#include "gdbcmd.h"
#include "target.h"
-\f
-/* Last modification time of executable file.
- Also used in source.c to compare against mtime of a source file. */
-
-extern int exec_mtime;
-
-/* Virtual addresses of bounds of the two areas of memory in the core file. */
-
-/* extern CORE_ADDR data_start; */
-extern CORE_ADDR data_end;
-extern CORE_ADDR stack_start;
-extern CORE_ADDR stack_end;
-
-/* Virtual addresses of bounds of two areas of memory in the exec file.
- Note that the data area in the exec file is used only when there is no core file. */
-
-extern CORE_ADDR text_start;
-extern CORE_ADDR text_end;
-
-extern CORE_ADDR exec_data_start;
-extern CORE_ADDR exec_data_end;
-
-/* Address in executable file of start of text area data. */
-
-extern int text_offset;
-
-/* Address in executable file of start of data area data. */
-
-extern int exec_data_offset;
-
-/* Address in core file of start of data area data. */
-
-extern int data_offset;
-
-/* Address in core file of start of stack area data. */
-
-extern int stack_offset;
-
-struct header file_hdr;
-struct som_exec_auxhdr exec_hdr;
\f
/* Routines to extract various sized constants out of hppa
instructions. */
}
/* extract the immediate field from a ld{bhw}s instruction */
-
-
unsigned
get_field (val, from, to)
unsigned val, from, to;
find_unwind_entry(pc)
CORE_ADDR pc;
{
- static struct unwind_table_entry *unwind = NULL, *unwind_end;
- struct unwind_table_entry *u;
-
- if (!use_unwind)
- return NULL;
+ static struct unwind_table_entry *unwind = NULL;
+ static int unwind_last;
+ static int unwind_cache = -1;
+ int first, middle, last;
if (!unwind)
{
size = bfd_section_size (exec_bfd, unwind_sec);
unwind = malloc (size);
- unwind_end = unwind + size/sizeof (struct unwind_table_entry);
+ unwind_last = size / sizeof (struct unwind_table_entry) - 1;
bfd_get_section_contents (exec_bfd, unwind_sec, unwind, 0, size);
}
}
- for (u = unwind; u < unwind_end; u++)
+ if (unwind_cache > 0
+ && pc >= unwind[unwind_cache].region_start
+ && pc <= unwind[unwind_cache].region_end)
+ return &unwind[unwind_cache];
+
+ first = 0;
+ last = unwind_last;
+
+ while (first <= last)
{
- if (pc >= u->region_start
- && pc <= u->region_end)
- return u;
+ middle = (first + last) / 2;
+ if (pc >= unwind[middle].region_start
+ && pc <= unwind[middle].region_end)
+ return &unwind[middle];
+
+ if (pc < unwind[middle].region_start)
+ last = middle - 1;
+ else
+ first = middle + 1;
}
- return NULL;
+ return NULL;
}
static int
{
struct unwind_table_entry *u;
+ if (!use_unwind)
+ return -1;
+
u = find_unwind_entry (pc);
if (!u)
return u->Total_frame_size << 3;
}
+
+int
+rp_saved(pc)
+{
+ struct unwind_table_entry *u;
+
+ u = find_unwind_entry (pc);
+
+ if (!u)
+ return 0;
+
+ if (u->Save_RP)
+ return 1;
+ else
+ return 0;
+}
\f
CORE_ADDR
saved_pc_after_call (frame)
frame_saved_pc (frame)
FRAME frame;
{
- if (!frame->next)
+ CORE_ADDR pc = get_frame_pc (frame);
+
+ if (frameless_look_for_prologue (frame))
{
- CORE_ADDR pc = get_frame_pc (frame);
int ret_regnum;
