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authorMichael Snyder <msnyder@vmware.com>2000-08-30 00:58:58 +0000
committerMichael Snyder <msnyder@vmware.com>2000-08-30 00:58:58 +0000
commit23e049712dca23855caea20f302a64039360e381 (patch)
tree770a6936c7d091fff978b4c8bc6e6fe70496ef9f /gdb/solib.c
parentbafda96e6e2bc73cee9ffa61d893c96a592b92b5 (diff)
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2000-08-29 Michael Snyder <msnyder@seadog.cygnus.com>
* valops.c (value_cast): Indentation fix-up. * acconfig.h (HAVE_PRGREGSET32_T, HAVE_PRFPREGSET32_T, HAVE_STRUCT_LINK_MAP32): New configure macros. * config.in: Ditto. * configure.in: Test for the above new macros. * breakpoint.c: Update copyright date. * core-sol2.c: Include v9/sys/privregs.h directly to work around a bug in Sun's Solaris 8 header files. (fetch_core_registers): Use the above new configure macros to handle cross-debugging of 32-bit core files on a 64-bit host. * sol-thread.c (ps_pdmodel) New function. (rw_common): For debugging of 32-bit apps on a 64-bit host, truncate addresses to 32 bits. * solib.c (solib_extract_address): Functionize. Make 32/64 aware. (LM_ADDR, LM_NEXT, LM_NAME): Ditto. (IGNORE_FIRST_LINK_MAP): Ditto. (first_link_map_member): Make 32/64 aware. (open_symbol_file_object): Ditto. (current_sos): Ditto.
Diffstat (limited to 'gdb/solib.c')
-rw-r--r--gdb/solib.c207
1 files changed, 177 insertions, 30 deletions
diff --git a/gdb/solib.c b/gdb/solib.c
index d83c95a..1a725a5 100644
--- a/gdb/solib.c
+++ b/gdb/solib.c
@@ -19,7 +19,7 @@
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-
+#define _SYSCALL32 /* for Sparc64 cross Sparc32 */
#include "defs.h"
/* This file is only compilable if link.h is available. */
@@ -107,24 +107,33 @@ static char *main_name_list[] =
NULL
};
-/* local data declarations */
-
-/* Macro to extract an address from a solib structure.
+/* Function to extract an address from a solib structure.
When GDB is configured for some 32-bit targets (e.g. Solaris 2.7
sparc), BFD is configured to handle 64-bit targets, so CORE_ADDR is
64 bits. We have to extract only the significant bits of addresses
- to get the right address when accessing the core file BFD. */
+ to get the right address when accessing the core file BFD.
-#define SOLIB_EXTRACT_ADDRESS(member) \
- extract_address (&member, sizeof (member))
+ We'll use the BFD itself to determine the number of significant bits.
+ MVS, June 2000 */
+
+static CORE_ADDR
+solib_extract_address (void *memberp)
+{
+ return extract_address (memberp,
+ bfd_elf_get_arch_size (exec_bfd) / 8);
+}
+
+#define SOLIB_EXTRACT_ADDRESS(MEMBER) \
+ solib_extract_address (&MEMBER)
+
+/* local data declarations */
#ifndef SVR4_SHARED_LIBS
-#define LM_ADDR(so) (SOLIB_EXTRACT_ADDRESS ((so) -> lm.lm_addr))
-#define LM_NEXT(so) (SOLIB_EXTRACT_ADDRESS ((so) -> lm.lm_next))
-#define LM_NAME(so) (SOLIB_EXTRACT_ADDRESS ((so) -> lm.lm_name))
-/* Test for first link map entry; first entry is a shared library. */
-#define IGNORE_FIRST_LINK_MAP_ENTRY(so) (0)
+/* NOTE: converted the macros LM_ADDR, LM_NEXT, LM_NAME and
+ IGNORE_FIRST_LINK_MAP_ENTRY into functions (see below).
