X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Farch-utils.c;h=a5d8a1c11b12a6ae579efabe376c72ed09b9f453;hb=79c4cb80ee21c7de2b2245d17a99f4295d9e0c40;hp=5d13a2dd1ad74413d4496c3f9d88a4e947f37242;hpb=8238d0bfe4d770d195cd52f15454835570a53b78;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/arch-utils.c b/gdb/arch-utils.c index 5d13a2dd1a..a5d8a1c11b 100644 --- a/gdb/arch-utils.c +++ b/gdb/arch-utils.c @@ -1,6 +1,6 @@ /* Dynamic architecture support for GDB, the GNU debugger. - Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, + Copyright 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. This file is part of GDB. @@ -22,72 +22,66 @@ #include "defs.h" -#if GDB_MULTI_ARCH #include "arch-utils.h" +#include "buildsym.h" #include "gdbcmd.h" #include "inferior.h" /* enum CALL_DUMMY_LOCATION et.al. */ -#else -/* Just include everything in sight so that the every old definition - of macro is visible. */ #include "gdb_string.h" -#include "symtab.h" -#include "frame.h" -#include "inferior.h" -#include "breakpoint.h" -#include "gdb_wait.h" -#include "gdbcore.h" -#include "gdbcmd.h" -#include "target.h" -#include "annotate.h" -#endif #include "regcache.h" #include "gdb_assert.h" +#include "sim-regno.h" + +#include "osabi.h" #include "version.h" #include "floatformat.h" -/* Use the program counter to determine the contents and size - of a breakpoint instruction. If no target-dependent macro - BREAKPOINT_FROM_PC has been defined to implement this function, - assume that the breakpoint doesn't depend on the PC, and - use the values of the BIG_BREAKPOINT and LITTLE_BREAKPOINT macros. - Return a pointer to a string of bytes that encode a breakpoint - instruction, stores the length of the string to *lenptr, - and optionally adjust the pc to point to the correct memory location - for inserting the breakpoint. */ - -const unsigned char * -legacy_breakpoint_from_pc (CORE_ADDR * pcptr, int *lenptr) -{ - /* {BIG_,LITTLE_}BREAKPOINT is the sequence of bytes we insert for a - breakpoint. On some machines, breakpoints are handled by the - target environment and we don't have to worry about them here. */ -#ifdef BIG_BREAKPOINT - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - { - static unsigned char big_break_insn[] = BIG_BREAKPOINT; - *lenptr = sizeof (big_break_insn); - return big_break_insn; - } -#endif -#ifdef LITTLE_BREAKPOINT - if (TARGET_BYTE_ORDER != BFD_ENDIAN_BIG) - { - static unsigned char little_break_insn[] = LITTLE_BREAKPOINT; - *lenptr = sizeof (little_break_insn); - return little_break_insn; - } -#endif -#ifdef BREAKPOINT - { - static unsigned char break_insn[] = BREAKPOINT; - *lenptr = sizeof (break_insn); - return break_insn; - } -#endif - *lenptr = 0; - return NULL; +/* Implementation of extract return value that grubs around in the + register cache. */ +void +legacy_extract_return_value (struct type *type, struct regcache *regcache, + void *valbuf) +{ + char *registers = deprecated_grub_regcache_for_registers (regcache); + bfd_byte *buf = valbuf; + DEPRECATED_EXTRACT_RETURN_VALUE (type, registers, buf); /* OK */ +} + +/* Implementation of store return value that grubs the register cache. + Takes a local copy of the buffer to avoid const problems. */ +void +legacy_store_return_value (struct type *type, struct regcache *regcache, + const void *buf) +{ + bfd_byte *b = alloca (TYPE_LENGTH (type)); + gdb_assert (regcache == current_regcache); + memcpy (b, buf, TYPE_LENGTH (type)); + DEPRECATED_STORE_RETURN_VALUE (type, b); +} + + +int +always_use_struct_convention (int gcc_p, struct type *value_type) +{ + return 1; +} + + +int +legacy_register_sim_regno (int regnum) +{ + /* Only makes sense to supply raw registers. */ + gdb_assert (regnum >= 0 && regnum < NUM_REGS); + /* NOTE: cagney/2002-05-13: The old code did it this way and it is + suspected that some GDB/SIM combinations may rely on this + behavour. The default should be one2one_register_sim_regno + (below). */ + if (REGISTER_NAME (regnum) != NULL + && REGISTER_NAME (regnum)[0] != '\0') + return regnum; + else + return LEGACY_SIM_REGNO_IGNORE; } int @@ -108,6 +102,12 @@ generic_skip_trampoline_code (CORE_ADDR pc) return 0; } +CORE_ADDR +generic_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc) +{ + return 0; +} + int generic_in_solib_call_trampoline (CORE_ADDR pc, char *name) { @@ -115,25 +115,15 @@ generic_in_solib_call_trampoline (CORE_ADDR pc, char *name) } int -generic_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc) +generic_in_solib_return_trampoline (CORE_ADDR pc, char *name) { return 0; } -char * -legacy_register_name (int i) +int +generic_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc) { -#ifdef REGISTER_NAMES - static char *names[] = REGISTER_NAMES; - if (i < 0 || i >= (sizeof (names) / sizeof (*names))) - return NULL; - else - return names[i]; -#else - internal_error (__FILE__, __LINE__, - "legacy_register_name: called."); - return NULL; -#endif + return 0; } #if defined (CALL_DUMMY) @@ -144,7 +134,9 @@ LONGEST legacy_call_dummy_words[1]; int legacy_sizeof_call_dummy_words = sizeof (legacy_call_dummy_words); void -generic_remote_translate_xfer_address (CORE_ADDR gdb_addr, int gdb_len, +generic_remote_translate_xfer_address (struct gdbarch *gdbarch, + struct regcache *regcache, + CORE_ADDR gdb_addr, int gdb_len, CORE_ADDR * rem_addr, int *rem_len) { *rem_addr = gdb_addr; @@ -157,14 +149,6 @@ generic_prologue_frameless_p (CORE_ADDR ip) return ip == SKIP_PROLOGUE (ip); } -/* New/multi-arched targets should use the correct gdbarch field - instead of using this global pointer. */ -int -legacy_print_insn (bfd_vma vma, disassemble_info *info) -{ - return (*tm_print_insn) (vma, info); -} - /* Helper functions for INNER_THAN */ int @@ -185,11 +169,7 @@ core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs) const struct floatformat * default_float_format (struct gdbarch *gdbarch) { -#if GDB_MULTI_ARCH int byte_order = gdbarch_byte_order (gdbarch); -#else - int byte_order = TARGET_BYTE_ORDER; -#endif switch (byte_order) { case BFD_ENDIAN_BIG: @@ -206,11 +186,7 @@ default_float_format (struct gdbarch *gdbarch) const struct floatformat * default_double_format (struct gdbarch *gdbarch) { -#if GDB_MULTI_ARCH int byte_order = gdbarch_byte_order (gdbarch); -#else - int byte_order = TARGET_BYTE_ORDER; -#endif switch (byte_order) { case BFD_ENDIAN_BIG: @@ -223,52 +199,24 @@ default_double_format (struct gdbarch *gdbarch) } } -void -default_print_float_info (void) -{ -#ifdef FLOAT_INFO -#if GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL -#error "FLOAT_INFO defined in multi-arch" -#endif - FLOAT_INFO; -#else - printf_filtered ("No floating point info available for this processor.\n"); -#endif -} - /* Misc helper functions for targets. */ int -frame_num_args_unknown (struct frame_info *fi) -{ - return -1; -} - - -int -generic_register_convertible_not (int num) +deprecated_register_convertible_not (int num) { return 0; } -/* Under some ABI's that specify the `struct convention' for returning - structures by value, by the time we've returned from the function, - the return value is sitting there in the caller's buffer, but GDB - has no way to find the address of that buffer. - - On such architectures, use this function as your - extract_struct_value_address method. When asked to a struct - returned by value in this fashion, GDB will print a nice error - message, instead of garbage. */ CORE_ADDR -generic_cannot_extract_struct_value_address (char *dummy) +core_addr_identity (CORE_ADDR addr) { - return 0; + return addr; } CORE_ADDR -core_addr_identity (CORE_ADDR addr) +convert_from_func_ptr_addr_identity (struct gdbarch *gdbarch, CORE_ADDR addr, + struct target_ops *targ) { return addr; } @@ -279,88 +227,15 @@ no_op_reg_to_regnum (int reg) return reg; } -/* For use by frame_args_address and frame_locals_address. */ CORE_ADDR -default_frame_address (struct frame_info *fi) -{ - return fi->frame; -} - -/* Default prepare_to_procced(). */ -int -default_prepare_to_proceed (int select_it) -{ - return 0; -} - -/* Generic prepare_to_proceed(). This one should be suitable for most - targets that support threads. */ -int -generic_prepare_to_proceed (int select_it) -{ - ptid_t wait_ptid; - struct target_waitstatus wait_status; - - /* Get the last target status returned by target_wait(). */ - get_last_target_status (&wait_ptid, &wait_status); - - /* Make sure we were stopped either at a breakpoint, or because - of a Ctrl-C. */ - if (wait_status.kind != TARGET_WAITKIND_STOPPED - || (wait_status.value.sig != TARGET_SIGNAL_TRAP && - wait_status.value.sig != TARGET_SIGNAL_INT)) - { - return 0; - } - - if (!ptid_equal (wait_ptid, minus_one_ptid) - && !ptid_equal (inferior_ptid, wait_ptid)) - { - /* Switched over from WAIT_PID. */ - CORE_ADDR wait_pc = read_pc_pid (wait_ptid); - - if (wait_pc != read_pc ()) - { - if (select_it) - { - /* Switch back to WAIT_PID thread. */ - inferior_ptid = wait_ptid; - - /* FIXME: This stuff came from switch_to_thread() in - thread.c (which should probably be a public function). */ - flush_cached_frames (); - registers_changed (); - stop_pc = wait_pc; - select_frame (get_current_frame ()); - } - /* We return 1 to indicate that there is a breakpoint here, - so we need to step over it before continuing to avoid - hitting it straight away. */ - if (breakpoint_here_p (wait_pc)) - { - return 1; - } - } - } - return 0; - -} - -void -init_frame_pc_noop (int fromleaf, struct frame_info *prev) -{ - return; -} - -void -init_frame_pc_default (int fromleaf, struct frame_info *prev) +deprecated_init_frame_pc_default (int fromleaf, struct frame_info *prev) { - if (fromleaf) - prev->pc = SAVED_PC_AFTER_CALL (prev->next); - else if (prev->next != NULL) - prev->pc = FRAME_SAVED_PC (prev->next); + if (fromleaf && DEPRECATED_SAVED_PC_AFTER_CALL_P ()) + return DEPRECATED_SAVED_PC_AFTER_CALL (get_next_frame (prev)); + else if (get_next_frame (prev) != NULL) + return DEPRECATED_FRAME_SAVED_PC (get_next_frame (prev)); else - prev->pc = read_pc (); + return read_pc (); } void @@ -382,15 +257,27 @@ cannot_register_not (int regnum) } /* Legacy version of target_virtual_frame_pointer(). Assumes that - there is an FP_REGNUM and that it is the same, cooked or raw. */ + there is an DEPRECATED_FP_REGNUM and that it is the same, cooked or + raw. */ void legacy_virtual_frame_pointer (CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset) { - gdb_assert (FP_REGNUM >= 0); - *frame_regnum = FP_REGNUM; + /* FIXME: cagney/2002-09-13: This code is used when identifying the + frame pointer of the current PC. It is assuming that a single + register and an offset can determine this. I think it should + instead generate a byte code expression as that would work better + with things like Dwarf2's CFI. */ + if (DEPRECATED_FP_REGNUM >= 0 && DEPRECATED_FP_REGNUM < NUM_REGS) + *frame_regnum = DEPRECATED_FP_REGNUM; + else if (SP_REGNUM >= 0 && SP_REGNUM < NUM_REGS) + *frame_regnum = SP_REGNUM; + else + /* Should this be an internal error? I guess so, it is reflecting + an architectural limitation in the current design. */ + internal_error (__FILE__, __LINE__, "No virtual frame pointer