ret_regnum = find_return_regnum (pc);
return read_register (ret_regnum) & ~0x3;
}
- return read_memory_integer (frame->frame - 20, 4) & ~0x3;
+ else if (rp_saved (pc))
+ return read_memory_integer (frame->frame - 20, 4) & ~0x3;
+ else
+ return read_register (RP_REGNUM) & ~0x3;
}
\f
/* We need to correct the PC and the FP for the outermost frame when we are
else
frame->frame = read_register (SP_REGNUM) - framesize;
- if (framesize != 0) /* Frameless? */
- return;
+ if (!frameless_look_for_prologue (frame)) /* Frameless? */
+ return; /* No, quit now */
/* For frameless functions, we need to look at the caller's frame */
framesize = find_proc_framesize(FRAME_SAVED_PC(frame));
/* To see if a frame chain is valid, see if the caller looks like it
was compiled with gcc. */
-int frame_chain_valid (chain, thisframe)
+int
+frame_chain_valid (chain, thisframe)
FRAME_ADDR chain;
FRAME thisframe;
{
- if (chain && (chain > 0x60000000))
- {
- CORE_ADDR pc = get_pc_function_start (FRAME_SAVED_PC (thisframe));
- if (inside_entry_file (pc))
- return 0;
- /* look for stw rp, -20(0,sp); copy 4,1; copy sp, 4 */
- if (read_memory_integer (pc, 4) == 0x6BC23FD9)
- pc = pc + 4;
-
- if (read_memory_integer (pc, 4) == 0x8040241 &&
- read_memory_integer (pc + 4, 4) == 0x81E0244)
- return 1;
- else
- return 0;
- }
- else
+ struct minimal_symbol *msym;
+
+ if (!chain)
return 0;
+
+ msym = lookup_minimal_symbol_by_pc (FRAME_SAVED_PC (thisframe));
+
+ if (msym
+ && (strcmp (SYMBOL_NAME (msym), "_start") == 0))
+ return 0;
+ else
+ return 1;
}
+#if 0
/* Some helper functions. gcc_p returns 1 if the function beginning at
pc appears to have been compiled with gcc. hpux_cc_p returns 1 if
fn was compiled with hpux cc. gcc functions look like :
if (read_memory_integer (pc, 4) == 0x6BC23FD9)
pc = pc + 4;
- if (read_memory_integer (pc, 4) == 0x8040241 &&
- read_memory_integer (pc + 4, 4) == 0x81E0244)
+ if (read_memory_integer (pc, 4) == 0x8040241
+ && read_memory_integer (pc + 4, 4) == 0x81E0244)
return 1;
return 0;
}
+#endif
/*
* These functions deal with saving and restoring register state
int
push_dummy_frame ()
{
- register CORE_ADDR sp = read_register (SP_REGNUM);
+ register CORE_ADDR sp;
register int regnum;
int int_buffer;
double freg_buffer;
+
/* Space for "arguments"; the RP goes in here. */
- sp += 48;
+ sp = read_register (SP_REGNUM) + 48;
int_buffer = read_register (RP_REGNUM) | 0x3;
write_memory (sp - 20, (char *)&int_buffer, 4);
+
int_buffer = read_register (FP_REGNUM);
write_memory (sp, (char *)&int_buffer, 4);
+
write_register (FP_REGNUM, sp);
+
sp += 8;
+
for (regnum = 1; regnum < 32; regnum++)
if (regnum != RP_REGNUM && regnum != FP_REGNUM)
sp = push_word (sp, read_register (regnum));
+
sp += 4;
+
for (regnum = FP0_REGNUM; regnum < NUM_REGS; regnum++)
- { read_register_bytes (REGISTER_BYTE (regnum), (char *)&freg_buffer, 8);
- sp = push_bytes (sp, (char *)&freg_buffer, 8);}
+ {
+ read_register_bytes (REGISTER_BYTE (regnum), (char *)&freg_buffer, 8);
+ sp = push_bytes (sp, (char *)&freg_buffer, 8);
+ }
