#include "gdb_string.h"
#include "regcache.h"
+#include "elf-bfd.h"
+
#ifdef USE_PROC_FS
#include <sys/procfs.h>
/* Prototypes for supply_gregset etc. */
#include "symfile.h" /* for 'entry_point_address' */
-/*
- * Some local macros that have multi-arch and non-multi-arch versions:
- */
-
-#if (GDB_MULTI_ARCH > 0)
-
-/* Does the target have Floating Point registers? */
-#define SPARC_HAS_FPU (gdbarch_tdep (current_gdbarch)->has_fpu)
-/* Number of bytes devoted to Floating Point registers: */
-#define FP_REGISTER_BYTES (gdbarch_tdep (current_gdbarch)->fp_register_bytes)
-/* Highest numbered Floating Point register. */
-#define FP_MAX_REGNUM (gdbarch_tdep (current_gdbarch)->fp_max_regnum)
-/* Size of a general (integer) register: */
-#define SPARC_INTREG_SIZE (gdbarch_tdep (current_gdbarch)->intreg_size)
-/* Offset within the call dummy stack of the saved registers. */
-#define DUMMY_REG_SAVE_OFFSET (gdbarch_tdep (current_gdbarch)->reg_save_offset)
-
-#else /* non-multi-arch */
-
-
-/* Does the target have Floating Point registers? */
-#if defined(TARGET_SPARCLET) || defined(TARGET_SPARCLITE)
-#define SPARC_HAS_FPU 0
-#else
-#define SPARC_HAS_FPU 1
-#endif
-
-/* Number of bytes devoted to Floating Point registers: */
-#if (GDB_TARGET_IS_SPARC64)
-#define FP_REGISTER_BYTES (64 * 4)
-#else
-#if (SPARC_HAS_FPU)
-#define FP_REGISTER_BYTES (32 * 4)
-#else
-#define FP_REGISTER_BYTES 0
-#endif
-#endif
-
-/* Highest numbered Floating Point register. */
-#if (GDB_TARGET_IS_SPARC64)
-#define FP_MAX_REGNUM (FP0_REGNUM + 48)
-#else
-#define FP_MAX_REGNUM (FP0_REGNUM + 32)
-#endif
-
-/* Size of a general (integer) register: */
-#define SPARC_INTREG_SIZE (REGISTER_RAW_SIZE (G0_REGNUM))
-
-/* Offset within the call dummy stack of the saved registers. */
-#if (GDB_TARGET_IS_SPARC64)
-#define DUMMY_REG_SAVE_OFFSET (128 + 16)
-#else
-#define DUMMY_REG_SAVE_OFFSET 0x60
-#endif
-
-#endif /* GDB_MULTI_ARCH */
-
-struct gdbarch_tdep
- {
- int has_fpu;
- int fp_register_bytes;
- int y_regnum;
- int fp_max_regnum;
- int intreg_size;
- int reg_save_offset;
- int call_dummy_call_offset;
- int print_insn_mach;
- };
+#include "sparc-tdep.h"
/* Now make GDB_TARGET_IS_SPARC64 a runtime test. */
/* FIXME MVS: or try testing bfd_arch_info.arch and bfd_arch_info.mach ...
}
-#ifndef CALL_DUMMY_CALL_OFFSET
-#define CALL_DUMMY_CALL_OFFSET \
- (gdbarch_tdep (current_gdbarch)->call_dummy_call_offset)
-#endif /* CALL_DUMMY_CALL_OFFSET */
-
/* Insert the function address into a call dummy instruction sequence
stored at DUMMY.