available"); *frame_offset = 0; } @@ -401,45 +288,86 @@ int generic_register_size (int regnum) { gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS); - return TYPE_LENGTH (REGISTER_VIRTUAL_TYPE (regnum)); + if (gdbarch_register_type_p (current_gdbarch)) + return TYPE_LENGTH (gdbarch_register_type (current_gdbarch, regnum)); + else + /* FIXME: cagney/2003-03-01: Once all architectures implement + gdbarch_register_type(), this entire function can go away. It + is made obsolete by register_size(). */ + return TYPE_LENGTH (DEPRECATED_REGISTER_VIRTUAL_TYPE (regnum)); /* OK */ +} + +/* Assume all registers are adjacent. */ + +int +generic_register_byte (int regnum) +{ + int byte; + int i; + gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS); + byte = 0; + for (i = 0; i < regnum; i++) + { + byte += generic_register_size (i); + } + return byte; } -#if !defined (IN_SIGTRAMP) -#if defined (SIGTRAMP_START) -#define IN_SIGTRAMP(pc, name) \ - ((pc) >= SIGTRAMP_START(pc) \ - && (pc) < SIGTRAMP_END(pc) \ - ) -#else -#define IN_SIGTRAMP(pc, name) \ - (name && STREQ ("_sigtramp", name)) -#endif -#endif int legacy_pc_in_sigtramp (CORE_ADDR pc, char *name) { - return IN_SIGTRAMP(pc, name); +#if !defined (IN_SIGTRAMP) + if (SIGTRAMP_START_P ()) + return (pc) >= SIGTRAMP_START (pc) && (pc) < SIGTRAMP_END (pc); + else + return name && strcmp ("_sigtramp", name) == 0; +#else + return IN_SIGTRAMP (pc, name); +#endif } int -legacy_convert_register_p (int regnum) +legacy_convert_register_p (int regnum, struct type *type) { - return REGISTER_CONVERTIBLE (regnum); + return DEPRECATED_REGISTER_CONVERTIBLE (regnum); } void -legacy_register_to_value (int regnum, struct type *type, - char *from, char *to) +legacy_register_to_value (struct frame_info *frame, int regnum, + struct type *type, void *to) { - REGISTER_CONVERT_TO_VIRTUAL (regnum, type, from, to); + char from[MAX_REGISTER_SIZE]; + get_frame_register (frame, regnum, from); + DEPRECATED_REGISTER_CONVERT_TO_VIRTUAL (regnum, type, from, to); } void -legacy_value_to_register (struct type *type, int regnum, - char *from, char *to) +legacy_value_to_register (struct frame_info *frame, int regnum, + struct type *type, const void *tmp) +{ + char to[MAX_REGISTER_SIZE]; + char *from = alloca (TYPE_LENGTH (type)); + memcpy (from, from, TYPE_LENGTH (type)); + DEPRECATED_REGISTER_CONVERT_TO_RAW (type, regnum, from, to); + put_frame_register (frame, regnum, to); +} + +int +default_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type) { - REGISTER_CONVERT_TO_RAW (type, regnum, from, to); + if (DEPRECATED_REG_STRUCT_HAS_ADDR_P () + && DEPRECATED_REG_STRUCT_HAS_ADDR (processing_gcc_compilation, type)) + { + CHECK_TYPEDEF (type); + + return (TYPE_CODE (type) == TYPE_CODE_STRUCT + || TYPE_CODE (type) == TYPE_CODE_UNION + || TYPE_CODE (type) == TYPE_CODE_SET + || TYPE_CODE (type) == TYPE_CODE_BITSTRING); + } + + return 0; } @@ -452,8 +380,17 @@ legacy_value_to_register (struct type *type, int regnum, The choice of initial value is entirely arbitrary. During startup, the function initialize_current_architecture() updates this value based on default byte-order information extracted from BFD. */ -int target_byte_order = BFD_ENDIAN_BIG; -int target_byte_order_auto = 1; +static int target_byte_order = BFD_ENDIAN_BIG; +static int target_byte_order_auto = 1; + +enum bfd_endian +selected_byte_order (void) +{ + if (target_byte_order_auto) + return BFD_ENDIAN_UNKNOWN; + else + return target_byte_order; +} static const char endian_big[] = "big"; static const char endian_little[] = "little"; @@ -472,7 +409,7 @@ static const char *set_endian_string; static void show_endian (char *args, int from_tty) { - if (TARGET_BYTE_ORDER_AUTO) + if (target_byte_order_auto) printf_unfiltered ("The target endianness is set automatically (currently %s endian)\n", (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little")); else @@ -489,39 +426,21 @@ set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c) } else if (set_endian_string == endian_little) { + struct gdbarch_info info; target_byte_order_auto = 0; - if (GDB_MULTI_ARCH) - { - struct gdbarch_info info; - gdbarch_info_init (&info); - info.byte_order = BFD_ENDIAN_LITTLE; - if (! gdbarch_update_p (info)) - { - printf_unfiltered ("Little endian target not supported by GDB\n"); - } - } - else - { - target_byte_order = BFD_ENDIAN_LITTLE; - } + gdbarch_info_init (&info); + info.byte_order = BFD_ENDIAN_LITTLE; + if (! gdbarch_update_p (info)) + printf_unfiltered ("Little endian target not supported by GDB\n"); } else if (set_endian_string == endian_big) { + struct gdbarch_info info; target_byte_order_auto = 0; - if (GDB_MULTI_ARCH) - { - struct gdbarch_info info; - gdbarch_info_init (&info); - info.byte_order = BFD_ENDIAN_BIG; - if (! gdbarch_update_p (info)) - { - printf_unfiltered ("Big endian target not supported by GDB\n"); - } - } - else - { - target_byte_order = BFD_ENDIAN_BIG; - } + gdbarch_info_init (&info); + info.byte_order = BFD_ENDIAN_BIG; + if (! gdbarch_update_p (info)) + printf_unfiltered ("Big endian target not supported by GDB\n"); } else internal_error (__FILE__, __LINE__, @@ -529,126 +448,23 @@ set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c) show_endian (NULL, from_tty); } -/* Set the endianness from a BFD. */ - -static void -set_endian_from_file (bfd *abfd) -{ - int want; - if (GDB_MULTI_ARCH) - internal_error (__FILE__, __LINE__, - "set_endian_from_file: not for multi-arch"); - if (bfd_big_endian (abfd)) - want = BFD_ENDIAN_BIG; - else - want = BFD_ENDIAN_LITTLE; - if (TARGET_BYTE_ORDER_AUTO) - target_byte_order = want; - else if (TARGET_BYTE_ORDER != want) - warning ("%s endian file does not match %s endian target.", - want == BFD_ENDIAN_BIG ? "big" : "little", - TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little"); -} - - /* Functions to manipulate the architecture of the target */ enum set_arch { set_arch_auto, set_arch_manual }; -int target_architecture_auto = 1; - -const char *set_architecture_string; - -/* Old way of changing the current architecture. */ - -extern const struct bfd_arch_info bfd_default_arch_struct; -const struct bfd_arch_info *target_architecture = &bfd_default_arch_struct; -int (*target_architecture_hook) (const struct bfd_arch_info *ap); - -static int -arch_ok (const struct bfd_arch_info *arch) -{ - if (GDB_MULTI_ARCH) - internal_error (__FILE__, __LINE__, - "arch_ok: not multi-arched"); - /* Should be performing the more basic check that the binary is - compatible with GDB. */ - /* Check with the target that the architecture is valid. */ - return (target_architecture_hook == NULL - || target_architecture_hook (arch)); -} - -static void -set_arch (const struct bfd_arch_info *arch, - enum set_arch type) -{ - if (GDB_MULTI_ARCH) - internal_error (__FILE__, __LINE__, - "set_arch: not multi-arched"); - switch (type) - { - case set_arch_auto: - if (!arch_ok (arch)) - warning ("Target may not support %s architecture", - arch->printable_name); - target_architecture = arch; - break; - case set_arch_manual: - if (!arch_ok (arch)) - { - printf_unfiltered ("Target does not support `%s' architecture.