2004-10-31 Andrew Cagney <cagney@gnu.org>
+ * armnbsd-tdep.c (arm_netbsd_aout_init_abi)
+ (arm_netbsd_aout_in_solib_call_trampoline): Do not set
+ in_solib_call_trampoline, delete corresponding unused function.
+ * vaxnbsd-tdep.c (vaxnbsd_aout_in_solib_call_trampoline)
+ (vaxnbsd_aout_init_abi): Ditto.
+ * sparcnbsd-tdep.c (sparcnbsd_aout_in_solib_call_trampoline)
+ (sparc32nbsd_aout_init_abi): Ditto.
+ * ppc-linux-tdep.c (ppc64_in_solib_call_trampoline)
+ (ppc_linux_init_abi): Ditto.
+ * ns32knbsd-tdep.c (ns32knbsd_aout_in_solib_call_trampoline)
+ (ns32knbsd_init_abi_aout): Ditto.
+ * mips-tdep.c (mips_in_call_stub, mips_gdbarch_init): Ditto.
+ * mips-linux-tdep.c (mips_linux_init_abi): Ditto.
+ * m68kbsd-tdep.c (m68kbsd_aout_in_solib_call_trampoline)
+ (m68kbsd_aout_init_abi): Ditto.
+ * i386-cygwin-tdep.c (i386_cygwin_in_solib_call_trampoline)
+ (i386_cygwin_init_abi): Ditto.
+ * i386bsd-tdep.c (i386bsd_aout_in_solib_call_trampoline)
+ (i386bsd_init_abi): Ditto.
+
* sparc-sol2-tdep.c (sparc32_sol2_init_abi): Do not set
in_solib_call_trampoline to in_plt_entry, IN_SOLIB_CALL_TRAMPOLINE
isn't used by this architecture.
static const char arm_nbsd_thumb_le_breakpoint[] = {0xfe, 0xde};
static const char arm_nbsd_thumb_be_breakpoint[] = {0xde, 0xfe};
-static int
-arm_netbsd_aout_in_solib_call_trampoline (CORE_ADDR pc, char *name)
-{
- if (strcmp (name, "_PROCEDURE_LINKAGE_TABLE_") == 0)
- return 1;
-
- return 0;
-}
-
static void
arm_netbsd_init_abi_common (struct gdbarch_info info,
struct gdbarch *gdbarch)
return i386_pe_skip_trampoline_code (pc, NULL);
}
-static int
-i386_cygwin_in_solib_call_trampoline (CORE_ADDR pc, char *name)
-{
- return (i386_pe_skip_trampoline_code (pc, name) != 0);
-}
-
static void
i386_cygwin_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- set_gdbarch_in_solib_call_trampoline (gdbarch,
- i386_cygwin_in_solib_call_trampoline);
set_gdbarch_skip_trampoline_code (gdbarch, i386_cygwin_skip_trampoline_code);
tdep->struct_return = reg_struct_return;
/* Support for shared libraries. */
-/* Return non-zero if we are in a shared library trampoline code stub. */
-
-int
-i386bsd_aout_in_solib_call_trampoline (CORE_ADDR pc, char *name)
-{
- return (name && !strcmp (name, "_DYNAMIC"));
-}
-
/* Traditional BSD (4.3 BSD, still used for BSDI and 386BSD). */
/* From <machine/signal.h>. */
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- /* Assume SunOS-style shared libraries. */
- set_gdbarch_in_solib_call_trampoline (gdbarch,
- i386bsd_aout_in_solib_call_trampoline);
-
tdep->jb_pc_offset = 0;
tdep->sigtramp_start = 0xfdbfdfc0;
return NULL;
}
-\f
-
-/* Support for shared libraries. */
-
-/* Return non-zero if we are in a shared library trampoline code stub. */
-
-int
-m68kbsd_aout_in_solib_call_trampoline (CORE_ADDR pc, char *name)
-{
- return (name && !strcmp (name, "_DYNAMIC"));
-}
-\f
static void
m68kbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
m68kbsd_init_abi (info, gdbarch);
tdep->struct_return = reg_struct_return;
-
- /* Assume SunOS-style shared libraries. */
- set_gdbarch_in_solib_call_trampoline
- (gdbarch, m68kbsd_aout_in_solib_call_trampoline);
}
/* NetBSD ELF. */
set_gdbarch_skip_solib_resolver (gdbarch, mips_linux_skip_resolver);
set_gdbarch_software_single_step (gdbarch, mips_software_single_step);
-
- /* This overrides the MIPS16 stub support from mips-tdep. But no
- one uses MIPS16 on GNU/Linux yet, so this isn't much of a loss. */
- set_gdbarch_in_solib_call_trampoline (gdbarch, mips_linux_in_dynsym_stub);
}
void
return 0; /* not a stub */
}
-
-/* Return non-zero if the PC is inside a call thunk (aka stub or trampoline).
- This implements the IN_SOLIB_CALL_TRAMPOLINE macro. */
-
-static int
-mips_in_call_stub (CORE_ADDR pc, char *name)
-{
- CORE_ADDR start_addr;
-
- /* Find the starting address of the function containing the PC. If the
- caller didn't give us a name, look it up at the same time. */
- if (find_pc_partial_function (pc, name ? NULL : &name, &start_addr, NULL) ==
- 0)
- return 0;
-
- if (strncmp (name, "__mips16_call_stub_", 19) == 0)
- {
- /* If the PC is in __mips16_call_stub_{1..10}, this is a call stub. */
- if (name[19] >= '0' && name[19] <= '9')
- return 1;
- /* If the PC at the start of __mips16_call_stub_{s,d}f_{0..10}, i.e.
