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2004-04-30 Andrew Cagney <cagney@redhat.com>

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* mips-tdep.c (mips_pc_in_sigtramp): Delete.
	(mips_gdbarch_init): Do not set pc_in_sigtramp.
	* mipsread.c (sigtramp_address): Delete extern variable.
	(mipscoff_new_init): Delete reference.
	* mdebugread.c (sigtramp_address, sigtramp_end): Delete variables.
	(fixup_sigtramp): Delete function.
	* config/mips/tm-mips.h (sigtramp_address, sigtramp_end)
	(fixup_sigtramp): Delete declarations.
This commit is contained in:
Andrew Cagney 2004-05-01 00:34:55 +00:00
parent 2593d1cdad
commit 36710c632c
5 changed files with 9 additions and 142 deletions
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9
gdb/ChangeLog
View File

@ -1,5 +1,14 @@
2004-04-30 Andrew Cagney <cagney@redhat.com>
* mips-tdep.c (mips_pc_in_sigtramp): Delete.
(mips_gdbarch_init): Do not set pc_in_sigtramp.
* mipsread.c (sigtramp_address): Delete extern variable.
(mipscoff_new_init): Delete reference.
* mdebugread.c (sigtramp_address, sigtramp_end): Delete variables.
(fixup_sigtramp): Delete function.
* config/mips/tm-mips.h (sigtramp_address, sigtramp_end)
(fixup_sigtramp): Delete declarations.
* ppcnbsd-tdep.c (ppcnbsd_init_abi): Do not set
deprecated_pc_in_sigtramp.
(ppcnbsd_pc_in_sigtramp): Delete function.

4
gdb/config/mips/tm-mips.h
View File

@ -99,10 +99,6 @@ typedef struct mips_extra_func_info
#define SETUP_ARBITRARY_FRAME(argc, argv) setup_arbitrary_frame (argc, argv)
extern struct frame_info *setup_arbitrary_frame (int, CORE_ADDR *);
/* These are defined in mdebugread.c and are used in mips-tdep.c */
extern CORE_ADDR sigtramp_address, sigtramp_end;
extern void fixup_sigtramp (void);
/* Functions for dealing with MIPS16 call and return stubs. */
#define IGNORE_HELPER_CALL(pc) mips_ignore_helper (pc)
extern int mips_ignore_helper (CORE_ADDR pc);

