#include "osabi.h"
#include "arm-tdep.h"
-
-/* For shared library handling. */
-#include "symtab.h"
-#include "symfile.h"
-#include "objfiles.h"
+#include "glibc-tdep.h"
/* Under ARM GNU/Linux the traditional way of performing a breakpoint
is to execute a particular software interrupt, rather than use a
static const char arm_linux_arm_be_breakpoint[] = { 0xef, 0x9f, 0x00, 0x01 };
-/* DEPRECATED_CALL_DUMMY_WORDS:
- This sequence of words is the instructions
-
- mov lr, pc
- mov pc, r4
- swi bkpt_swi
-
- Note this is 12 bytes. */
-
-LONGEST arm_linux_call_dummy_words[] =
-{
- 0xe1a0e00f, 0xe1a0f004, 0xef9f001
-};
-
/* Description of the longjmp buffer. */
-#define ARM_LINUX_JB_ELEMENT_SIZE INT_REGISTER_RAW_SIZE
+#define ARM_LINUX_JB_ELEMENT_SIZE INT_REGISTER_SIZE
#define ARM_LINUX_JB_PC 21
/* Extract from an array REGBUF containing the (raw) register state
/* ANSI C code passes float arguments as integers, K&R code
passes float arguments as doubles. Correct for this here. */
if (TYPE_CODE_FLT == TYPE_CODE (arg_type) && DEPRECATED_REGISTER_SIZE == len)
- nstack_size += FP_REGISTER_VIRTUAL_SIZE;
+ nstack_size += TARGET_DOUBLE_BIT / TARGET_CHAR_BIT;
else
nstack_size += len;
}
with. Before the fixup/resolver code returns, it actually calls
the requested function and repairs &GOT[n+3]. */
-/* Find the minimal symbol named NAME, and return both the minsym
- struct and its objfile. This probably ought to be in minsym.c, but
- everything there is trying to deal with things like C++ and
- SOFUN_ADDRESS_MAYBE_TURQUOISE, ... Since this is so simple, it may
- be considered too special-purpose for general consumption. */
-
-static struct minimal_symbol *
-find_minsym_and_objfile (char *name, struct objfile **objfile_p)
-{
- struct objfile *objfile;
-
- ALL_OBJFILES (objfile)
- {
- struct minimal_symbol *msym;
-
- ALL_OBJFILE_MSYMBOLS (objfile, msym)
- {
- if (DEPRECATED_SYMBOL_NAME (msym)
- && strcmp (DEPRECATED_SYMBOL_NAME (msym), name) == 0)
- {
- *objfile_p = objfile;
- return msym;
- }
- }
- }
-
- return 0;
-}
-
-
/* Fetch, and possibly build, an appropriate link_map_offsets structure
for ARM linux targets using the struct offsets defined in <link.h>.
Note, however, that link.h is not actually referred to in this file.
return lmp;
}
-static CORE_ADDR
-skip_hurd_resolver (CORE_ADDR pc)
-{
- /* The HURD dynamic linker is part of the GNU C library, so many
- GNU/Linux distributions use it. (All ELF versions, as far as I
- know.) An unresolved PLT entry points to "_dl_runtime_resolve",
- which calls "fixup" to patch the PLT, and then passes control to
- the function.
-
- We look for the symbol `_dl_runtime_resolve', and find `fixup' in
- the same objfile. If we are at the entry point of `fixup', then
- we set a breakpoint at the return address (at the top of the
- stack), and continue.
-
- It's kind of gross to do all these checks every time we're
- called, since they don't change once the executable has gotten
- started. But this is only a temporary hack --- upcoming versions
- of GNU/Linux will provide a portable, efficient interface for
- debugging programs that use shared libraries. */
-
- struct objfile *objfile;
- struct minimal_symbol *resolver
- = find_minsym_and_objfile ("_dl_runtime_resolve", &objfile);
-
- if (resolver)
- {
- struct minimal_symbol *fixup
- = lookup_minimal_symbol ("fixup", NULL, objfile);
-
- if (fixup && SYMBOL_VALUE_ADDRESS (fixup) == pc)
- return (DEPRECATED_SAVED_PC_AFTER_CALL (get_current_frame ()));
- }
-
- return 0;
-}
-
-/* See the comments for SKIP_SOLIB_RESOLVER at the top of infrun.c.
- This function:
- 1) decides whether a PLT has sent us into the linker to resolve
- a function reference, and
- 2) if so, tells us where to set a temporary breakpoint that will
- trigger when the dynamic linker is done. */
-
-CORE_ADDR
-arm_linux_skip_solib_resolver (CORE_ADDR pc)
-{
- CORE_ADDR result;
-
- /* Plug in functions for other kinds of resolvers here. */
- result = skip_hurd_resolver (pc);
-
- if (result)
- return result;
-
- return 0;
-}
-
/* The constants below were determined by examining the following files
in the linux kernel sources:
set_solib_svr4_fetch_link_map_offsets
(gdbarch, arm_linux_svr4_fetch_link_map_offsets);
- set_gdbarch_deprecated_call_dummy_words (gdbarch, arm_linux_call_dummy_words);
- set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch, sizeof (arm_linux_call_dummy_words));
-
/* The following two overrides shouldn't be needed. */
set_gdbarch_deprecated_extract_return_value (gdbarch, arm_linux_extract_return_value);
set_gdbarch_deprecated_push_arguments (gdbarch, arm_linux_push_arguments);
/* Shared library handling. */
set_gdbarch_in_solib_call_trampoline (gdbarch, in_plt_section);
set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
+ set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver);
}
void
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