static void
pa_symfile_init PARAMS ((struct objfile *));
+static int
+compare_unwind_entries PARAMS ((struct unwind_table_entry *,
+ struct unwind_table_entry *));
+
static void
pa_new_init PARAMS ((struct objfile *));
struct objfile *objfile;
{
name = obsavestring (name, strlen (name), &objfile -> symbol_obstack);
- prim_record_minimal_symbol (name, address, ms_type);
+ prim_record_minimal_symbol (name, address, ms_type, objfile);
}
/*
case ST_MILLICODE:
symname = bufp->name.n_strx + stringtab;
ms_type = mst_text;
- bufp->symbol_value &= ~0x3; /* clear out permission bits */
+#ifdef SMASH_TEXT_ADDRESS
+ SMASH_TEXT_ADDRESS (bufp->symbol_value);
+#endif
break;
case ST_DATA:
symname = bufp->name.n_strx + stringtab;
case ST_CODE:
symname = bufp->name.n_strx + stringtab;
ms_type = mst_file_text;
- bufp->symbol_value &= ~0x3; /* clear out permission bits */
+#ifdef SMASH_TEXT_ADDRESS
+ SMASH_TEXT_ADDRESS (bufp->symbol_value);
+#endif
check_strange_names:
- /* GAS leaves symbols with the prefixes "LS$", "LBB$",
- and "LBE$" in .o files after assembling. And thus
- they appear in the final executable. This can
- cause problems if these special symbols have the
- same value as real symbols. So ignore them. Also "LC$". */
+ /* GAS leaves labels in .o files after assembling. At
+ least labels starting with "LS$", "LBB$", "LBE$",
+ "LC$", and "L$" can happen. This should be fixed in
+ the assembler and/or compiler, to save space in the
+ executable (and because having GDB make gross
+ distinctions based on the name is kind of ugly), but
+ until then, just ignore them. ("L$" at least, has something
+ to do with getting relocation correct, so that one might
+ be hard to fix). */
if (*symname == 'L'
&& (symname[1] == '$' || symname[2] == '$'
|| symname[3] == '$'))
case ST_MILLICODE:
symname = bufp->name.n_strx + stringtab;
ms_type = mst_file_text;
- bufp->symbol_value &= ~0x3; /* clear out permission bits */
+#ifdef SMASH_TEXT_ADDRESS
+ SMASH_TEXT_ADDRESS (bufp->symbol_value);
+#endif
break;
case ST_DATA:
install_minimal_symbols (objfile);
}
+/* Compare the start address for two unwind entries returning 1 if
+ the first address is larger than the second, -1 if the second is
+ larger than the first, and zero if they are equal. */
+
+static int
+compare_unwind_entries (a, b)
+ struct unwind_table_entry *a;
+ struct unwind_table_entry *b;
+{
+ if (a->region_start > b->region_start)
+ return 1;
+ else if (a->region_start < b->region_start)
+ return -1;
+ else
+ return 0;
+}
+
/* Read in the backtrace information stored in the `$UNWIND_START$' section of
the object file. This info is used mainly by find_unwind_entry() to find
out the stack frame size and frame pointer used by procedures. We put
read_unwind_info (objfile)
struct objfile *objfile;
{
- asection *unwind_sec;
+ asection *unwind_sec, *stub_unwind_sec;
+ unsigned unwind_size, stub_unwind_size, total_size;
+ unsigned index, unwind_entries, stub_entries, total_entries;
struct obj_unwind_info *ui;
ui = obstack_alloc (&objfile->psymbol_obstack,
ui->cache = NULL;
ui->last = -1;
- unwind_sec = bfd_get_section_by_name (objfile->obfd,
- "$UNWIND_START$");
+ /* Get hooks to both unwind sections. */
+ unwind_sec = bfd_get_section_by_name (objfile->obfd, "$UNWIND_START$");
+ stub_unwind_sec = bfd_get_section_by_name (objfile->obfd, "$UNWIND_END$");
+
+ /* Get sizes and unwind counts for both sections. */
if (unwind_sec)
{
- int size;
- int i, *ip;
+ unwind_size = bfd_section_size (objfile->obfd, unwind_sec);
+ unwind_entries = unwind_size / UNWIND_ENTRY_SIZE;
+ }
+ else
+ {
+ unwind_size = 0;
+ unwind_entries = 0;
+ }
+
+ if (stub_unwind_sec)
+ {
+ stub_unwind_size = bfd_section_size (objfile->obfd, stub_unwind_sec);
+ stub_entries = stub_unwind_size / STUB_UNWIND_ENTRY_SIZE;
+ }
+ else
+ {
+ stub_unwind_size = 0;
+ stub_entries = 0;
+ }
+
+ /* Compute total number of stubs. */
+ total_entries = unwind_entries + stub_entries;
+ total_size = total_entries * sizeof (struct unwind_table_entry);
- size = bfd_section_size (objfile->obfd, unwind_sec);
- ui->table = obstack_alloc (&objfile->psymbol_obstack, size);
- ui->last = size / sizeof (struct unwind_table_entry) - 1;
+ /* Allocate memory for the unwind table. */
+ ui->table = obstack_alloc (&objfile->psymbol_obstack, total_size);
+ ui->last = total_entries + 1;
- bfd_get_section_contents (objfile->obfd, unwind_sec, ui->table,
- 0, size);
+ /* We will read the unwind entries into temporary memory, then