static struct gdbarch * sparc_gdbarch_init (struct gdbarch_info info,
struct gdbarch_list *arches);
+static void sparc_dump_tdep (struct gdbarch *gdbarch, struct ui_file *file);
+
void
_initialize_sparc_tdep (void)
{
/* Hook us into the gdbarch mechanism. */
- register_gdbarch_init (bfd_arch_sparc, sparc_gdbarch_init);
+ gdbarch_register (bfd_arch_sparc, sparc_gdbarch_init, sparc_dump_tdep);
tm_print_insn = gdb_print_insn_sparc;
tm_print_insn_info.mach = TM_PRINT_INSN_MACH; /* Selects sparc/sparclite */
return 0;
}
+\f
+static void
+process_note_abi_tag_sections (bfd *abfd, asection *sect, void *obj)
+{
+ int *os_ident_ptr = obj;
+ const char *name;
+ unsigned int sect_size;
+
+ name = bfd_get_section_name (abfd, sect);
+ sect_size = bfd_section_size (abfd, sect);
+ if (strcmp (name, ".note.ABI-tag") == 0 && sect_size > 0)
+ {
+ unsigned int name_length, data_length, note_type;
+ char *note = alloca (sect_size);
+
+ bfd_get_section_contents (abfd, sect, note,
+ (file_ptr) 0, (bfd_size_type) sect_size);
+
+ name_length = bfd_h_get_32 (abfd, note);
+ data_length = bfd_h_get_32 (abfd, note + 4);
+ note_type = bfd_h_get_32 (abfd, note + 8);
+
+ if (name_length == 4 && data_length == 16 && note_type == 1
+ && strcmp (note + 12, "GNU") == 0)
+ {
+ int os_number = bfd_h_get_32 (abfd, note + 16);
+
+ /* The case numbers are from abi-tags in glibc. */
+ switch (os_number)
+ {
+ case 0:
+ *os_ident_ptr = ELFOSABI_LINUX;
+ break;
+ case 1:
+ *os_ident_ptr = ELFOSABI_HURD;
+ break;
+ case 2:
+ *os_ident_ptr = ELFOSABI_SOLARIS;
+ break;
+ default:
+ internal_error (__FILE__, __LINE__,
+ "process_note_abi_sections: "
+ "unknown OS number %d", os_number);
+ break;
+ }
+ }
+ }
+}
+
+struct sparc_abi_handler
+{
+ struct sparc_abi_handler *next;
+ int os_ident;
+ void (*init_abi)(struct gdbarch_info, struct gdbarch *);
+};
+
+struct sparc_abi_handler *sparc_abi_handler_list = NULL;
+
+void
+sparc_gdbarch_register_os_abi (int os_ident,
+ void (*init_abi)(struct gdbarch_info,
+ struct gdbarch *))
+{
+ struct sparc_abi_handler *p;
+
+ for (p = sparc_abi_handler_list; p != NULL; p = p->next)
+ {
+ if (p->os_ident == os_ident)
+ {
+ internal_error
+ (__FILE__, __LINE__,
+ "sparc_gdbarch_register_os_abi: A handler for this ABI variant (%d)"
+ " has already been registered", (int)os_ident);
+ /* If user wants to continue, override previous definition. */
+ p->init_abi = init_abi;
+ return;
+ }
+ }
+
+ p = (struct sparc_abi_handler *) xmalloc (sizeof (*p));
+ p->os_ident = os_ident;
+ p->init_abi = init_abi;
+ p->next = sparc_abi_handler_list;
+ sparc_abi_handler_list = p;
+}
+
/*
* Gdbarch "constructor" function.
*/
{
struct gdbarch *gdbarch;
struct gdbarch_tdep *tdep;
+ struct sparc_abi_handler *abi_handler;
+ int os_ident;
static LONGEST call_dummy_32[] =
{ 0xbc100001, 0x9de38000, 0xbc100002, 0xbe100003,
};
static LONGEST call_dummy_nil[] = {0};
+ if (info.abfd != NULL
+ && bfd_get_flavour (info.abfd) == bfd_target_elf_flavour)
+ {
+ os_ident = elf_elfheader (info.abfd)->e_ident[EI_OSABI];
+
+ /* If os_ident is 0, it is not necessarily the case that we're
+ on a SYSV system. (ELFOSABI_NONE is defined to be 0.)
