/* Target-dependent code for GNU/Linux on MIPS processors.
- Copyright (C) 2001-2014 Free Software Foundation, Inc.
+ Copyright (C) 2001-2016 Free Software Foundation, Inc.
This file is part of GDB.
#include "solib-svr4.h"
#include "osabi.h"
#include "mips-tdep.h"
-#include <string.h>
-#include "gdb_assert.h"
#include "frame.h"
#include "regcache.h"
#include "trad-frame.h"
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
gdb_byte buf[MAX_REGISTER_SIZE];
store_signed_integer (buf, register_size (gdbarch, regnum), byte_order,
- extract_signed_integer (addr, 4, byte_order));
+ extract_signed_integer ((const gdb_byte *) addr, 4,
+ byte_order));
regcache_raw_supply (regcache, regnum, buf);
}
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
- gdb_assert (len == sizeof (mips_elf_gregset_t));
+ gdb_assert (len >= sizeof (mips_elf_gregset_t));
mips_supply_gregset (regcache, (const mips_elf_gregset_t *)gregs);
}
const struct regcache *regcache,
int regnum, void *gregs, size_t len)
{
- gdb_assert (len == sizeof (mips_elf_gregset_t));
+ gdb_assert (len >= sizeof (mips_elf_gregset_t));
mips_fill_gregset (regcache, (mips_elf_gregset_t *)gregs, regnum);
}
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
- gdb_assert (len == sizeof (mips_elf_fpregset_t));
+ gdb_assert (len >= sizeof (mips_elf_fpregset_t));
mips_supply_fpregset (regcache, (const mips_elf_fpregset_t *)gregs);
}
const struct regcache *regcache,
int regnum, void *gregs, size_t len)
{
- gdb_assert (len == sizeof (mips_elf_fpregset_t));
+ gdb_assert (len >= sizeof (mips_elf_fpregset_t));
mips_fill_fpregset (regcache, (mips_elf_fpregset_t *)gregs, regnum);
}
CORE_ADDR jb_addr;
struct gdbarch *gdbarch = get_frame_arch (frame);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- void *buf = alloca (gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT);
+ gdb_byte *buf
+ = (gdb_byte *) alloca (gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT);
int element_size = gdbarch_ptr_bit (gdbarch) == 32 ? 4 : 8;
jb_addr = get_frame_register_unsigned (frame, MIPS_A0_REGNUM);
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
- gdb_assert (len == sizeof (mips64_elf_gregset_t));
+ gdb_assert (len >= sizeof (mips64_elf_gregset_t));
mips64_supply_gregset (regcache, (const mips64_elf_gregset_t *)gregs);
}
val = extract_signed_integer (buf, register_size (gdbarch, regno),
byte_order);
dst = regp + regaddr;
- store_signed_integer (dst, 8, byte_order, val);
+ store_signed_integer ((gdb_byte *) dst, 8, byte_order, val);
}
}
const struct regcache *regcache,
int regnum, void *gregs, size_t len)
{
- gdb_assert (len == sizeof (mips64_elf_gregset_t));
+ gdb_assert (len >= sizeof (mips64_elf_gregset_t));
mips64_fill_gregset (regcache, (mips64_elf_gregset_t *)gregs, regnum);
}
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
- gdb_assert (len == sizeof (mips64_elf_fpregset_t));
+ gdb_assert (len >= sizeof (mips64_elf_fpregset_t));
mips64_supply_fpregset (regcache, (const mips64_elf_fpregset_t *)gregs);
}
const struct regcache *regcache,
int regnum, void *gregs, size_t len)
{
- gdb_assert (len == sizeof (mips64_elf_fpregset_t));
+ gdb_assert (len >= sizeof (mips64_elf_fpregset_t));
mips64_fill_fpregset (regcache, (mips64_elf_fpregset_t *)gregs, regnum);
}
-static const struct regset *
