This module can read all four of the known byte-order combinations,
on any type of host. */
-#define TM_FILE_OVERRIDE
#include "defs.h"
-#include "tm-mips.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "gdbcore.h"
#include "stabsread.h"
#include "complaints.h"
+/* These are needed if the tm.h file does not contain the necessary
+ mips specific definitions. */
+
+#ifndef MIPS_EFI_SYMBOL_NAME
+#define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
+#include "coff/sym.h"
+#include "coff/symconst.h"
+typedef struct mips_extra_func_info {
+ long numargs;
+ PDR pdr;
+} *mips_extra_func_info_t;
+#ifndef RA_REGNUM
+#define RA_REGNUM 0
+#endif
+#ifndef FP0_REGNUM
+#define FP0_REGNUM 0
+#endif
+#endif
+
#ifdef USG
#include <sys/types.h>
#define L_SET 0
struct complaint pdr_static_symbol_complaint =
{"can't handle PDR for static proc at 0x%x", 0, 0};
+struct complaint bad_setjmp_pdr_complaint =
+{"fixing bad setjmp PDR from libc", 0, 0};
+
/* Macros and extra defs */
/* Already-parsed symbols are marked specially */
mipscoff_new_init (ignore)
struct objfile *ignore;
{
+ stabsread_new_init ();
+ buildsym_new_init ();
}
static void
printf_filtered ("Reading in symbols for %s...", pst->filename);
fflush (stdout);
}
- /* Get the BFD and list of pending typedefs */
- cur_bfd = CUR_BFD (pst);
next_symbol_text_func = mips_next_symbol_text;
e->pdr = *pr;
e->pdr.isym = (long) s;
e->pdr.adr += cur_fdr->adr - first_off;
+
+ /* Correct incorrect setjmp procedure descriptor from the library
+ to make backtrace through setjmp work. */
+ if (e->pdr.pcreg == 0 && strcmp (sh_name, "setjmp") == 0)
+ {
+ complain (&bad_setjmp_pdr_complaint, 0);
+ e->pdr.pcreg = RA_REGNUM;
+ e->pdr.regmask = 0x80000000;
+ e->pdr.regoffset = -4;
+ }
}
}
pst->dependencies[i]->filename);
}
+ /* Do nothing if this is a dummy psymtab. */
+
+ if (pst->n_global_syms == 0 && pst->n_static_syms == 0
+ && pst->textlow == 0 && pst->texthigh == 0)
+ return;
+
/* Now read the symbols for this symtab */
+ cur_bfd = CUR_BFD (pst);
current_objfile = pst->objfile;
cur_fd = FDR_IDX (pst);
fh = (cur_fd == -1) ? (FDR *) NULL : ecoff_data (cur_bfd)->fdr + cur_fd;
/* Handle encoded stab line number. */
record_line (current_subfile, sh.index, valu);
}
+ else if (sh.st == stProc || sh.st == stStaticProc || sh.st == stEnd)
+ /* These are generated by gcc-2.x, do not complain */
+ ;
else
complain (&stab_unknown_complaint, name);
}
- st = end_symtab (pst->texthigh, 0, 0, pst->objfile);
+ st = end_symtab (pst->texthigh, 0, 0, pst->objfile, SECT_OFF_TEXT);
end_stabs ();
/* Sort the symbol table now, we are done adding symbols to it.
/* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
MIPS' linenumber encoding might need more than one byte
- to describe it, LAST is used to detect these continuation lines */
+ to describe it, LAST is used to detect these continuation lines.
+
+ Combining lines with the same line number seems like a bad idea.
+ E.g: There could be a line number entry with the same line number after the
+ prologue and GDB should not ignore it (this is a better way to find
+ a prologue than mips_skip_prologue).
+ But due to the compressed line table format there are line number entries
+ for the same line which are needed to bridge the gap to the next
+ line number entry. These entries have a bogus address info with them
+ and we are unable to tell them from intended duplicate line number
+ entries.
+ This is another reason why -ggdb debugging format is preferable. */
static int
add_line (lt, lineno, adr, last)
addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2)));
if (addr_diff == 0)
- return (BLOCK_END ((*b1))) - (BLOCK_END ((*b2)));
+ return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1)));
return addr_diff;
}
sigtramp_address = -1;
- /* We know it is sold as sigvec */
+ /* 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_NAMESPACE, 0, NULL);
-
- /* Most programs do not play with signals */
- if (s == 0)
- s = lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE, 0, NULL);
- else
+ if (s != 0)
{
b0 = SYMBOL_BLOCK_VALUE (s);
-
- /* A label of sigvec, to be more precise */
s = lookup_symbol ("sigtramp", b0, VAR_NAMESPACE, 0, NULL);
}
+ if (s == 0)
+ {
+ /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
+ s = lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE, 0, NULL);
+ }
/* But maybe this program uses its own version of sigvec */
if (s == 0)
/* align_longword(sigcontext + SIGFRAME) */
e->pdr.frameoffset = 0x150;
e->pdr.framereg = SP_REGNUM;
- e->pdr.pcreg = 31;
+ /* read_next_frame_reg provides the true pc at the time of signal */
+ e->pdr.pcreg = PC_REGNUM;
e->pdr.regmask = -2;
e->pdr.regoffset = -(41 * sizeof (int));
e->pdr.fregmask = -1;
- e->pdr.fregoffset = -(37 * sizeof (int));
+ e->pdr.fregoffset = -(7 * sizeof (int));
e->pdr.isym = (long) s;
current_objfile = st->objfile; /* Keep new_symbol happy */
projects / deliverable / binutils-gdb.git / blobdiff