\n", - arch->printable_name); - } - else - { - target_architecture_auto = 0; - target_architecture = arch; - } - break; - } - if (gdbarch_debug) - gdbarch_dump (current_gdbarch, gdb_stdlog); -} - -/* Set the architecture from arch/machine (deprecated) */ - -void -set_architecture_from_arch_mach (enum bfd_architecture arch, - unsigned long mach) -{ - const struct bfd_arch_info *wanted = bfd_lookup_arch (arch, mach); - if (GDB_MULTI_ARCH) - internal_error (__FILE__, __LINE__, - "set_architecture_from_arch_mach: not multi-arched"); - if (wanted != NULL) - set_arch (wanted, set_arch_manual); - else - internal_error (__FILE__, __LINE__, - "gdbarch: hardwired architecture/machine not recognized"); -} +static int target_architecture_auto = 1; -/* Set the architecture from a BFD (deprecated) */ +static const char *set_architecture_string; -static void -set_architecture_from_file (bfd *abfd) +const char * +selected_architecture_name (void) { - const struct bfd_arch_info *wanted = bfd_get_arch_info (abfd); - if (GDB_MULTI_ARCH) - internal_error (__FILE__, __LINE__, - "set_architecture_from_file: not multi-arched"); if (target_architecture_auto) - { - set_arch (wanted, set_arch_auto); - } - else if (wanted != target_architecture) - { - warning ("%s architecture file may be incompatible with %s target.", - wanted->printable_name, - target_architecture->printable_name); - } + return NULL; + else + return set_architecture_string; } - /* Called if the user enters ``show architecture'' without an argument. */ @@ -674,7 +490,7 @@ set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c) { target_architecture_auto = 1; } - else if (GDB_MULTI_ARCH) + else { struct gdbarch_info info; gdbarch_info_init (&info); @@ -688,16 +504,61 @@ set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c) printf_unfiltered ("Architecture `%s' not recognized.\n", set_architecture_string); } - else + show_architecture (NULL, from_tty); +} + +/* Try to select a global architecture that matches "info". Return + non-zero if the attempt succeds. */ +int +gdbarch_update_p (struct gdbarch_info info) +{ + struct gdbarch *new_gdbarch = gdbarch_find_by_info (info); + + /* If there no architecture by that name, reject the request. */ + if (new_gdbarch == NULL) { - const struct bfd_arch_info *arch - = bfd_scan_arch (set_architecture_string); - if (arch == NULL) - internal_error (__FILE__, __LINE__, - "set_architecture: bfd_scan_arch failed"); - set_arch (arch, set_arch_manual); + if (gdbarch_debug) + fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: " + "Architecture not found\n"); + return 0; } - show_architecture (NULL, from_tty); + + /* If it is the same old architecture, accept the request (but don't + swap anything). */ + if (new_gdbarch == current_gdbarch) + { + if (gdbarch_debug) + fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: " + "Architecture 0x%08lx (%s) unchanged\n", + (long) new_gdbarch, + gdbarch_bfd_arch_info (new_gdbarch)->printable_name); + return 1; + } + + /* It's a new architecture, swap it in. */ + if (gdbarch_debug) + fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: " + "New architecture 0x%08lx (%s) selected\n", + (long) new_gdbarch, + gdbarch_bfd_arch_info (new_gdbarch)->printable_name); + deprecated_current_gdbarch_select_hack (new_gdbarch); + + return 1; +} + +/* Return the architecture for ABFD. If no suitable architecture + could be find, return NULL. */ + +struct gdbarch * +gdbarch_from_bfd (bfd *abfd) +{ + struct gdbarch *old_gdbarch = current_gdbarch; + struct gdbarch *new_gdbarch; + struct gdbarch_info info; + + gdbarch_info_init (&info); + info.abfd = abfd; + return gdbarch_find_by_info (info); } /* Set the dynamic target-system-dependent parameters (architecture, @@ -706,19 +567,12 @@ set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c) void set_gdbarch_from_file (bfd *abfd) { - if (GDB_MULTI_ARCH) - { - struct gdbarch_info info; - gdbarch_info_init (&info); - info.abfd = abfd; - if (! gdbarch_update_p (info)) - error ("Architecture of file not recognized.