-mips_linux_regset_from_core_section (struct gdbarch *gdbarch,
- const char *sect_name, size_t sect_size)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- mips_elf_gregset_t gregset;
- mips_elf_fpregset_t fpregset;
- mips64_elf_gregset_t gregset64;
- mips64_elf_fpregset_t fpregset64;
+static const struct regset mips_linux_gregset =
+ {
+ NULL, mips_supply_gregset_wrapper, mips_fill_gregset_wrapper
+ };
+
+static const struct regset mips64_linux_gregset =
+ {
+ NULL, mips64_supply_gregset_wrapper, mips64_fill_gregset_wrapper
+ };
+
+static const struct regset mips_linux_fpregset =
+ {
+ NULL, mips_supply_fpregset_wrapper, mips_fill_fpregset_wrapper
+ };
- if (strcmp (sect_name, ".reg") == 0)
+static const struct regset mips64_linux_fpregset =
+ {
+ NULL, mips64_supply_fpregset_wrapper, mips64_fill_fpregset_wrapper
+ };
+
+static void
+mips_linux_iterate_over_regset_sections (struct gdbarch *gdbarch,
+ iterate_over_regset_sections_cb *cb,
+ void *cb_data,
+ const struct regcache *regcache)
+{
+ if (register_size (gdbarch, MIPS_ZERO_REGNUM) == 4)
{
- if (sect_size == sizeof (gregset))
- {
- if (tdep->gregset == NULL)
- tdep->gregset = regset_alloc (gdbarch,
- mips_supply_gregset_wrapper,
- mips_fill_gregset_wrapper);
- return tdep->gregset;
- }
- else if (sect_size == sizeof (gregset64))
- {
- if (tdep->gregset64 == NULL)
- tdep->gregset64 = regset_alloc (gdbarch,
- mips64_supply_gregset_wrapper,
- mips64_fill_gregset_wrapper);
- return tdep->gregset64;
- }
- else
- {
- warning (_("wrong size gregset struct in core file"));
- }
+ cb (".reg", sizeof (mips_elf_gregset_t), &mips_linux_gregset,
+ NULL, cb_data);
+ cb (".reg2", sizeof (mips_elf_fpregset_t), &mips_linux_fpregset,
+ NULL, cb_data);
}
- else if (strcmp (sect_name, ".reg2") == 0)
+ else
{
- if (sect_size == sizeof (fpregset))
- {
- if (tdep->fpregset == NULL)
- tdep->fpregset = regset_alloc (gdbarch,
- mips_supply_fpregset_wrapper,
- mips_fill_fpregset_wrapper);
- return tdep->fpregset;
- }
- else if (sect_size == sizeof (fpregset64))
- {
- if (tdep->fpregset64 == NULL)
- tdep->fpregset64 = regset_alloc (gdbarch,
- mips64_supply_fpregset_wrapper,
- mips64_fill_fpregset_wrapper);
- return tdep->fpregset64;
- }
- else
- {
- warning (_("wrong size fpregset struct in core file"));
- }
+ cb (".reg", sizeof (mips64_elf_gregset_t), &mips64_linux_gregset,
+ NULL, cb_data);
+ cb (".reg2", sizeof (mips64_elf_fpregset_t), &mips64_linux_fpregset,
+ NULL, cb_data);
}
-
- return NULL;
}
static const struct target_desc *
insn = extract_unsigned_integer (p + 4, 4, byte_order);
if (n64)
{
- /* daddu t7,ra */
- if (insn != 0x03e0782d)
+ /* 'daddu t7,ra' or 'or t7, ra, zero'*/
+ if (insn != 0x03e0782d || insn != 0x03e07825)
return 0;
+
}
else
{
- /* addu t7,ra */
- if (insn != 0x03e07821)
+ /* 'addu t7,ra' or 'or t7, ra, zero'*/
+ if (insn != 0x03e07821 || insn != 0x03e07825)
return 0;
+
}
insn = extract_unsigned_integer (p + 8, 4, byte_order);
static CORE_ADDR
mips_linux_skip_resolver (struct gdbarch *gdbarch, CORE_ADDR pc)
{
- struct minimal_symbol *resolver;
+ struct bound_minimal_symbol resolver;
resolver = lookup_minimal_symbol ("__dl_runtime_resolve", NULL, NULL);
- if (resolver && MSYMBOL_VALUE_ADDRESS (resolver) == pc)
+ if (resolver.minsym && BMSYMBOL_VALUE_ADDRESS (resolver) == pc)
return frame_unwind_caller_pc (get_current_frame ());
