X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Farch-utils.c;h=7df55705c25748ec4e1719f0694c53b8f6d346a6;hb=c6ef89f56b506f7279d98fad13360bce30c06022;hp=92e310172b960282a19645974013b7605f8dcdc0;hpb=b5914469f9dd6b332ed51eea9b5954bd12375cd7;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/arch-utils.c b/gdb/arch-utils.c index 92e310172b..7df55705c2 100644 --- a/gdb/arch-utils.c +++ b/gdb/arch-utils.c @@ -1,7 +1,6 @@ /* Dynamic architecture support for GDB, the GNU debugger. - Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, - 2008, 2009, 2010, 2011 Free Software Foundation, Inc. + Copyright (C) 1998-2015 Free Software Foundation, Inc. This file is part of GDB. @@ -24,14 +23,15 @@ #include "buildsym.h" #include "gdbcmd.h" #include "inferior.h" /* enum CALL_DUMMY_LOCATION et al. */ -#include "gdb_string.h" +#include "infrun.h" #include "regcache.h" -#include "gdb_assert.h" #include "sim-regno.h" #include "gdbcore.h" #include "osabi.h" #include "target-descriptions.h" #include "objfiles.h" +#include "language.h" +#include "symtab.h" #include "version.h" @@ -86,7 +86,7 @@ displaced_step_at_entry_point (struct gdbarch *gdbarch) We don't want displaced stepping to interfere with those breakpoints, so leave space. */ gdbarch_breakpoint_from_pc (gdbarch, &addr, &bp_len); - addr += bp_len * 3; + addr += bp_len * 2; return addr; } @@ -121,13 +121,13 @@ generic_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc) int generic_in_solib_return_trampoline (struct gdbarch *gdbarch, - CORE_ADDR pc, char *name) + CORE_ADDR pc, const char *name) { return 0; } int -generic_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc) +generic_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc) { return 0; } @@ -168,17 +168,35 @@ no_op_reg_to_regnum (struct gdbarch *gdbarch, int reg) } void -default_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym) +default_coff_make_msymbol_special (int val, struct minimal_symbol *msym) { return; } +/* See arch-utils.h. */ + void -default_coff_make_msymbol_special (int val, struct minimal_symbol *msym) +default_make_symbol_special (struct symbol *sym, struct objfile *objfile) { return; } +/* See arch-utils.h. */ + +CORE_ADDR +default_adjust_dwarf2_addr (CORE_ADDR pc) +{ + return pc; +} + +/* See arch-utils.h. */ + +CORE_ADDR +default_adjust_dwarf2_line (CORE_ADDR addr, int rel) +{ + return addr; +} + int cannot_register_not (struct gdbarch *gdbarch, int regnum) { @@ -244,15 +262,23 @@ default_remote_register_number (struct gdbarch *gdbarch, return regno; } +/* See arch-utils.h. */ + +int +default_vsyscall_range (struct gdbarch *gdbarch, struct mem_range *range) +{ + return 0; +} + /* Functions to manipulate the endianness of the target. */ -static int target_byte_order_user = BFD_ENDIAN_UNKNOWN; +static enum bfd_endian target_byte_order_user = BFD_ENDIAN_UNKNOWN; static const char endian_big[] = "big"; static const char endian_little[] = "little"; static const char endian_auto[] = "auto"; -static const char *endian_enum[] = +static const char *const endian_enum[] = { endian_big, endian_little, @@ -477,7 +503,7 @@ set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c) } /* Try to select a global architecture that matches "info". Return - non-zero if the attempt succeds. */ + non-zero if the attempt succeeds. */ int gdbarch_update_p (struct gdbarch_info info) { @@ -506,7 +532,7 @@ gdbarch_update_p (struct gdbarch_info info) /* If it is the same old architecture, accept the request (but don't swap anything). */ - if (new_gdbarch == target_gdbarch) + if (new_gdbarch == target_gdbarch ()) { if (gdbarch_debug) fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: " @@ -522,7 +548,7 @@ gdbarch_update_p (struct gdbarch_info info) "New architecture %s (%s) selected\n", host_address_to_string (new_gdbarch), gdbarch_bfd_arch_info (new_gdbarch)->printable_name); - deprecated_target_gdbarch_select_hack (new_gdbarch); + set_target_gdbarch (new_gdbarch); return 1; } @@ -556,7 +582,7 @@ set_gdbarch_from_file (bfd *abfd) if (gdbarch == NULL) error (_("Architecture of file not recognized.")); - deprecated_target_gdbarch_select_hack (gdbarch); + set_target_gdbarch (gdbarch); } /* Initialize the current architecture. Update the ``set @@ -577,7 +603,7 @@ static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC; static const bfd_target *default_bfd_vec; #endif -static int default_byte_order = BFD_ENDIAN_UNKNOWN; +static enum bfd_endian default_byte_order = BFD_ENDIAN_UNKNOWN; void initialize_current_architecture (void) @@ -635,7 +661,7 @@ initialize_current_architecture (void) chp = strchr (target_name, '-'); if (chp != NULL && chp - 2 >= target_name - && strncmp (chp - 2, "el", 2) == 0) + && startswith (chp - 2, "el")) default_byte_order = BFD_ENDIAN_LITTLE; } if (default_byte_order == BFD_ENDIAN_UNKNOWN) @@ -757,7 +783,7 @@ get_current_arch (void) if (has_stack_frames ()) return get_frame_arch (get_selected_frame (NULL)); else - return target_gdbarch; + return target_gdbarch (); } int @@ -769,8 +795,8 @@ default_has_shared_address_space (struct gdbarch *gdbarch) } int -default_fast_tracepoint_valid_at (struct gdbarch *gdbarch, - CORE_ADDR addr, int *isize, char **msg) +default_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, + char **msg) { /* We don't know if maybe the target has some way to do fast tracepoints that doesn't need gdbarch, so always say yes. */ @@ -794,7 +820,82 @@ default_gen_return_address (struct gdbarch *gdbarch, error (_("This architecture has no method to collect a return address.")); } -/* */ +int +default_return_in_first_hidden_param_p (struct gdbarch *gdbarch, + struct type *type) +{ + /* Usually, the return value's address is stored the in the "first hidden" + parameter if the return value should be passed by reference, as + specified in ABI. */ + return language_pass_by_reference (type); +} + +int default_insn_is_call (struct gdbarch *gdbarch, CORE_ADDR addr) +{ + return 0; +} + +int default_insn_is_ret (struct gdbarch *gdbarch, CORE_ADDR addr) +{ + return 0; +} + +int default_insn_is_jump (struct gdbarch *gdbarch, CORE_ADDR addr) +{ + return 0; +} + +void +default_skip_permanent_breakpoint (struct regcache *regcache) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + CORE_ADDR current_pc = regcache_read_pc (regcache); + const gdb_byte *bp_insn; + int bp_len; + + bp_insn = gdbarch_breakpoint_from_pc (gdbarch, ¤t_pc, &bp_len); + current_pc += bp_len; + regcache_write_pc (regcache, current_pc); +} + +CORE_ADDR +default_infcall_mmap (CORE_ADDR size, unsigned prot) +{ + error (_("This target does not support inferior memory allocation by mmap.")); +} + +void +default_infcall_munmap (CORE_ADDR addr, CORE_ADDR size) +{ + /* Memory reserved by inferior mmap is kept leaked. */ +} + +/* -mcmodel=large is used so that no GOT (Global Offset Table) is needed to be + created in inferior memory by GDB (normally it is set by ld.so). */ + +char * +default_gcc_target_options (struct gdbarch *gdbarch) +{ + return xstrprintf ("-m%d%s", gdbarch_ptr_bit (gdbarch), + gdbarch_ptr_bit (gdbarch) == 64 ? " -mcmodel=large" : ""); +} + +/* gdbarch gnu_triplet_regexp method. */ + +const char * +default_gnu_triplet_regexp (struct gdbarch *gdbarch) +{ + return gdbarch_bfd_arch_info (gdbarch)->arch_name; +} + +/* Default method for gdbarch_addressable_memory_unit_size. By default, a memory byte has + a size of 1 octet. */ + +int +default_addressable_memory_unit_size (struct gdbarch *gdbarch) +{ + return 1; +} /* -Wmissing-prototypes */ extern initialize_file_ftype _initialize_gdbarch_utils;