diff options
Diffstat (limited to 'gdb/osabi.c')
-rw-r--r-- | gdb/osabi.c | 130 |
1 files changed, 122 insertions, 8 deletions
diff --git a/gdb/osabi.c b/gdb/osabi.c index 47d08a2ebce..5b4531ad669 100644 --- a/gdb/osabi.c +++ b/gdb/osabi.c @@ -1,5 +1,5 @@ /* OS ABI variant handling for GDB. - Copyright 2001, 2002 Free Software Foundation, Inc. + Copyright 2001, 2002, 2003 Free Software Foundation, Inc. This file is part of GDB. @@ -24,15 +24,32 @@ #include "gdb_string.h" #include "osabi.h" +#include "arch-utils.h" +#include "gdbcmd.h" +#include "command.h" #include "elf-bfd.h" +#ifndef GDB_OSABI_DEFAULT +#define GDB_OSABI_DEFAULT GDB_OSABI_UNKNOWN +#endif + +/* State for the "set osabi" command. */ +static enum { osabi_auto, osabi_default, osabi_user } user_osabi_state; +static enum gdb_osabi user_selected_osabi; +static const char *gdb_osabi_available_names[GDB_OSABI_INVALID + 3] = { + "auto", + "default", + "none", + NULL +}; +static const char *set_osabi_string; /* This table matches the indices assigned to enum gdb_osabi. Keep them in sync. */ static const char * const gdb_osabi_names[] = { - "<unknown>", + "none", "SVR4", "GNU/Hurd", @@ -88,6 +105,7 @@ gdbarch_register_osabi (enum bfd_architecture arch, unsigned long machine, { struct gdb_osabi_handler **handler_p; const struct bfd_arch_info *arch_info = bfd_lookup_arch (arch, machine); + const char **name_ptr; /* Registering an OS ABI handler for "unknown" is not allowed. */ if (osabi == GDB_OSABI_UNKNOWN) @@ -128,6 +146,16 @@ gdbarch_register_osabi (enum bfd_architecture arch, unsigned long machine, (*handler_p)->arch_info = arch_info; (*handler_p)->osabi = osabi; (*handler_p)->init_osabi = init_osabi; + + /* Add this OS ABI to the list of enum values for "set osabi", if it isn't + already there. */ + for (name_ptr = gdb_osabi_available_names; *name_ptr; name_ptr ++) + { + if (*name_ptr == gdbarch_osabi_name (osabi)) + return; + } + *name_ptr++ = gdbarch_osabi_name (osabi); + *name_ptr = NULL; } @@ -171,6 +199,20 @@ gdbarch_lookup_osabi (bfd *abfd) enum gdb_osabi osabi, match; int match_specific; + /* If we aren't in "auto" mode, return the specified OS ABI. */ + if (user_osabi_state == osabi_user) + return user_selected_osabi; + + /* If we don't have a binary, return the default OS ABI (if set) or + an inconclusive result (otherwise). */ + if (abfd == NULL) + { + if (GDB_OSABI_DEFAULT != GDB_OSABI_UNKNOWN) + return GDB_OSABI_DEFAULT; + else + return GDB_OSABI_UNINITIALIZED; + } + match = GDB_OSABI_UNKNOWN; match_specific = 0; @@ -230,18 +272,22 @@ gdbarch_lookup_osabi (bfd *abfd) } } - return match; + /* If we didn't find a match, but a default was specified at configure + time, return the default. */ + if (GDB_OSABI_DEFAULT != GDB_OSABI_UNKNOWN && match == GDB_OSABI_UNKNOWN) + return GDB_OSABI_DEFAULT; + else + return match; } void -gdbarch_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch, - enum gdb_osabi osabi) +gdbarch_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch) { const struct bfd_arch_info *arch_info = gdbarch_bfd_arch_info (gdbarch); const struct bfd_arch_info *compatible; struct gdb_osabi_handler *handler; - if (osabi == GDB_OSABI_UNKNOWN) + if (info.osabi == GDB_OSABI_UNKNOWN) { /* Don't complain about an unknown OSABI. Assume the user knows what they are doing. */ @@ -251,7 +297,7 @@ gdbarch_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch, for (handler = gdb_osabi_handler_list; handler != NULL; handler = handler->next) { - if (handler->osabi != osabi) + if (handler->osabi != info.osabi) continue; /* Check whether the machine type and architecture of the @@ -279,7 +325,7 @@ gdbarch_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch, "A handler for the OS ABI \"%s\" is not built into this " "configuration of GDB. " "Attempting to continue with the default %s settings", - gdbarch_osabi_name (osabi), + gdbarch_osabi_name (info.osabi), bfd_printable_arch_mach (arch_info->arch, arch_info->mach)); } @@ -442,10 +488,66 @@ generic_elf_osabi_sniffer (bfd *abfd) return osabi; } +static void +set_osabi (char *args, int from_tty, struct cmd_list_element *c) +{ + struct gdbarch_info info; + + if (strcmp (set_osabi_string, "auto") == 0) + user_osabi_state = osabi_auto; + else if (strcmp (set_osabi_string, "default") == 0) + { + user_selected_osabi = GDB_OSABI_DEFAULT; + user_osabi_state = osabi_user; + } + else if (strcmp (set_osabi_string, "none") == 0) + { + user_selected_osabi = GDB_OSABI_UNKNOWN; + user_osabi_state = osabi_user; + } + else + { + int i; + for (i = 1; i < GDB_OSABI_INVALID; i++) + if (strcmp (set_osabi_string, gdbarch_osabi_name (i)) == 0) + { + user_selected_osabi = i; + user_osabi_state = osabi_user; + break; + } + if (i == GDB_OSABI_INVALID) + internal_error (__FILE__, __LINE__, + "Invalid OS ABI \"%s\" passed to command handler.", + set_osabi_string); + } + + /* NOTE: At some point (true multiple architectures) we'll need to be more + graceful here. */ + gdbarch_info_init (&info); + if (! gdbarch_update_p (info)) + internal_error (__FILE__, __LINE__, "Updating OS ABI failed."); +} void +show_osabi (char *args, int from_tty) +{ + if (user_osabi_state == osabi_auto) + printf_filtered ("The current OS ABI is \"auto\" (currently \"%s\").\n", + gdbarch_osabi_name (gdbarch_osabi (current_gdbarch))); + else + printf_filtered ("The current OS ABI is \"%s\".\n", + gdbarch_osabi_name (user_selected_osabi)); + + if (GDB_OSABI_DEFAULT != GDB_OSABI_UNKNOWN) + printf_filtered ("The default OS ABI is \"%s\".\n", + gdbarch_osabi_name (GDB_OSABI_DEFAULT)); +} + +void _initialize_gdb_osabi (void) { + struct cmd_list_element *c; + if (strcmp (gdb_osabi_names[GDB_OSABI_INVALID], "<invalid>") != 0) internal_error (__FILE__, __LINE__, @@ -455,4 +557,16 @@ _initialize_gdb_osabi (void) gdbarch_register_osabi_sniffer (bfd_arch_unknown, bfd_target_elf_flavour, generic_elf_osabi_sniffer); + + if (!GDB_MULTI_ARCH) + return; + + /* Register the "set osabi" command. */ + c = add_set_enum_cmd ("osabi", class_support, gdb_osabi_available_names, + &set_osabi_string, "Set OS ABI of target.", &setlist); + + set_cmd_sfunc (c, set_osabi); + add_cmd ("osabi", class_support, show_osabi, "Show OS/ABI of target.", + &showlist); + user_osabi_state = osabi_auto; } |