return glibc_skip_solib_resolver (gdbarch, pc);
struct trad_frame_cache *this_cache,
CORE_ADDR func);
+static int mips_linux_sigframe_validate (const struct tramp_frame *self,
+ struct frame_info *this_frame,
+ CORE_ADDR *pc);
+
+static int micromips_linux_sigframe_validate (const struct tramp_frame *self,
+ struct frame_info *this_frame,
+ CORE_ADDR *pc);
+
#define MIPS_NR_LINUX 4000
#define MIPS_NR_N64_LINUX 5000
#define MIPS_NR_N32_LINUX 6000
#define MIPS_INST_LI_V0_N32_RT_SIGRETURN 0x24020000 + MIPS_NR_N32_rt_sigreturn
#define MIPS_INST_SYSCALL 0x0000000c
+#define MICROMIPS_INST_LI_V0 0x3040
+#define MICROMIPS_INST_POOL32A 0x0000
+#define MICROMIPS_INST_SYSCALL 0x8b7c
+
static const struct tramp_frame mips_linux_o32_sigframe = {
SIGTRAMP_FRAME,
4,
{ MIPS_INST_SYSCALL, -1 },
{ TRAMP_SENTINEL_INSN, -1 }
},
- mips_linux_o32_sigframe_init
+ mips_linux_o32_sigframe_init,
+ mips_linux_sigframe_validate
};
static const struct tramp_frame mips_linux_o32_rt_sigframe = {
{ MIPS_INST_LI_V0_RT_SIGRETURN, -1 },
{ MIPS_INST_SYSCALL, -1 },
{ TRAMP_SENTINEL_INSN, -1 } },
- mips_linux_o32_sigframe_init
+ mips_linux_o32_sigframe_init,
+ mips_linux_sigframe_validate
};
static const struct tramp_frame mips_linux_n32_rt_sigframe = {
{ MIPS_INST_SYSCALL, -1 },
{ TRAMP_SENTINEL_INSN, -1 }
},
- mips_linux_n32n64_sigframe_init
+ mips_linux_n32n64_sigframe_init,
+ mips_linux_sigframe_validate
};
static const struct tramp_frame mips_linux_n64_rt_sigframe = {
{ MIPS_INST_SYSCALL, -1 },
{ TRAMP_SENTINEL_INSN, -1 }
},
- mips_linux_n32n64_sigframe_init
+ mips_linux_n32n64_sigframe_init,
+ mips_linux_sigframe_validate
+};
+
+static const struct tramp_frame micromips_linux_o32_sigframe = {
+ SIGTRAMP_FRAME,
+ 2,
+ {
+ { MICROMIPS_INST_LI_V0, -1 },
+ { MIPS_NR_sigreturn, -1 },
+ { MICROMIPS_INST_POOL32A, -1 },
+ { MICROMIPS_INST_SYSCALL, -1 },
+ { TRAMP_SENTINEL_INSN, -1 }
+ },
+ mips_linux_o32_sigframe_init,
+ micromips_linux_sigframe_validate
+};
+
+static const struct tramp_frame micromips_linux_o32_rt_sigframe = {
+ SIGTRAMP_FRAME,
+ 2,
+ {
+ { MICROMIPS_INST_LI_V0, -1 },
+ { MIPS_NR_rt_sigreturn, -1 },
+ { MICROMIPS_INST_POOL32A, -1 },
+ { MICROMIPS_INST_SYSCALL, -1 },
+ { TRAMP_SENTINEL_INSN, -1 }
+ },
+ mips_linux_o32_sigframe_init,
+ micromips_linux_sigframe_validate
+};
+
+static const struct tramp_frame micromips_linux_n32_rt_sigframe = {
+ SIGTRAMP_FRAME,
+ 2,
+ {
+ { MICROMIPS_INST_LI_V0, -1 },
+ { MIPS_NR_N32_rt_sigreturn, -1 },
+ { MICROMIPS_INST_POOL32A, -1 },
+ { MICROMIPS_INST_SYSCALL, -1 },
+ { TRAMP_SENTINEL_INSN, -1 }
+ },
+ mips_linux_n32n64_sigframe_init,
+ micromips_linux_sigframe_validate
+};
+
+static const struct tramp_frame micromips_linux_n64_rt_sigframe = {
+ SIGTRAMP_FRAME,
+ 2,
+ {
+ { MICROMIPS_INST_LI_V0, -1 },
+ { MIPS_NR_N64_rt_sigreturn, -1 },
+ { MICROMIPS_INST_POOL32A, -1 },
+ { MICROMIPS_INST_SYSCALL, -1 },
+ { TRAMP_SENTINEL_INSN, -1 }
+ },
+ mips_linux_n32n64_sigframe_init,
+ micromips_linux_sigframe_validate
};
/* *INDENT-OFF* */
const struct mips_regnum *regs = mips_regnum (gdbarch);
CORE_ADDR regs_base;
- if (self == &mips_linux_o32_sigframe)
+ if (self == &mips_linux_o32_sigframe
+ || self == µmips_linux_o32_sigframe)
sigcontext_base = frame_sp + SIGFRAME_SIGCONTEXT_OFFSET;
else
sigcontext_base = frame_sp + RTSIGFRAME_SIGCONTEXT_OFFSET;
