diff options
Diffstat (limited to 'gdb/amd64-linux-tdep.c')
| -rw-r--r-- | gdb/amd64-linux-tdep.c | 149 |
1 files changed, 40 insertions, 109 deletions
diff --git a/gdb/amd64-linux-tdep.c b/gdb/amd64-linux-tdep.c index 9a1636a8998..edf37948b19 100644 --- a/gdb/amd64-linux-tdep.c +++ b/gdb/amd64-linux-tdep.c @@ -21,7 +21,7 @@ Boston, MA 02111-1307, USA. */ #include "defs.h" -#include "inferior.h" +#include "frame.h" #include "gdbcore.h" #include "regcache.h" #include "osabi.h" @@ -29,117 +29,42 @@ #include "gdb_string.h" #include "amd64-tdep.h" -#include "amd64-linux-tdep.h" - -/* Register indexes to 'struct user' come from <sys/reg.h>. */ - -#define USER_R15 0 -#define USER_R14 1 -#define USER_R13 2 -#define USER_R12 3 -#define USER_RBP 4 -#define USER_RBX 5 -#define USER_R11 6 -#define USER_R10 7 -#define USER_R9 8 -#define USER_R8 9 -#define USER_RAX 10 -#define USER_RCX 11 -#define USER_RDX 12 -#define USER_RSI 13 -#define USER_RDI 14 -#define USER_RIP 16 -#define USER_CS 17 -#define USER_EFLAGS 18 -#define USER_RSP 19 -#define USER_SS 20 -#define USER_DS 23 -#define USER_ES 24 -#define USER_FS 25 -#define USER_GS 26 +#include "solib-svr4.h" /* Mapping between the general-purpose registers in `struct user' - format and GDB's register array layout. */ + format and GDB's register cache layout. */ -static int user_to_gdb_regmap[] = +/* From <sys/reg.h>. */ +static int amd64_linux_gregset_reg_offset[] = { - USER_RAX, USER_RBX, USER_RCX, USER_RDX, - USER_RSI, USER_RDI, USER_RBP, USER_RSP, - USER_R8, USER_R9, USER_R10, USER_R11, - USER_R12, USER_R13, USER_R14, USER_R15, - USER_RIP, USER_EFLAGS, - USER_CS, USER_SS, - USER_DS, USER_ES, USER_FS, USER_GS + 10 * 8, /* %rax */ + 5 * 8, /* %rbx */ + 11 * 8, /* %rcx */ + 12 * 8, /* %rdx */ + 13 * 8, /* %rsi */ + 14 * 8, /* %rdi */ + 4 * 8, /* %rbp */ + 19 * 8, /* %rsp */ + 9 * 8, /* %r8 ... */ + 8 * 8, + 7 * 8, + 6 * 8, + 3 * 8, + 2 * 8, + 1 * 8, + 0 * 8, /* ... %r15 */ + 16 * 8, /* %rip */ + 18 * 8, /* %eflags */ + 17 * 8, /* %cs */ + 20 * 8, /* %ss */ + 23 * 8, /* %ds */ + 24 * 8, /* %es */ + 25 * 8, /* %fs */ + 26 * 8 /* %gs */ }; + -/* Fill GDB's register array with the general-purpose register values - in *GREGSETP. */ - -void -amd64_linux_supply_gregset (char *regp) -{ - int i; - - for (i = 0; i < AMD64_NUM_GREGS; i++) - supply_register (i, regp + (user_to_gdb_regmap[i] * 8)); -} - -/* Fill register REGNO (if it is a general-purpose register) in - *GREGSETPS with the value in GDB's register array. If REGNO is -1, - do this for all registers. */ - -void -amd64_linux_fill_gregset (char *regp, int regno) -{ - int i; - - for (i = 0; i < AMD64_NUM_GREGS; i++) - if (regno == -1 || regno == i) - regcache_collect (i, regp + (user_to_gdb_regmap[i] * 8)); -} - -/* The register sets used in GNU/Linux ELF core-dumps are identical to - the register sets used by `ptrace'. The corresponding types are - `elf_gregset_t' for the general-purpose registers (with - `elf_greg_t' the type of a single GP register) and `elf_fpregset_t' - for the floating-point registers. */ - -static void -fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, - int which, CORE_ADDR ignore) -{ - switch (which) - { - case 0: /* Integer registers. */ - if (core_reg_size != 216) - warning ("Wrong size register set in core file."); - else - amd64_linux_supply_gregset (core_reg_sect); - break; - - case 2: /* Floating point registers. */ - case 3: /* "Extended" floating point registers. This is gdb-speak - for SSE/SSE2. */ - if (core_reg_size != 512) - warning ("Wrong size XMM register set in core file."); - else - amd64_supply_fxsave (current_regcache, -1, core_reg_sect); - break; - - default: - /* Don't know what kind of register request this is; just ignore it. */ - break; - } -} - -static struct core_fns amd64_core_fns = -{ - bfd_target_elf_flavour, /* core_flavour */ - default_check_format, /* check_format */ - default_core_sniffer, /* core_sniffer */ - fetch_core_registers, /* core_read_registers */ - NULL /* next */ -}; +/* Support for signal handlers. */ #define LINUX_SIGTRAMP_INSN0 0x48 /* mov $NNNNNNNN, %rax */ #define LINUX_SIGTRAMP_OFFSET0 0 @@ -271,13 +196,21 @@ static void amd64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + + tdep->gregset_reg_offset = amd64_linux_gregset_reg_offset; + tdep->gregset_num_regs = ARRAY_SIZE (amd64_linux_gregset_reg_offset); + tdep->sizeof_gregset = 27 * 8; + amd64_init_abi (info, gdbarch); set_gdbarch_pc_in_sigtramp (gdbarch, amd64_linux_pc_in_sigtramp); - tdep->sigcontext_addr = amd64_linux_sigcontext_addr; tdep->sc_reg_offset = amd64_linux_sc_reg_offset; tdep->sc_num_regs = ARRAY_SIZE (amd64_linux_sc_reg_offset); + + /* GNU/Linux uses SVR4-style shared libraries. */ + set_solib_svr4_fetch_link_map_offsets + (gdbarch, svr4_lp64_fetch_link_map_offsets); } @@ -287,8 +220,6 @@ extern void _initialize_amd64_linux_tdep (void); void _initialize_amd64_linux_tdep (void) { - add_core_fns (&amd64_core_fns); - gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64, GDB_OSABI_LINUX, amd64_linux_init_abi); } |