- before the jal instruction, this is effectively a call stub. */
- else if (name[19] == 's' || name[19] == 'd')
- return pc == start_addr;
- }
-
- return 0; /* not a stub */
-}
-
-
/* Return non-zero if the PC is inside a return thunk (aka stub or
trampoline). */
that supports both shared libraries and MIPS16, we'll have to find
a better place for these. */
if (info.osabi == GDB_OSABI_UNKNOWN)
- {
- set_gdbarch_in_solib_call_trampoline (gdbarch, mips_in_call_stub);
- set_gdbarch_in_solib_return_trampoline (gdbarch, mips_in_solib_return_trampoline);
- }
+ set_gdbarch_in_solib_return_trampoline (gdbarch, mips_in_solib_return_trampoline);
set_gdbarch_single_step_through_delay (gdbarch, mips_single_step_through_delay);
#include "ns32k-tdep.h"
#include "gdb_string.h"
-static int
-ns32knbsd_aout_in_solib_call_trampoline (CORE_ADDR pc, char *name)
-{
- if (strcmp (name, "_DYNAMIC") == 0)
- return 1;
-
- return 0;
-}
-
static void
ns32knbsd_init_abi_common (struct gdbarch_info info,
struct gdbarch *gdbarch)
struct gdbarch *gdbarch)
{
ns32knbsd_init_abi_common (info, gdbarch);
-
- set_gdbarch_in_solib_call_trampoline (gdbarch,
- ns32knbsd_aout_in_solib_call_trampoline);
}
static enum gdb_osabi
#define PPC64_STANDARD_LINKAGE_LEN \
(sizeof (ppc64_standard_linkage) / sizeof (ppc64_standard_linkage[0]))
-
-/* Recognize a 64-bit PowerPC GNU/Linux linkage function --- what GDB
- calls a "solib trampoline". */
-static int
-ppc64_in_solib_call_trampoline (CORE_ADDR pc, char *name)
-{
- /* Detecting solib call trampolines on PPC64 GNU/Linux is a pain.
-
- It's not specifically solib call trampolines that are the issue.
- Any call from one function to another function that uses a
- different TOC requires a trampoline, to save the caller's TOC
- pointer and then load the callee's TOC. An executable or shared
- library may have more than one TOC, so even intra-object calls
- may require a trampoline. Since executable and shared libraries
- will all have their own distinct TOCs, every inter-object call is
- also an inter-TOC call, and requires a trampoline --- so "solib
- call trampolines" are just a special case.
-
- The 64-bit PowerPC GNU/Linux ABI calls these call trampolines
- "linkage functions". Since they need to be near the functions
- that call them, they all appear in .text, not in any special
- section. The .plt section just contains an array of function
- descriptors, from which the linkage functions load the callee's
- entry point, TOC value, and environment pointer. So
- in_plt_section is useless. The linkage functions don't have any
- special linker symbols to name them, either.
-
- The only way I can see to recognize them is to actually look at
- their code. They're generated by ppc_build_one_stub and some
- other functions in bfd/elf64-ppc.c, so that should show us all
- the instruction sequences we need to recognize. */
- unsigned int insn[PPC64_STANDARD_LINKAGE_LEN];
-
- return insns_match_pattern (pc, ppc64_standard_linkage, insn);
-}
-
-
/* When the dynamic linker is doing lazy symbol resolution, the first
call to a function in another object will go like this:
function descriptors). */
set_gdbarch_convert_from_func_ptr_addr
(gdbarch, ppc64_linux_convert_from_func_ptr_addr);
-
- set_gdbarch_in_solib_call_trampoline
- (gdbarch, ppc64_in_solib_call_trampoline);
set_gdbarch_skip_trampoline_code (gdbarch, ppc64_skip_trampoline_code);
/* PPC64 malloc's entry-point is called ".malloc". */
}
\f
-/* Return non-zero if we are in a shared library trampoline code stub. */
-
-static int
-sparcnbsd_aout_in_solib_call_trampoline (CORE_ADDR pc, char *name)
-{
- return (name && !strcmp (name, "_DYNAMIC"));
-}
-
static void
sparc32nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
sparc32nbsd_aout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
sparc32nbsd_init_abi (info, gdbarch);
-
- set_gdbarch_in_solib_call_trampoline
- (gdbarch, sparcnbsd_aout_in_solib_call_trampoline);
}
static void
#include "gdb_string.h"
-/* Support for shared libraries. */
-
-/* Return non-zero if we are in a shared library trampoline code stub. */
-
-int
-vaxnbsd_aout_in_solib_call_trampoline (CORE_ADDR pc, char *name)
-{
- return (name && !strcmp (name, "_DYNAMIC"));
-}
-\f
-
/* NetBSD a.out. */
static void
vaxnbsd_aout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
- /* Assume SunOS-style shared libraries. */
- set_gdbarch_in_solib_call_trampoline
- (gdbarch, vaxnbsd_aout_in_solib_call_trampoline);
}
/* NetBSD ELF. */
projects / deliverable / binutils-gdb.git / commitdiff