sp = push_word (sp, read_register (IPSW_REGNUM));
sp = push_word (sp, read_register (SAR_REGNUM));
sp = push_word (sp, read_register (PCOQ_HEAD_REGNUM));
frame_saved_regs->regs[FP_REGNUM] = fp;
frame_saved_regs->regs[1] = fp + 8;
frame_saved_regs->regs[3] = fp + 12;
+
for (fp += 16, i = 5; i < 32; fp += 4, i++)
frame_saved_regs->regs[i] = fp;
+
fp += 4;
for (i = FP0_REGNUM; i < NUM_REGS; i++, fp += 8)
frame_saved_regs->regs[i] = fp;
- frame_saved_regs->regs[IPSW_REGNUM] = fp; fp += 4;
- frame_saved_regs->regs[SAR_REGNUM] = fp; fp += 4;
- frame_saved_regs->regs[PCOQ_HEAD_REGNUM] = fp; fp +=4;
- frame_saved_regs->regs[PCSQ_HEAD_REGNUM] = fp; fp +=4;
- frame_saved_regs->regs[PCOQ_TAIL_REGNUM] = fp; fp +=4;
+
+ frame_saved_regs->regs[IPSW_REGNUM] = fp;
+ fp += 4;
+ frame_saved_regs->regs[SAR_REGNUM] = fp;
+ fp += 4;
+ frame_saved_regs->regs[PCOQ_HEAD_REGNUM] = fp;
+ fp +=4;
+ frame_saved_regs->regs[PCSQ_HEAD_REGNUM] = fp;
+ fp +=4;
+ frame_saved_regs->regs[PCOQ_TAIL_REGNUM] = fp;
+ fp +=4;
frame_saved_regs->regs[PCSQ_TAIL_REGNUM] = fp;
}
struct frame_saved_regs fsr;
struct frame_info *fi;
double freg_buffer;
+
fi = get_frame_info (frame);
fp = fi->frame;
get_frame_saved_regs (fi, &fsr);
+
if (fsr.regs[IPSW_REGNUM]) /* Restoring a call dummy frame */
hp_restore_pc_queue (&fsr);
+
for (regnum = 31; regnum > 0; regnum--)
if (fsr.regs[regnum])
write_register (regnum, read_memory_integer (fsr.regs[regnum], 4));
+
for (regnum = NUM_REGS - 1; regnum >= FP0_REGNUM ; regnum--)
if (fsr.regs[regnum])
- { read_memory (fsr.regs[regnum], (char *)&freg_buffer, 8);
+ {
+ read_memory (fsr.regs[regnum], (char *)&freg_buffer, 8);
write_register_bytes (REGISTER_BYTE (regnum), (char *)&freg_buffer, 8);
}
+
if (fsr.regs[IPSW_REGNUM])
write_register (IPSW_REGNUM,
read_memory_integer (fsr.regs[IPSW_REGNUM], 4));
+
if (fsr.regs[SAR_REGNUM])
write_register (SAR_REGNUM,
read_memory_integer (fsr.regs[SAR_REGNUM], 4));
+
if (fsr.regs[PCOQ_TAIL_REGNUM])
write_register (PCOQ_TAIL_REGNUM,
read_memory_integer (fsr.regs[PCOQ_TAIL_REGNUM], 4));
+
write_register (FP_REGNUM, read_memory_integer (fp, 4));
+
if (fsr.regs[IPSW_REGNUM]) /* call dummy */
write_register (SP_REGNUM, fp - 48);
else
write_register (SP_REGNUM, fp);
+
flush_cached_frames ();
set_current_frame (create_new_frame (read_register (FP_REGNUM),
read_pc ()));
int insn_count;
/* Advance past break instruction in the call dummy. */
- pc += 4; write_register (PCOQ_HEAD_REGNUM, pc);
- pc += 4; write_register (PCOQ_TAIL_REGNUM, pc);
+ write_register (PCOQ_HEAD_REGNUM, pc + 4);
+ write_register (PCOQ_TAIL_REGNUM, pc + 8);
/*
* HPUX doesn't let us set the space registers or the space
for (i = 0; i < nargs; i++)
{
cum += TYPE_LENGTH (VALUE_TYPE (args[i]));
- /* value must go at proper alignment. Assume alignment is a
+
+ /* value must go at proper alignment. Assume alignment is a
power of two.*/
alignment = hp_alignof (VALUE_TYPE (args[i]));
if (cum % alignment)
offset[i] = -cum;
}
sp += min ((cum + 7) & -8, 16);
+
for (i = 0; i < nargs; i++)
- {