+ GNU/Linux uses a note section to record OS/ABI info, but
+ leaves e_ident[EI_OSABI] zero. So we have to check for note
+ sections too. */
+ if (os_ident == ELFOSABI_NONE)
+ bfd_map_over_sections (info.abfd,
+ process_note_abi_tag_sections,
+ &os_ident);
+ }
+ else
+ os_ident = -1;
+
/* First see if there is already a gdbarch that can satisfy the request. */
- arches = gdbarch_list_lookup_by_info (arches, &info);
- if (arches != NULL)
- return arches->gdbarch;
+ for (arches = gdbarch_list_lookup_by_info (arches, &info);
+ arches != NULL;
+ arches = gdbarch_list_lookup_by_info (arches->next, &info))
+ {
+ tdep = gdbarch_tdep (arches->gdbarch);
+ if (tdep && tdep->os_ident == os_ident)
+ return arches->gdbarch;
+ }
/* None found: is the request for a sparc architecture? */
if (info.bfd_arch_info->arch != bfd_arch_sparc)
tdep = (struct gdbarch_tdep *) xmalloc (sizeof (struct gdbarch_tdep));
gdbarch = gdbarch_alloc (&info, tdep);
+ tdep->os_ident = os_ident;
+
/* First set settings that are common for all sparc architectures. */
set_gdbarch_believe_pcc_promotion (gdbarch, 1);
set_gdbarch_breakpoint_from_pc (gdbarch, memory_breakpoint_from_pc);
break;
}
+ for (abi_handler = sparc_abi_handler_list;
+ abi_handler;
+ abi_handler = abi_handler->next)
+ if (abi_handler->os_ident == os_ident)
+ break;
+
+ if (abi_handler)
+ abi_handler->init_abi (info, gdbarch);
+
return gdbarch;
}
+static void
+sparc_dump_tdep (struct gdbarch *gdbarch, struct ui_file *file)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+
+ if (tdep == NULL)
+ return;
+
+ fprintf_unfiltered (file, "sparc_dump_tdep: os_ident ");
+ switch (tdep->os_ident)
+ {
+ case ELFOSABI_NONE:
+ fprintf_unfiltered (file, "ELFOSABI_NONE");
+ break;
+ case ELFOSABI_NETBSD:
+ fprintf_unfiltered (file, "ELFOSABI_NETBSD");
+ break;
+ case ELFOSABI_LINUX:
+ fprintf_unfiltered (file, "ELFOSABI_LINUX");
+ break;
+ case ELFOSABI_HURD:
+ fprintf_unfiltered (file, "ELFOSABI_HURD");
+ break;
+ case ELFOSABI_SOLARIS:
+ fprintf_unfiltered (file, "ELFOSABI_SOLARIS");
+ break;
+ case ELFOSABI_FREEBSD:
+ fprintf_unfiltered (file, "ELFOSABI_FREEBSD");
+ break;
+ case ELFOSABI_OPENBSD:
+ fprintf_unfiltered (file, "ELFOSABI_OPENBSD");
+ break;
+ case ELFOSABI_STANDALONE:
+ fprintf_unfiltered (file, "ELFOSABI_STANDALONE");
+ break;
+ default:
+ fprintf_unfiltered (file, "UNKNOWN");
+ break;
+ }
+
+ fprintf_unfiltered (file, "sparc_dump_tdep: has_fpu %d\n",
+ tdep->has_fpu);
+ fprintf_unfiltered (file, "sparc_dump_tdep: fp_register_bytes %d\n",
+ tdep->fp_register_bytes);
+ fprintf_unfiltered (file, "sparc_dump_tdep: y_regnum %d\n",
+ tdep->y_regnum);
+ fprintf_unfiltered (file, "sparc_dump_tdep: fp_max_regnum %d\n",
+ tdep->fp_max_regnum);
+ fprintf_unfiltered (file, "sparc_dump_tdep: intreg_size %d\n",
+ tdep->intreg_size);
+ fprintf_unfiltered (file, "sparc_dump_tdep: reg_save_offset %d\n",
+ tdep->reg_save_offset);
+ fprintf_unfiltered (file, "sparc_dump_tdep: call_dummy_call_offset %d\n",
+ tdep->call_dummy_call_offset);
+ fprintf_unfiltered (file, "sparc_dump_tdep: print_insn_mach ");
+ switch (tdep->print_insn_mach)
+ {
+ case bfd_mach_sparc:
+ fprintf_unfiltered (file, "bfd_mach_sparc\n");
+ break;
+ case bfd_mach_sparc_sparclet:
+ fprintf_unfiltered (file, "bfd_mach_sparc_sparclet\n");
+ break;
+ case bfd_mach_sparc_sparclite:
+ fprintf_unfiltered (file, "bfd_mach_sparc_sparclite\n");
+ break;
+ case bfd_mach_sparc_sparclite_le:
+ fprintf_unfiltered (file, "bfd_mach_sparc_sparclite_le\n");
+ break;
+ case bfd_mach_sparc_v8plus:
+ fprintf_unfiltered (file, "bfd_mach_sparc_v8plus\n");
+ break;
+ case bfd_mach_sparc_v8plusa:
+ fprintf_unfiltered (file, "bfd_mach_sparc_v8plusa\n");
+ break;
+ case bfd_mach_sparc_v8plusb:
+ fprintf_unfiltered (file, "bfd_mach_sparc_v8plusb\n");
+ break;
+ case bfd_mach_sparc_v9:
+ fprintf_unfiltered (file, "bfd_mach_sparc_v9\n");
+ break;
+ case bfd_mach_sparc_v9a:
+ fprintf_unfiltered (file, "bfd_mach_sparc_v9a\n");
+ break;
+ case bfd_mach_sparc_v9b:
+ fprintf_unfiltered (file, "bfd_mach_sparc_v9b\n");
+ break;
+ default:
+ fprintf_unfiltered (file, "UNKNOWN\n");
+ break;
+ };
+}
--- /dev/null
+/* Common target dependent code for GDB on SPARC systems.