+ MVS, June 2000 */
+
static struct link_dynamic dynamic_copy;
static struct link_dynamic_2 ld_2_copy;
static struct ld_debug debug_copy;
@@ -133,13 +142,11 @@ static CORE_ADDR flag_addr;
#else /* SVR4_SHARED_LIBS */
-#define LM_ADDR(so) (SOLIB_EXTRACT_ADDRESS ((so) -> lm.l_addr))
-#define LM_NEXT(so) (SOLIB_EXTRACT_ADDRESS ((so) -> lm.l_next))
-#define LM_NAME(so) (SOLIB_EXTRACT_ADDRESS ((so) -> lm.l_name))
-/* Test for first link map entry; first entry is the exec-file. */
-#define IGNORE_FIRST_LINK_MAP_ENTRY(so) \
- (SOLIB_EXTRACT_ADDRESS ((so) -> lm.l_prev) == 0)
static struct r_debug debug_copy;
+#if defined (HAVE_STRUCT_LINK_MAP32)
+static struct r_debug32 debug32_copy; /* Sparc64 cross Sparc32 */
+#endif
+
char shadow_contents[BREAKPOINT_MAX]; /* Stash old bkpt addr contents */
#endif /* !SVR4_SHARED_LIBS */
@@ -152,6 +159,9 @@ struct so_list
struct so_list *next; /* next structure in linked list */
struct link_map lm; /* copy of link map from inferior */
+#if defined (HAVE_STRUCT_LINK_MAP32)
+ struct link_map32 lm32; /* copy of link map from 32-bit inferior */
+#endif
CORE_ADDR lmaddr; /* addr in inferior lm was read from */
/* Shared object file name, exactly as it appears in the
@@ -179,6 +189,107 @@ struct so_list
};
static struct so_list *so_list_head; /* List of known shared objects */
+
+/* link map access functions */
+
+#ifndef SVR4_SHARED_LIBS
+
+static CORE_ADDR
+LM_ADDR (so)
+ struct so_list *so;
+{
+#if defined (HAVE_STRUCT_LINK_MAP32)
+ if (bfd_elf_get_arch_size (exec_bfd) == 32)
+ return extract_address (&so->lm32.lm_addr, sizeof (so->lm32.lm_addr));
+ else
+#endif
+ return extract_address (&so->lm.lm_addr, sizeof (so->lm.lm_addr));
+}
+
+static CORE_ADDR
+LM_NEXT (so)
+ struct so_list *so;
+{
+#if defined (HAVE_STRUCT_LINK_MAP32)
+ if (bfd_elf_get_arch_size (exec_bfd) == 32)
+ return extract_address (&so->lm32.lm_next, sizeof (so->lm32.lm_next));
+ else
+#endif
+ return extract_address (&so->lm.lm_next, sizeof (so->lm.lm_next));
+}
+
+static CORE_ADDR
+LM_NAME (so)
+ struct so_list *so;
+{
+#if defined (HAVE_STRUCT_LINK_MAP32)
+ if (bfd_elf_get_arch_size (exec_bfd) == 32)
+ return extract_address (&so->lm32.lm_name, sizeof (so->lm32.lm_name));
+ else
+#endif
+ return extract_address (&so->lm.lm_name, sizeof (so->lm.lm_name));
+}
+
+static int
+IGNORE_FIRST_LINK_MAP_ENTRY (so)
+ struct so_list *so;
+{
+ return 0;
+}
+
+#else /* SVR4_SHARED_LIBS */
+
+static CORE_ADDR
+LM_ADDR (so)
+ struct so_list *so;
+{
+#if defined (HAVE_STRUCT_LINK_MAP32)
+ if (bfd_elf_get_arch_size (exec_bfd) == 32)
+ return extract_address (&so->lm32.l_addr, sizeof (so->lm32.l_addr));
+ else
+#endif
+ return extract_address (&so->lm.l_addr, sizeof (so->lm.l_addr));
+}
+
+static CORE_ADDR
+LM_NEXT (so)
+ struct so_list *so;
+{
+#if defined (HAVE_STRUCT_LINK_MAP32)
+ if (bfd_elf_get_arch_size (exec_bfd) == 32)
+ return extract_address (&so->lm32.l_next, sizeof (so->lm32.l_next));
+ else
+#endif
+ return extract_address (&so->lm.l_next, sizeof (so->lm.l_next));
+}
+
+static CORE_ADDR
+LM_NAME (so)
+ struct so_list *so;
+{
+#if defined (HAVE_STRUCT_LINK_MAP32)
+ if (bfd_elf_get_arch_size (exec_bfd) == 32)
+ return extract_address (&so->lm32.l_name, sizeof (so->lm32.l_name));
+ else
+#endif
