X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Farch-utils.c;h=776dabc79fcc6318e2856916e944f695b05b8b47;hb=d1a760cbb796b62f18ff6b81a189fd261809ef74;hp=a2e76deb876bed1735e8dec143c9dc31cab1fd6e;hpb=ae9bb220caeb7d51fce6f54a182477247d8e3ac3;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/arch-utils.c b/gdb/arch-utils.c index a2e76deb87..776dabc79f 100644 --- a/gdb/arch-utils.c +++ b/gdb/arch-utils.c @@ -1,6 +1,6 @@ /* Dynamic architecture support for GDB, the GNU debugger. - Copyright (C) 1998-2014 Free Software Foundation, Inc. + Copyright (C) 1998-2016 Free Software Foundation, Inc. This file is part of GDB. @@ -31,6 +31,7 @@ #include "target-descriptions.h" #include "objfiles.h" #include "language.h" +#include "symtab.h" #include "version.h" @@ -43,7 +44,7 @@ simple_displaced_step_copy_insn (struct gdbarch *gdbarch, struct regcache *regs) { size_t len = gdbarch_max_insn_length (gdbarch); - gdb_byte *buf = xmalloc (len); + gdb_byte *buf = (gdb_byte *) xmalloc (len); read_memory (from, buf, len); write_memory (to, buf, len); @@ -126,11 +127,18 @@ generic_in_solib_return_trampoline (struct gdbarch *gdbarch, } 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; } +int +default_code_of_frame_writable (struct gdbarch *gdbarch, + struct frame_info *frame) +{ + return 1; +} + /* Helper functions for gdbarch_inner_than */ int @@ -167,17 +175,35 @@ 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) { @@ -215,6 +241,34 @@ legacy_virtual_frame_pointer (struct gdbarch *gdbarch, *frame_offset = 0; } +/* Return a floating-point format for a floating-point variable of + length LEN in bits. If non-NULL, NAME is the name of its type. + If no suitable type is found, return NULL. */ + +const struct floatformat ** +default_floatformat_for_type (struct gdbarch *gdbarch, + const char *name, int len) +{ + const struct floatformat **format = NULL; + + if (len == gdbarch_half_bit (gdbarch)) + format = gdbarch_half_format (gdbarch); + else if (len == gdbarch_float_bit (gdbarch)) + format = gdbarch_float_format (gdbarch); + else if (len == gdbarch_double_bit (gdbarch)) + format = gdbarch_double_format (gdbarch); + else if (len == gdbarch_long_double_bit (gdbarch)) + format = gdbarch_long_double_format (gdbarch); + /* On i386 the 'long double' type takes 96 bits, + while the real number of used bits is only 80, + both in processor and in memory. + The code below accepts the real bit size. */ + else if (gdbarch_long_double_format (gdbarch) != NULL + && len == gdbarch_long_double_format (gdbarch)[0]->totalsize) + format = gdbarch_long_double_format (gdbarch); + + return format; +} int generic_convert_register_p (struct gdbarch *gdbarch, int regnum, @@ -254,7 +308,7 @@ default_vsyscall_range (struct gdbarch *gdbarch, struct mem_range *range) /* 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"; @@ -584,7 +638,7 @@ 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) @@ -642,7 +696,7 @@ 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) @@ -665,7 +719,7 @@ initialize_current_architecture (void) /* Append ``auto''. */ int nr; for (nr = 0; arches[nr] != NULL; nr++); - arches = xrealloc (arches, sizeof (char*) * (nr + 2)); + arches = XRESIZEVEC (const char *, arches, nr + 2); arches[nr + 0] = "auto"; arches[nr + 1] = NULL; add_setshow_enum_cmd ("architecture", class_support, @@ -776,8 +830,8 @@ 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. */ @@ -831,14 +885,75 @@ 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); + 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; +} + +void +default_guess_tracepoint_registers (struct gdbarch *gdbarch, + struct regcache *regcache, + CORE_ADDR addr) +{ + int pc_regno = gdbarch_pc_regnum (gdbarch); + gdb_byte *regs; + + /* This guessing code below only works if the PC register isn't + a pseudo-register. The value of a pseudo-register isn't stored + in the (non-readonly) regcache -- instead it's recomputed + (probably from some other cached raw register) whenever the + register is read. In this case, a custom method implementation + should be used by the architecture. */ + if (pc_regno < 0 || pc_regno >= gdbarch_num_regs (gdbarch)) + return; + + regs = (gdb_byte *) alloca (register_size (gdbarch, pc_regno)); + store_unsigned_integer (regs, register_size (gdbarch, pc_regno), + gdbarch_byte_order (gdbarch), addr); + regcache_raw_supply (regcache, pc_regno, regs); +} + /* -Wmissing-prototypes */ extern initialize_file_ftype _initialize_gdbarch_utils;