+ Copyright 2002 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/*
+ * Some local macros that have multi-arch and non-multi-arch versions:
+ */
+
+#if (GDB_MULTI_ARCH > 0)
+
+/* Does the target have Floating Point registers? */
+#define SPARC_HAS_FPU (gdbarch_tdep (current_gdbarch)->has_fpu)
+/* Number of bytes devoted to Floating Point registers: */
+#define FP_REGISTER_BYTES (gdbarch_tdep (current_gdbarch)->fp_register_bytes)
+/* Highest numbered Floating Point register. */
+#define FP_MAX_REGNUM (gdbarch_tdep (current_gdbarch)->fp_max_regnum)
+/* Size of a general (integer) register: */
+#define SPARC_INTREG_SIZE (gdbarch_tdep (current_gdbarch)->intreg_size)
+/* Offset within the call dummy stack of the saved registers. */
+#define DUMMY_REG_SAVE_OFFSET (gdbarch_tdep (current_gdbarch)->reg_save_offset)
+
+#else /* non-multi-arch */
+
+/* Does the target have Floating Point registers? */
+#if defined(TARGET_SPARCLET) || defined(TARGET_SPARCLITE)
+#define SPARC_HAS_FPU 0
+#else
+#define SPARC_HAS_FPU 1
+#endif
+
+/* Number of bytes devoted to Floating Point registers: */
+#if (GDB_TARGET_IS_SPARC64)
+#define FP_REGISTER_BYTES (64 * 4)
+#else
+#if (SPARC_HAS_FPU)
+#define FP_REGISTER_BYTES (32 * 4)
+#else
+#define FP_REGISTER_BYTES 0
+#endif
+#endif
+
+/* Highest numbered Floating Point register. */
+#if (GDB_TARGET_IS_SPARC64)
+#define FP_MAX_REGNUM (FP0_REGNUM + 48)
+#else
+#define FP_MAX_REGNUM (FP0_REGNUM + 32)
+#endif
+
+/* Size of a general (integer) register: */
+#define SPARC_INTREG_SIZE (REGISTER_RAW_SIZE (G0_REGNUM))
+
+/* Offset within the call dummy stack of the saved registers. */
+#if (GDB_TARGET_IS_SPARC64)
+#define DUMMY_REG_SAVE_OFFSET (128 + 16)
+#else
+#define DUMMY_REG_SAVE_OFFSET 0x60
+#endif
+
+#endif /* GDB_MULTI_ARCH */
+
+#ifndef CALL_DUMMY_CALL_OFFSET
+#define CALL_DUMMY_CALL_OFFSET \
+ (gdbarch_tdep (current_gdbarch)->call_dummy_call_offset)
+#endif /* CALL_DUMMY_CALL_OFFSET */
+
+struct gdbarch_tdep
+ {
+ int os_ident;
+ int has_fpu;
+ int fp_register_bytes;
+ int y_regnum;
+ int fp_max_regnum;
+ int intreg_size;
+ int reg_save_offset;
+ int call_dummy_call_offset;
+ int print_insn_mach;
+ };
+
+/* How a OS variant tells the SPARC generic code that it can handle an ABI
+ type. */
+extern void sparc_gdbarch_register_os_abi (int os_ident,
+ void (*init_abi)(struct gdbarch_info,
+ struct gdbarch *));
projects / platform / upstream / binutils.git / commitdiff