- write_memory (sp + offset[i], VALUE_CONTENTS (args[i]),
- TYPE_LENGTH (VALUE_TYPE (args[i])));
- }
+ write_memory (sp + offset[i], VALUE_CONTENTS (args[i]),
+ TYPE_LENGTH (VALUE_TYPE (args[i])));
+
if (struct_return)
write_register (28, struct_addr);
return sp + 32;
if (regnum == -1)
pa_print_registers (raw_regs, regnum, fpregs);
else if (regnum < FP0_REGNUM)
- {
- printf ("%s %x\n", reg_names[regnum], *(long *)(raw_regs +
- REGISTER_BYTE (regnum)));
- }
+ printf ("%s %x\n", reg_names[regnum], *(long *)(raw_regs +
+ REGISTER_BYTE (regnum)));
else
pa_print_fp_reg (regnum);
}
for (i = 0; i < 18; i++)
printf ("%8.8s: %8x %8.8s: %8x %8.8s: %8x %8.8s: %8x\n",
- reg_names[i],
- *(int *)(raw_regs + REGISTER_BYTE (i)),
- reg_names[i + 18],
- *(int *)(raw_regs + REGISTER_BYTE (i + 18)),
- reg_names[i + 36],
- *(int *)(raw_regs + REGISTER_BYTE (i + 36)),
- reg_names[i + 54],
- *(int *)(raw_regs + REGISTER_BYTE (i + 54)));
+ reg_names[i],
+ *(int *)(raw_regs + REGISTER_BYTE (i)),
+ reg_names[i + 18],
+ *(int *)(raw_regs + REGISTER_BYTE (i + 18)),
+ reg_names[i + 36],
+ *(int *)(raw_regs + REGISTER_BYTE (i + 36)),
+ reg_names[i + 54],
+ *(int *)(raw_regs + REGISTER_BYTE (i + 54)));
if (fpregs)
for (i = 72; i < NUM_REGS; i++)
val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, stdout, 0,
1, 0, Val_pretty_default);
printf_filtered ("\n");
-
}
/* Function calls that pass into a new compilation unit must pass through a
return pc;
}
+/* Advance PC across any function entry prologue instructions
+ to reach some "real" code. */
+
+/* skip (stw rp, -20(0,sp)); copy 4,1; copy sp, 4; stwm 1,framesize(sp)
+ for gcc, or (stw rp, -20(0,sp); stwm 1, framesize(sp) for hcc */
+
+CORE_ADDR
+skip_prologue(pc)
+ CORE_ADDR pc;
+{
+ int inst;
+ int status;
+
+ status = target_read_memory (pc, &inst, 4);
+ SWAP_TARGET_AND_HOST (&inst, sizeof (inst));
+ if (status != 0)
+ return pc;
+
+ if (inst == 0x6BC23FD9) /* stw rp,-20(sp) */
+ {
+ if (read_memory_integer (pc + 4, 4) == 0x8040241) /* copy r4,r1 */
+ pc += 16;
+ else if ((read_memory_integer (pc + 4, 4) & ~MASK_14) == 0x68810000) /* stw r1,(r4) */
+ pc += 8;
+ }
+ else if (read_memory_integer (pc, 4) == 0x8040241) /* copy r4,r1 */
+ pc += 12;
+ else if ((read_memory_integer (pc, 4) & ~MASK_14) == 0x68810000) /* stw r1,(r4) */
+ pc += 4;
+
+ return pc;
+}
+
static void
unwind_command (exp, from_tty)
char *exp;
#include <string.h>
#include "demangle.h"
#include <sys/file.h>
+#include "aout/aout64.h"
/* Various things we might complain about... */
int val;
char *stringtab;
struct symbol_dictionary_record *buf, *bufp;
+ CONST int symsize = sizeof (struct symbol_dictionary_record);
- number_of_symbols = obj_hp_sym_count (abfd);
+ number_of_symbols = bfd_get_symcount (abfd);
- buf = alloca (obj_hp_symbol_entry_size (abfd) * number_of_symbols);
- bfd_seek (abfd, obj_hp_sym_filepos (abfd), L_SET);
- val = bfd_read (buf, obj_hp_symbol_entry_size (abfd) * number_of_symbols,
- 1, abfd);
- if (val != obj_hp_symbol_entry_size (abfd) * number_of_symbols)
+ buf = alloca (symsize * number_of_symbols);