\n"); - } - else - { - set_architecture_from_file (abfd); - set_endian_from_file (abfd); - } + struct gdbarch *gdbarch; + + gdbarch = gdbarch_from_bfd (abfd); + if (gdbarch == NULL) + error ("Architecture of file not recognized.\n"); + deprecated_current_gdbarch_select_hack (gdbarch); } /* Initialize the current architecture. Update the ``set @@ -805,22 +659,9 @@ initialize_current_architecture (void) info.byte_order = BFD_ENDIAN_BIG; } - if (GDB_MULTI_ARCH) - { - if (! gdbarch_update_p (info)) - { - internal_error (__FILE__, __LINE__, - "initialize_current_architecture: Selection of initial architecture failed"); - } - } - else - { - /* If the multi-arch logic comes up with a byte-order (from BFD) - use it for the non-multi-arch case. */ - if (info.byte_order != BFD_ENDIAN_UNKNOWN) - target_byte_order = info.byte_order; - initialize_non_multiarch (); - } + if (! gdbarch_update_p (info)) + internal_error (__FILE__, __LINE__, + "initialize_current_architecture: Selection of initial architecture failed"); /* Create the ``set architecture'' command appending ``auto'' to the list of architectures. */ @@ -851,7 +692,7 @@ initialize_current_architecture (void) /* Initialize a gdbarch info to values that will be automatically overridden. Note: Originally, this ``struct info'' was initialized - using memset(0). Unfortunatly, that ran into problems, namely + using memset(0). Unfortunately, that ran into problems, namely BFD_ENDIAN_BIG is zero. An explicit initialization function that can explicitly set each field to a well defined value is used. */ @@ -860,11 +701,60 @@ gdbarch_info_init (struct gdbarch_info *info) { memset (info, 0, sizeof (struct gdbarch_info)); info->byte_order = BFD_ENDIAN_UNKNOWN; + info->osabi = GDB_OSABI_UNINITIALIZED; +} + +/* Similar to init, but this time fill in the blanks. Information is + obtained from the specified architecture, global "set ..." options, + and explicitly initialized INFO fields. */ + +void +gdbarch_info_fill (struct gdbarch *gdbarch, struct gdbarch_info *info) +{ + /* "(gdb) set architecture ...". */ + if (info->bfd_arch_info == NULL + && !target_architecture_auto + && gdbarch != NULL) + info->bfd_arch_info = gdbarch_bfd_arch_info (gdbarch); + if (info->bfd_arch_info == NULL + && info->abfd != NULL + && bfd_get_arch (info->abfd) != bfd_arch_unknown + && bfd_get_arch (info->abfd) != bfd_arch_obscure) + info->bfd_arch_info = bfd_get_arch_info (info->abfd); + if (info->bfd_arch_info == NULL + && gdbarch != NULL) + info->bfd_arch_info = gdbarch_bfd_arch_info (gdbarch); + + /* "(gdb) set byte-order ...". */ + if (info->byte_order == BFD_ENDIAN_UNKNOWN + && !target_byte_order_auto + && gdbarch != NULL) + info->byte_order = gdbarch_byte_order (gdbarch); + /* From the INFO struct. */ + if (info->byte_order == BFD_ENDIAN_UNKNOWN + && info->abfd != NULL) + info->byte_order = (bfd_big_endian (info->abfd) ? BFD_ENDIAN_BIG + : bfd_little_endian (info->abfd) ? BFD_ENDIAN_LITTLE + : BFD_ENDIAN_UNKNOWN); + /* From the current target. */ + if (info->byte_order == BFD_ENDIAN_UNKNOWN + && gdbarch != NULL) + info->byte_order = gdbarch_byte_order (gdbarch); + + /* "(gdb) set osabi ...". Handled by gdbarch_lookup_osabi. */ + if (info->osabi == GDB_OSABI_UNINITIALIZED) + info->osabi = gdbarch_lookup_osabi (info->abfd); + if (info->osabi == GDB_OSABI_UNINITIALIZED + && gdbarch != NULL) + info->osabi = gdbarch_osabi (gdbarch); + + /* Must have at least filled in the architecture. */ + gdb_assert (info->bfd_arch_info != NULL); } /* */ -extern initialize_file_ftype _initialize_gdbarch_utils; +extern initialize_file_ftype _initialize_gdbarch_utils; /* -Wmissing-prototypes */ void _initialize_gdbarch_utils (void)