+ return extract_address (&so->lm.l_name, sizeof (so->lm.l_name));
+}
+
+static int
+IGNORE_FIRST_LINK_MAP_ENTRY (so)
+ struct so_list *so;
+{
+#if defined (HAVE_STRUCT_LINK_MAP32)
+ if (bfd_elf_get_arch_size (exec_bfd) == 32)
+ return (solib_extract_address (&(so) -> lm32.l_prev) == 0);
+ else
+#endif
+ return (solib_extract_address (&(so) -> lm.l_prev) == 0);
+}
+
+#endif /* !SVR4_SHARED_LIBS */
+
+
static CORE_ADDR debug_base; /* Base of dynamic linker structures */
static CORE_ADDR breakpoint_addr; /* Address where end bkpt is set */
@@ -925,12 +1036,23 @@ first_link_map_member (void)
}
#else /* SVR4_SHARED_LIBS */
-
- read_memory (debug_base, (char *) &debug_copy, sizeof (struct r_debug));
+#if defined (HAVE_STRUCT_LINK_MAP32)
+ if (bfd_elf_get_arch_size (exec_bfd) == 32)
+ {
+ read_memory (debug_base, (char *) &debug32_copy,
+ sizeof (struct r_debug32));
+ lm = SOLIB_EXTRACT_ADDRESS (debug32_copy.r_map);
+ }
+ else
+#endif
+ {
+ read_memory (debug_base, (char *) &debug_copy,
+ sizeof (struct r_debug));
+ lm = SOLIB_EXTRACT_ADDRESS (debug_copy.r_map);
+ }
/* FIXME: Perhaps we should validate the info somehow, perhaps by
checking r_version for a known version number, or r_state for
RT_CONSISTENT. */
- lm = SOLIB_EXTRACT_ADDRESS (debug_copy.r_map);
#endif /* !SVR4_SHARED_LIBS */
@@ -962,7 +1084,6 @@ open_symbol_file_object (from_ttyp)
int *from_ttyp; /* sneak past catch_errors */
{
CORE_ADDR lm;
- struct link_map lmcopy;
char *filename;
int errcode;
@@ -977,15 +1098,35 @@ open_symbol_file_object (from_ttyp)
if ((lm = first_link_map_member ()) == 0)
return 0; /* failed somehow... */
- /* Read from target memory to GDB. */
- read_memory (lm, (void *) &lmcopy, sizeof (lmcopy));
+#if defined (HAVE_STRUCT_LINK_MAP32)
+ if (bfd_elf_get_arch_size (exec_bfd) == 32)
+ {
+ struct link_map32 lmcopy;
+ /* Read from target memory to GDB. */
+ read_memory (lm, (void *) &lmcopy, sizeof (lmcopy));
- if (lmcopy.l_name == 0)
- return 0; /* no filename. */
+ if (lmcopy.l_name == 0)
+ return 0; /* no filename. */
+
+ /* Now fetch the filename from target memory. */
+ target_read_string (SOLIB_EXTRACT_ADDRESS (lmcopy.l_name),
+ &filename, MAX_PATH_SIZE - 1, &errcode);
+ }
+ else
+#endif /* HAVE_STRUCT_LINK_MAP32 */
+ {
+ struct link_map lmcopy;
+ /* Read from target memory to GDB. */
+ read_memory (lm, (void *) &lmcopy, sizeof (lmcopy));
+
+ if (lmcopy.l_name == 0)
+ return 0; /* no filename. */
+
+ /* Now fetch the filename from target memory. */
+ target_read_string (SOLIB_EXTRACT_ADDRESS (lmcopy.l_name), &filename,
+ MAX_PATH_SIZE - 1, &errcode);
+ }
- /* Now fetch the filename from target memory. */
- target_read_string (SOLIB_EXTRACT_ADDRESS (lmcopy.l_name), &filename,
- MAX_PATH_SIZE - 1, &errcode);
if (errcode)
{
warning ("failed to read exec filename from attached file: %s",
@@ -1114,7 +1255,13 @@ current_sos (void)
memset (new, 0, sizeof (*new));
new->lmaddr = lm;
- read_memory (lm, (char *) &(new->lm), sizeof (struct link_map));
+
+#if defined (HAVE_STRUCT_LINK_MAP32)
+ if (bfd_elf_get_arch_size (exec_bfd) == 32)
+ read_memory (lm, (char *) &(new->lm32), sizeof (struct link_map32));
+ else
+#endif
+ read_memory (lm, (char *) &(new->lm), sizeof (struct link_map));
lm = LM_NEXT (new);