124
gdb/mdebugread.c
View File

@ -321,10 +321,6 @@ static void handle_psymbol_enumerators (struct objfile *, FDR *, int,
static char *mdebug_next_symbol_text (struct objfile *);
/* Address bounds for the signal trampoline in inferior, if any */
CORE_ADDR sigtramp_address, sigtramp_end;
/* Allocate zeroed memory */
static void *
@ -4751,126 +4747,6 @@ elfmdebug_build_psymtabs (struct objfile *objfile,
install_minimal_symbols (objfile);
do_cleanups (back_to);
}
/* Things used for calling functions in the inferior.
These functions are exported to our companion
mips-tdep.c file and are here because they play
with the symbol-table explicitly. */
/* Sigtramp: make sure we have all the necessary information
about the signal trampoline code. Since the official code
from MIPS does not do so, we make up that information ourselves.
If they fix the library (unlikely) this code will neutralize itself. */
/* FIXME: This function is called only by mips-tdep.c. It needs to be
here because it calls functions defined in this file, but perhaps
this could be handled in a better way. Only compile it in when
tm-mips.h is included. */
#ifdef TM_MIPS_H
void
fixup_sigtramp (void)
{
struct symbol *s;
struct symtab *st;
struct block *b, *b0 = NULL;
sigtramp_address = -1;
/* We have to handle the following cases here:
a) The Mips library has a sigtramp label within sigvec.
b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
s = lookup_symbol ("sigvec", 0, VAR_DOMAIN, 0, NULL);
if (s != 0)
{
b0 = SYMBOL_BLOCK_VALUE (s);
s = lookup_symbol ("sigtramp", b0, VAR_DOMAIN, 0, NULL);
}
if (s == 0)
{
/* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
s = lookup_symbol ("_sigtramp", 0, VAR_DOMAIN, 0, NULL);
}
/* But maybe this program uses its own version of sigvec */
if (s == 0)
return;
/* Did we or MIPSco fix the library ? */
if (SYMBOL_CLASS (s) == LOC_BLOCK)
{
sigtramp_address = BLOCK_START (SYMBOL_BLOCK_VALUE (s));
sigtramp_end = BLOCK_END (SYMBOL_BLOCK_VALUE (s));
return;
}
sigtramp_address = SYMBOL_VALUE (s);
sigtramp_end = sigtramp_address + 0x88; /* black magic */
/* But what symtab does it live in ? */
st = find_pc_symtab (SYMBOL_VALUE (s));
/*
* Ok, there goes the fix: turn it into a procedure, with all the
* needed info. Note we make it a nested procedure of sigvec,
* which is the way the (assembly) code is actually written.
*/
SYMBOL_DOMAIN (s) = VAR_DOMAIN;
SYMBOL_CLASS (s) = LOC_BLOCK;
SYMBOL_TYPE (s) = init_type (TYPE_CODE_FUNC, 4, 0, (char *) NULL,
st->objfile);
TYPE_TARGET_TYPE (SYMBOL_TYPE (s)) = mdebug_type_void;
/* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
b = new_block (NON_FUNCTION_BLOCK);
SYMBOL_BLOCK_VALUE (s) = b;
BLOCK_START (b) = sigtramp_address;
BLOCK_END (b) = sigtramp_end;
BLOCK_FUNCTION (b) = s;
BLOCK_SUPERBLOCK (b) = BLOCK_SUPERBLOCK (b0);
add_block (b, st);
sort_blocks (st);
/* Make a MIPS_EFI_SYMBOL_NAME entry for it */
{
struct mips_extra_func_info *e =
((struct mips_extra_func_info *)
xzalloc (sizeof (struct mips_extra_func_info)));
e->numargs = 0; /* the kernel thinks otherwise */
e->pdr.frameoffset = 32;
e->pdr.framereg = SP_REGNUM;
/* Note that setting pcreg is no longer strictly necessary as
mips_frame_saved_pc is now aware of signal handler frames. */
e->pdr.pcreg = PC_REGNUM;
e->pdr.regmask = -2;
/* Offset to saved r31, in the sigtramp case the saved registers
are above the frame in the sigcontext.
We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
and 32 * 4 bytes for the floating point registers. */
e->pdr.regoffset = 4 + 12 + 31 * 4;
e->pdr.fregmask = -1;
/* Offset to saved f30 (first saved *double* register). */
e->pdr.fregoffset = 4 + 12 + 32 * 4 + 12 + 30 * 4;
e->pdr.isym = (long) s;
e->pdr.adr = sigtramp_address;
current_objfile = st->objfile; /* Keep new_symbol happy */
s = new_symbol (MIPS_EFI_SYMBOL_NAME);
SYMBOL_VALUE (s) = (long) e;
SYMBOL_DOMAIN (s) = LABEL_DOMAIN;
SYMBOL_CLASS (s) = LOC_CONST;
SYMBOL_TYPE (s) = mdebug_type_void;
current_objfile = NULL;
}
dict_add_symbol (BLOCK_DICT (b), s);
}
#endif /* TM_MIPS_H */
void
_initialize_mdebugread (void)

11
gdb/mips-tdep.c
View File

@ -4841,16 +4841,6 @@ mips_skip_prologue (CORE_ADDR pc)
return mips32_skip_prologue (pc);
}
/* Exported procedure: Is PC in the signal trampoline code */
static int
mips_pc_in_sigtramp (CORE_ADDR pc, char *ignore)
{
if (sigtramp_address == 0)
fixup_sigtramp ();
return (pc >= sigtramp_address && pc < sigtramp_end);
}
/* Root of all "set mips "/"show mips " commands. This will eventually be
used for all MIPS-specific commands. */
@ -5781,7 +5771,6 @@ mips_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_register_type (gdbarch, mips_register_type);
set_gdbarch_print_registers_info (gdbarch, mips_print_registers_info);
set_gdbarch_deprecated_pc_in_sigtramp (gdbarch, mips_pc_in_sigtramp);
set_gdbarch_print_insn (gdbarch, gdb_print_insn_mips);

3
gdb/mipsread.c
View File

@ -59,12 +59,9 @@ read_alphacoff_dynamic_symtab (struct section_offsets *,
symbol file is specified (not just adding some symbols from another
file, e.g. a shared library). */
extern CORE_ADDR sigtramp_address;
static void
mipscoff_new_init (struct objfile *ignore)
{
sigtramp_address = 0;
stabsread_new_init ();
buildsym_new_init ();
}