CORE_ADDR sigcontext_base;
const struct mips_regnum *regs = mips_regnum (gdbarch);
- if (self == &mips_linux_n32_rt_sigframe)
+ if (self == &mips_linux_n32_rt_sigframe
+ || self == µmips_linux_n32_rt_sigframe)
sigcontext_base = frame_sp + N32_SIGFRAME_SIGCONTEXT_OFFSET;
else
sigcontext_base = frame_sp + N64_SIGFRAME_SIGCONTEXT_OFFSET;
trad_frame_set_id (this_cache, frame_id_build (frame_sp, func));
}
+/* Implement struct tramp_frame's "validate" method for standard MIPS code. */
+
+static int
+mips_linux_sigframe_validate (const struct tramp_frame *self,
+ struct frame_info *this_frame,
+ CORE_ADDR *pc)
+{
+ return mips_pc_is_mips (*pc);
+}
+
+/* Implement struct tramp_frame's "validate" method for microMIPS code. */
+
+static int
+micromips_linux_sigframe_validate (const struct tramp_frame *self,
+ struct frame_info *this_frame,
+ CORE_ADDR *pc)
+{
+ if (mips_pc_is_micromips (get_frame_arch (this_frame), *pc))
+ {
+ *pc = mips_unmake_compact_addr (*pc);
+ return 1;
+ }
+ else
+ return 0;
+}
+
/* Implement the "write_pc" gdbarch method. */
static void
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
enum mips_abi abi = mips_abi (gdbarch);
- struct tdesc_arch_data *tdesc_data = (void *) info.tdep_info;
+ struct tdesc_arch_data *tdesc_data
+ = (struct tdesc_arch_data *) info.tdep_info;
linux_init_abi (info, gdbarch);
mips_linux_get_longjmp_target);
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
+ tramp_frame_prepend_unwinder (gdbarch, µmips_linux_o32_sigframe);
+ tramp_frame_prepend_unwinder (gdbarch,
+ µmips_linux_o32_rt_sigframe);
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_o32_sigframe);
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_o32_rt_sigframe);
- set_xml_syscall_file_name ("syscalls/mips-o32-linux.xml");
+ set_xml_syscall_file_name (gdbarch, "syscalls/mips-o32-linux.xml");
break;
case MIPS_ABI_N32:
set_gdbarch_get_longjmp_target (gdbarch,
except that the quiet/signalling NaN bit is reversed (GDB
does not distinguish between quiet and signalling NaNs). */
set_gdbarch_long_double_format (gdbarch, floatformats_ia64_quad);
+ tramp_frame_prepend_unwinder (gdbarch,
+ µmips_linux_n32_rt_sigframe);
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_n32_rt_sigframe);
- set_xml_syscall_file_name ("syscalls/mips-n32-linux.xml");
+ set_xml_syscall_file_name (gdbarch, "syscalls/mips-n32-linux.xml");
break;
case MIPS_ABI_N64:
set_gdbarch_get_longjmp_target (gdbarch,
except that the quiet/signalling NaN bit is reversed (GDB
does not distinguish between quiet and signalling NaNs). */
set_gdbarch_long_double_format (gdbarch, floatformats_ia64_quad);
+ tramp_frame_prepend_unwinder (gdbarch,
+ µmips_linux_n64_rt_sigframe);
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_n64_rt_sigframe);
- set_xml_syscall_file_name ("syscalls/mips-n64-linux.xml");
+ set_xml_syscall_file_name (gdbarch, "syscalls/mips-n64-linux.xml");
break;
default:
break;
set_gdbarch_core_read_description (gdbarch,
mips_linux_core_read_description);
- set_gdbarch_regset_from_core_section (gdbarch,
- mips_linux_regset_from_core_section);
+ set_gdbarch_iterate_over_regset_sections
+ (gdbarch, mips_linux_iterate_over_regset_sections);
set_gdbarch_gdb_signal_from_target (gdbarch,
mips_gdb_signal_from_target);
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