diff options
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 4 | ||||
| -rw-r--r-- | gdb/x86-64-tdep.c | 173 |
2 files changed, 75 insertions, 102 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 5133746..a986042 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,9 @@ 2002-10-25 Mark Kettenis <kettenis@gnu.org> + * x86-64-tdep.c (x86_64_gdbarch_init): Make a bit more similar to + the version in i386-tdep.c. Move set_gdbarch_* calls out into... + (x86_64_init_abi): ...new function. + * Makefile.in (i386v-nat.o): Add $(i386_tdep_h). * i386v-nat.c: Include "i386-tdep.h". diff --git a/gdb/x86-64-tdep.c b/gdb/x86-64-tdep.c index 5f6dd3f..0ea9ac3 100644 --- a/gdb/x86-64-tdep.c +++ b/gdb/x86-64-tdep.c @@ -911,78 +911,16 @@ x86_64_breakpoint_from_pc (CORE_ADDR *pc, int *lenptr) return breakpoint; } -static struct gdbarch * -x86_64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) +static void +x86_64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { - struct gdbarch *gdbarch; - struct gdbarch_tdep *tdep; + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); int i, sum; - /* Find a candidate among the list of pre-declared architectures. */ - for (arches = gdbarch_list_lookup_by_info (arches, &info); - arches != NULL; - arches = gdbarch_list_lookup_by_info (arches->next, &info)) - { - switch (info.bfd_arch_info->mach) - { - case bfd_mach_x86_64: - case bfd_mach_x86_64_intel_syntax: - switch (gdbarch_bfd_arch_info (arches->gdbarch)->mach) - { - case bfd_mach_x86_64: - case bfd_mach_x86_64_intel_syntax: - return arches->gdbarch; - case bfd_mach_i386_i386: - case bfd_mach_i386_i8086: - case bfd_mach_i386_i386_intel_syntax: - break; - default: - internal_error (__FILE__, __LINE__, - "x86_64_gdbarch_init: unknown machine type"); - } - break; - case bfd_mach_i386_i386: - case bfd_mach_i386_i8086: - case bfd_mach_i386_i386_intel_syntax: - switch (gdbarch_bfd_arch_info (arches->gdbarch)->mach) - { - case bfd_mach_x86_64: - case bfd_mach_x86_64_intel_syntax: - break; - case bfd_mach_i386_i386: - case bfd_mach_i386_i8086: - case bfd_mach_i386_i386_intel_syntax: - return arches->gdbarch; - default: - internal_error (__FILE__, __LINE__, - "x86_64_gdbarch_init: unknown machine type"); - } - break; - default: - internal_error (__FILE__, __LINE__, - "x86_64_gdbarch_init: unknown machine type"); - } - } - - tdep = (struct gdbarch_tdep *) xmalloc (sizeof (struct gdbarch_tdep)); - gdbarch = gdbarch_alloc (&info, tdep); - - switch (info.bfd_arch_info->mach) - { - case bfd_mach_x86_64: - case bfd_mach_x86_64_intel_syntax: - tdep->num_xmm_regs = 16; - break; - case bfd_mach_i386_i386: - case bfd_mach_i386_i8086: - case bfd_mach_i386_i386_intel_syntax: - /* This is place for definition of i386 target vector. */ - break; - default: - internal_error (__FILE__, __LINE__, - "x86_64_gdbarch_init: unknown machine type"); - } + /* The x86_64 has 16 SSE registers. */ + tdep->num_xmm_regs = 16; + /* This is what all the fuss is about. */ set_gdbarch_long_bit (gdbarch, 64); set_gdbarch_long_long_bit (gdbarch, 64); set_gdbarch_ptr_bit (gdbarch, 64); @@ -996,8 +934,9 @@ x86_64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) set_gdbarch_max_register_raw_size (gdbarch, 16); set_gdbarch_register_byte (gdbarch, x86_64_register_byte); - /* Total amount of space needed to store our copies of the machine's register - (SIZEOF_GREGS + SIZEOF_FPU_REGS + SIZEOF_FPU_CTRL_REGS + SIZEOF_SSE_REGS) */ + /* Total amount of space needed to store our copies of the machine's + register (SIZEOF_GREGS + SIZEOF_FPU_REGS + SIZEOF_FPU_CTRL_REGS + + SIZEOF_SSE_REGS) */ for (i = 0, sum = 0; i < X86_64_NUM_REGS; i++) sum += x86_64_register_info_table[i].size; set_gdbarch_register_bytes (gdbarch, sum); @@ -1012,46 +951,45 @@ x86_64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) set_gdbarch_register_convert_to_raw (gdbarch, x86_64_register_convert_to_raw); -/* Register numbers of various important registers. */ - set_gdbarch_sp_regnum (gdbarch, 7); /* (rsp) Contains address of top of stack. */ - set_gdbarch_fp_regnum (gdbarch, 6); /* (rbp) */ - set_gdbarch_pc_regnum (gdbarch, 16); /* (rip) Contains program counter. */ - - set_gdbarch_fp0_regnum (gdbarch, X86_64_NUM_GREGS); /* First FPU floating-point register. */ + /* Register numbers of various important registers. */ + set_gdbarch_sp_regnum (gdbarch, 7); /* %rsp */ + set_gdbarch_fp_regnum (gdbarch, 6); /* %rbp */ + set_gdbarch_pc_regnum (gdbarch, 16); /* %rip */ + set_gdbarch_fp0_regnum (gdbarch, X86_64_NUM_GREGS); /* %st(0) */ set_gdbarch_read_fp (gdbarch, cfi_read_fp); -/* Discard from the stack the innermost frame, restoring all registers. */ + /* Discard from the stack the innermost frame, restoring all registers. */ set_gdbarch_pop_frame (gdbarch, x86_64_pop_frame); - /* FRAME_CHAIN takes a frame's nominal address and produces the frame's - chain-pointer. */ + /* FRAME_CHAIN takes a frame's nominal address and produces the + frame's chain-pointer. */ set_gdbarch_frame_chain (gdbarch, x86_64_linux_frame_chain); set_gdbarch_frameless_function_invocation (gdbarch, - x86_64_frameless_function_invocation); + x86_64_frameless_function_invocation); set_gdbarch_frame_saved_pc (gdbarch, x86_64_linux_frame_saved_pc); set_gdbarch_frame_args_address (gdbarch, default_frame_address); set_gdbarch_frame_locals_address (gdbarch, default_frame_address); -/* Return number of bytes at start of arglist that are not really args. */ + /* Return number of bytes at start of arglist that are not really args. */ set_gdbarch_frame_args_skip (gdbarch, 8); set_gdbarch_frame_init_saved_regs (gdbarch, x86_64_frame_init_saved_regs); -/* Frame pc initialization is handled by unwind informations. */ + /* Frame pc initialization is handled by unwind informations. */ set_gdbarch_init_frame_pc (gdbarch, x86_64_init_frame_pc); -/* Initialization of unwind informations. */ + /* Initialization of unwind informations. */ set_gdbarch_init_extra_frame_info (gdbarch, x86_64_init_extra_frame_info); -/* Getting saved registers is handled by unwind informations. */ + /* Getting saved registers is handled by unwind informations. */ set_gdbarch_get_saved_register (gdbarch, cfi_get_saved_register); set_gdbarch_frame_init_saved_regs (gdbarch, x86_64_frame_init_saved_regs); -/* Cons up virtual frame pointer for trace */ + /* Cons up virtual frame pointer for trace */ set_gdbarch_virtual_frame_pointer (gdbarch, cfi_virtual_frame_pointer); set_gdbarch_frame_chain_valid (gdbarch, file_frame_chain_valid); @@ -1073,34 +1011,34 @@ x86_64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) set_gdbarch_push_return_address (gdbarch, x86_64_push_return_address); set_gdbarch_push_arguments (gdbarch, x86_64_push_arguments); -/* Return number of args passed to a frame, no way to tell. */ + /* Return number of args passed to a frame, no way to tell. */ set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown); -/* Don't use default structure extract routine */ + /* Don't use default structure extract routine */ set_gdbarch_deprecated_extract_struct_value_address (gdbarch, 0); -/* If USE_STRUCT_CONVENTION retruns 0, then gdb uses STORE_RETURN_VALUE - and EXTRACT_RETURN_VALUE to store/fetch the functions return value. It is - the case when structure is returned in registers. */ + /* If USE_STRUCT_CONVENTION retruns 0, then gdb uses + STORE_RETURN_VALUE and EXTRACT_RETURN_VALUE to store/fetch the + functions return value. It is the case when structure is + returned in registers. */ set_gdbarch_use_struct_convention (gdbarch, x86_64_use_struct_convention); -/* Store the address of the place in which to copy the structure the - subroutine will return. This is called from call_function. */ + /* Store the address of the place in which to copy the structure the + subroutine will return. This is called from call_function. */ set_gdbarch_store_struct_return (gdbarch, x86_64_store_struct_return); -/* Extract from an array REGBUF containing the (raw) register state - a function return value of type TYPE, and copy that, in virtual format, - into VALBUF. */ + /* Extract from an array REGBUF containing the (raw) register state + a function return value of type TYPE, and copy that, in virtual + format, into VALBUF. */ set_gdbarch_deprecated_extract_return_value (gdbarch, x86_64_extract_return_value); -/* Write into the appropriate registers a function return value stored - in VALBUF of type TYPE, given in virtual format. */ + /* Write into the appropriate registers a function return value + stored in VALBUF of type TYPE, given in virtual format. */ set_gdbarch_deprecated_store_return_value (gdbarch, x86_64_store_return_value); - -/* Offset from address of function to start of its code. */ + /* Offset from address of function to start of its code. */ set_gdbarch_function_start_offset (gdbarch, 0); set_gdbarch_skip_prologue (gdbarch, x86_64_skip_prologue); @@ -1115,15 +1053,46 @@ x86_64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) set_gdbarch_in_solib_call_trampoline (gdbarch, in_plt_section); -/* Amount PC must be decremented by after a breakpoint. This is often the - number of bytes in BREAKPOINT but not always. */ + /* Amount PC must be decremented by after a breakpoint. This is + often the number of bytes in BREAKPOINT but not always. */ set_gdbarch_decr_pc_after_break (gdbarch, 1); -/* Use dwarf2 debug frame informations. */ + /* Use dwarf2 debug frame informations. */ set_gdbarch_dwarf2_build_frame_info (gdbarch, dwarf2_build_frame_info); set_gdbarch_dwarf2_reg_to_regnum (gdbarch, x86_64_dwarf2_reg_to_regnum); set_gdbarch_pc_in_sigtramp (gdbarch, x86_64_linux_in_sigtramp); +} + +static struct gdbarch * +x86_64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) +{ + struct gdbarch_tdep *tdep; + struct gdbarch *gdbarch; + enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; + + /* Try to determine the OS ABI of the object we're loading. */ + if (info.abfd != NULL) + osabi = gdbarch_lookup_osabi (info.abfd); + + /* Find a candidate among extant architectures. */ + for (arches = gdbarch_list_lookup_by_info (arches, &info); + arches != NULL; + arches = gdbarch_list_lookup_by_info (arches->next, &info)) + { + /* Make sure the OS ABI selection matches. */ + tdep = gdbarch_tdep (arches->gdbarch); + if (tdep && tdep->osabi == osabi) + return arches->gdbarch; + } + + /* Allocate space for the new architecture. */ + tdep = XMALLOC (struct gdbarch_tdep); + gdbarch = gdbarch_alloc (&info, tdep); + + tdep->osabi = osabi; + + x86_64_init_abi (info, gdbarch); return gdbarch; } |