struct regset *regset,
+ struct regcache *regcache,
+ int regnum, const void *fpregs, size_t len)
+{
+ size_t regsize = mips_isa_regsize (get_regcache_arch (regcache));
+ const char *regs = fpregs;
+ int i;
+
+ gdb_assert (len >= MIPSNBSD_NUM_FPREGS * regsize);
+
+ for (i = MIPS_FP0_REGNUM; i <= MIPS_FSR_REGNUM; i++)
+ {
+ if (regnum == i || regnum == -1)
+ regcache_raw_supply (regcache, i,
+ regs + (i - MIPS_FP0_REGNUM) * regsize);
+ }
+}
+
+/* Supply register REGNUM from the buffer specified by GREGS and LEN
+ in the general-purpose register set REGSET to register cache
+ REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
+
+static void
+mipsnbsd_supply_gregset (const struct regset *regset,
+ struct regcache *regcache, int regnum,
+ const void *gregs, size_t len)
+{
+ size_t regsize = mips_isa_regsize (get_regcache_arch (regcache));
+ const char *regs = gregs;
+ int i;
+
+ gdb_assert (len >= MIPSNBSD_NUM_GREGS * regsize);
+
+ for (i = 0; i <= MIPS_PC_REGNUM; i++)
+ {
+ if (regnum == i || regnum == -1)
+ regcache_raw_supply (regcache, i, regs + i * regsize);
+ }
+
+ if (len >= (MIPSNBSD_NUM_GREGS + MIPSNBSD_NUM_FPREGS) * regsize)
+ {
+ regs += MIPSNBSD_NUM_GREGS * regsize;
+ len -= MIPSNBSD_NUM_GREGS * regsize;
+ mipsnbsd_supply_fpregset (regset, regcache, regnum, regs, len);
+ }
+}
+
+/* NetBSD/mips register sets. */
+
+static struct regset mipsnbsd_gregset =
+{
+ NULL,
+ mipsnbsd_supply_gregset
+};
+
+static struct regset mipsnbsd_fpregset =
+{
+ NULL,
+ mipsnbsd_supply_fpregset
+};
+
+/* Return the appropriate register set for the core section identified
+ by SECT_NAME and SECT_SIZE. */
+
+static const struct regset *
+mipsnbsd_regset_from_core_section (struct gdbarch *gdbarch,
+ const char *sect_name, size_t sect_size)
+{
+ size_t regsize = mips_isa_regsize (gdbarch);
+
+ if (strcmp (sect_name, ".reg") == 0
+ && sect_size >= MIPSNBSD_NUM_GREGS * regsize)
+ return &mipsnbsd_gregset;
+
+ if (strcmp (sect_name, ".reg2") == 0
+ && sect_size >= MIPSNBSD_NUM_FPREGS * regsize)
+ return &mipsnbsd_fpregset;
+
+ return NULL;
+}
+\f
+
/* Conveniently, GDB uses the same register numbering as the
ptrace register structure used by NetBSD/mips. */
fpregs + ((i - FP0_REGNUM) * mips_isa_regsize (current_gdbarch)));
}
-static void
-fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
- CORE_ADDR ignore)
-{
- char *regs, *fpregs;
-
- /* We get everything from one section. */
- if (which != 0)
- return;
-
- regs = core_reg_sect;
- fpregs = core_reg_sect + SIZEOF_STRUCT_REG;
-
- /* Integer registers. */
- mipsnbsd_supply_reg (regs, -1);
-
- /* Floating point registers. */
- mipsnbsd_supply_fpreg (fpregs, -1);
-}
-
-static void
-fetch_elfcore_registers (char *core_reg_sect, unsigned core_reg_size, int which,
- CORE_ADDR ignore)
-{
- switch (which)
- {
- case 0: /* Integer registers. */
- if (core_reg_size != SIZEOF_STRUCT_REG)
- warning ("Wrong size register set in core file.");
- else
- mipsnbsd_supply_reg (core_reg_sect, -1);
- break;
-
- case 2: /* Floating point registers. */
- if (core_reg_size != SIZEOF_STRUCT_FPREG)
- warning ("Wrong size register set in core file.");
- else
- mipsnbsd_supply_fpreg (core_reg_sect, -1);
- break;
-
- default:
- /* Don't know what kind of register request this is; just ignore it. */
- break;
- }
-}
-
-static struct core_fns mipsnbsd_core_fns =
-{
- bfd_target_unknown_flavour, /* core_flavour */
- default_check_format, /* check_format */
- default_core_sniffer, /* core_sniffer */
- fetch_core_registers, /* core_read_registers */
- NULL /* next */
-};
-
-static struct core_fns mipsnbsd_elfcore_fns =
-{
- bfd_target_elf_flavour, /* core_flavour */
- default_check_format, /* check_format */
- default_core_sniffer, /* core_sniffer */
- fetch_elfcore_registers, /* core_read_registers */
- NULL /* next */
-};
-
/* Under NetBSD/mips, signal handler invocations can be identified by the
designated code sequence that is used to return from a signal handler.
In particular, the return address of a signal handler points to the
mipsnbsd_init_abi (struct gdbarch_info info,
struct gdbarch *gdbarch)
{
+ set_gdbarch_regset_from_core_section
+ (gdbarch, mipsnbsd_regset_from_core_section);
+
set_gdbarch_get_longjmp_target (gdbarch, mipsnbsd_get_longjmp_target);
set_gdbarch_cannot_fetch_register (gdbarch, mipsnbsd_cannot_fetch_register);
mipsnbsd_ilp32_solib_svr4_fetch_link_map_offsets :
mipsnbsd_lp64_solib_svr4_fetch_link_map_offsets);
}
+\f
+
+static enum gdb_osabi
+mipsnbsd_core_osabi_sniffer (bfd *abfd)
+{
+ if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
+ return GDB_OSABI_NETBSD_ELF;
+
+ return GDB_OSABI_UNKNOWN;
+}
void
_initialize_mipsnbsd_tdep (void)
{
gdbarch_register_osabi (bfd_arch_mips, 0, GDB_OSABI_NETBSD_ELF,
mipsnbsd_init_abi);
-
- deprecated_add_core_fns (&mipsnbsd_core_fns);
- deprecated_add_core_fns (&mipsnbsd_elfcore_fns);
}
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