+ bfd_seek (abfd, obj_sym_filepos (abfd), L_SET);
+ val = bfd_read (buf, symsize * number_of_symbols, 1, abfd);
+ if (val != symsize * number_of_symbols)
error ("Couldn't read symbol dictionary!");
- stringtab = alloca (obj_hp_stringtab_size (abfd));
- bfd_seek (abfd, obj_hp_str_filepos (abfd), L_SET);
- val = bfd_read (stringtab, obj_hp_stringtab_size (abfd), 1, abfd);
- if (val != obj_hp_stringtab_size (abfd))
+ stringtab = alloca (obj_stringtab_size (abfd));
+ bfd_seek (abfd, obj_str_filepos (abfd), L_SET);
+ val = bfd_read (stringtab, obj_stringtab_size (abfd), 1, abfd);
+ if (val != obj_stringtab_size (abfd))
error ("Can't read in HP string table.");
for (i = 0, bufp = buf; i < number_of_symbols; i++, bufp++)
continue;
}
- if (bufp->name.n_strx > obj_hp_stringtab_size (abfd))
+ if (bufp->name.n_strx > obj_stringtab_size (abfd))
error ("Invalid symbol data; bad HP string table offset: %d",
bufp->name.n_strx);
}
}
-#if 0
-
-
-
-
-
- mainline,
- stabsect->filepos, /* .stab offset */
- bfd_get_section_size_before_reloc (stabsect), /* .stab size */
- stabstringsect->filepos, /* .stabstr offset */
- bfd_get_section_size_before_reloc (stabstringsect), /* .stabstr size */
- obj_dbx_symbol_entry_size (abfd));
-
-
-#endif
-
/* PA specific initialization routine for reading symbols.
It is passed a pointer to a struct sym_fns which contains, among other
int val;
bfd *sym_bfd = objfile->obfd;
char *name = bfd_get_filename (sym_bfd);
+ asection *stabsect; /* Section containing symbol table entries */
+ asection *stringsect; /* Section containing symbol name strings */
+
+ stabsect = bfd_get_section_by_name (sym_bfd, "$GDB_SYMBOLS$");
+ stringsect = bfd_get_section_by_name (sym_bfd, "$GDB_STRINGS$");
/* Allocate struct to keep track of the symfile */
objfile->sym_private = (PTR)
xmmalloc (objfile -> md, sizeof (struct dbx_symfile_info));
+ memset ((PTR) objfile->sym_private, 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 (obj_dbx_str_filepos (sym_bfd))
-#define SYMBOL_TABLE_OFFSET (obj_dbx_sym_filepos (sym_bfd))
+#define STRING_TABLE_OFFSET (stringsect->filepos)
+#define SYMBOL_TABLE_OFFSET (stabsect->filepos)
/* FIXME POKING INSIDE BFD DATA STRUCTURES */
if (!DBX_TEXT_SECT (objfile))
error ("Can't find .text section in symbol file");
- DBX_SYMBOL_SIZE (objfile) = obj_dbx_symbol_entry_size (sym_bfd);
- DBX_SYMCOUNT (objfile) = obj_dbx_sym_count (sym_bfd);
+ DBX_SYMBOL_SIZE (objfile) = sizeof (struct internal_nlist);
+ DBX_SYMCOUNT (objfile) = bfd_section_size (sym_bfd, stabsect)
+ / DBX_SYMBOL_SIZE (objfile);
DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET;
/* Read the string table and stash it away in the psymbol_obstack. It is
however at least check to see if the size is zero or some negative
value. */
- DBX_STRINGTAB_SIZE (objfile) = obj_dbx_stringtab_size (sym_bfd);
+ DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (sym_bfd, stringsect);
if (DBX_SYMCOUNT (objfile) == 0
|| DBX_STRINGTAB_SIZE (objfile) == 0)
projects / binutils-gdb.git / commitdiff