+ fill in the actual unwind table. */
+ if (unwind_size > 0)
+ {
+ unsigned long tmp;
+ unsigned i;
+ char *buf = alloca (unwind_size);
+
+ bfd_get_section_contents (objfile->obfd, unwind_sec, buf, 0, unwind_size);
+
+ /* Now internalize the information being careful to handle host/target
+ endian issues. */
+ for (i = 0; i < unwind_entries; i++)
+ {
+ ui->table[i].region_start = bfd_get_32 (objfile->obfd,
+ (bfd_byte *)buf);
+ buf += 4;
+ ui->table[i].region_end = bfd_get_32 (objfile->obfd, (bfd_byte *)buf);
+ buf += 4;
+ tmp = bfd_get_32 (objfile->obfd, (bfd_byte *)buf);
+ buf += 4;
+ ui->table[i].Cannot_unwind = (tmp >> 31) & 0x1;;
+ ui->table[i].Millicode = (tmp >> 30) & 0x1;
+ ui->table[i].Millicode_save_sr0 = (tmp >> 29) & 0x1;
+ ui->table[i].Region_description = (tmp >> 27) & 0x3;
+ ui->table[i].reserved1 = (tmp >> 26) & 0x1;
+ ui->table[i].Entry_SR = (tmp >> 25) & 0x1;
+ ui->table[i].Entry_FR = (tmp >> 21) & 0xf;
+ ui->table[i].Entry_GR = (tmp >> 16) & 0x1f;
+ ui->table[i].Args_stored = (tmp >> 15) & 0x1;
+ ui->table[i].Variable_Frame = (tmp >> 14) & 0x1;
+ ui->table[i].Separate_Package_Body = (tmp >> 13) & 0x1;
+ ui->table[i].Frame_Extension_Millicode = (tmp >> 12 ) & 0x1;
+ ui->table[i].Stack_Overflow_Check = (tmp >> 11) & 0x1;
+ ui->table[i].Two_Instruction_SP_Increment = (tmp >> 10) & 0x1;
+ ui->table[i].Ada_Region = (tmp >> 9) & 0x1;
+ ui->table[i].reserved2 = (tmp >> 5) & 0xf;
+ ui->table[i].Save_SP = (tmp >> 4) & 0x1;
+ ui->table[i].Save_RP = (tmp >> 3) & 0x1;
+ ui->table[i].Save_MRP_in_frame = (tmp >> 2) & 0x1;
+ ui->table[i].extn_ptr_defined = (tmp >> 1) & 0x1;
+ ui->table[i].Cleanup_defined = tmp & 0x1;
+ tmp = bfd_get_32 (objfile->obfd, (bfd_byte *)buf);
+ buf += 4;
+ ui->table[i].MPE_XL_interrupt_marker = (tmp >> 31) & 0x1;
+ ui->table[i].HP_UX_interrupt_marker = (tmp >> 30) & 0x1;
+ ui->table[i].Large_frame = (tmp >> 29) & 0x1;
+ ui->table[i].reserved4 = (tmp >> 27) & 0x3;
+ ui->table[i].Total_frame_size = tmp & 0x7ffffff;
+ }
+
+ }
+
+ if (stub_unwind_size > 0)
+ {
+ unsigned int i;
+ char *buf = alloca (stub_unwind_size);
+
+ /* Read in the stub unwind entries. */
+ bfd_get_section_contents (objfile->obfd, stub_unwind_sec, buf,
+ 0, stub_unwind_size);
+
+ /* Now convert them into regular unwind entries. */
+ index = unwind_entries;
+ for (i = 0; i < stub_entries; i++, index++)
+ {
+ /* Clear out the next unwind entry. */
+ memset (&ui->table[index], 0, sizeof (struct unwind_table_entry));
+
+ /* Convert offset & size into region_start and region_end.
+ Stuff away the stub type into "reserved" fields. */
+ ui->table[index].region_start = bfd_get_32 (objfile->obfd,
+ (bfd_byte *) buf);
+ buf += 4;
+ ui->table[index].stub_type = bfd_get_8 (objfile->obfd,
+ (bfd_byte *) buf);
+ buf += 2;
+ ui->table[index].region_end
+ = ui->table[index].region_start + 4 * bfd_get_16 (objfile->obfd,
+ (bfd_byte *) buf);
+ buf += 2;
+ }
- OBJ_UNWIND_INFO (objfile) = ui;
}
+
+ /* Unwind table needs to be kept sorted. */
+ qsort (ui->table, total_entries, sizeof (struct unwind_table_entry),
+ compare_unwind_entries);
+
+ /* Keep a pointer to the unwind information. */
+ objfile->obj_private = (PTR) ui;
}
/* Scan and build partial symbols for a symbol file.
memset ((PTR) objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info));
- if (!stabsect)
- return;
-
- if (!stringsect)
- error ("Found stabs, but not string section");
/* FIXME POKING INSIDE BFD DATA STRUCTURES */
#define STRING_TABLE_OFFSET (stringsect->filepos)
/* FIXME POKING INSIDE BFD DATA STRUCTURES */
DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL;
- DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, ".text");
+ DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, "$TEXT$");
if (!DBX_TEXT_SECT (objfile))
- error ("Can't find .text section in symbol file");
+ error ("Can't find $TEXT$ section in symbol file");
+ if (!stabsect)
+ return;
+
+ if (!stringsect)
+ error ("Found stabs, but not string section");
+
/* FIXME: I suspect this should be external_nlist. The size of host
types like long and bfd_vma should not affect how we read the
file. */
static struct sym_fns pa_sym_fns =
{
- bfd_target_som_flavour
+ bfd_target_som_flavour,
pa_new_init, /* sym_new_init: init anything gbl to entire symtab */
pa_symfile_init, /* sym_init: read initial info, setup for sym_read() */
pa_symfile_read, /* sym_read: read a symbol file into symtab */
projects / deliverable / binutils-gdb.git / blobdiff