mirrors/binutils-gdb
0
0
Fork 0
mirror of https://sourceware.org/git/binutils-gdb.git synced 2025-01-18 05:54:26 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

* x86-64-tdep.c (x86_64_skip_prologue): Print note when debugging

Browse Source 
code without frame pointers.
This commit is contained in:
Andrew Cagney 2002-04-27 00:12:54 +00:00
parent e32eb77491
commit b6779aa276
2 changed files with 24 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
gdb/ChangeLog
View File

@ -1,3 +1,8 @@
2002-04-26 Michal Ludvig <mludvig@suse.cz>
* x86-64-tdep.c (x86_64_skip_prologue): Print note when debugging
code without frame pointers.
2002-04-26 Andrew Cagney <ac131313@redhat.com>
* sparc-tdep.c (sparc_gdbarch_init): Add comment explaining why

22
gdb/x86-64-tdep.c
View File

@ -116,6 +116,9 @@ static struct register_info x86_64_register_info_table[] = {
int x86_64_num_regs = X86_64_NUM_REGS;
int x86_64_num_gregs = X86_64_NUM_GREGS;
/* Did we already print a note about frame pointer? */
int omit_fp_note_printed = 0;
/* Number of bytes of storage in the actual machine representation for
register REGNO. */
int
@ -811,10 +814,23 @@ x86_64_skip_prologue (CORE_ADDR pc)
read_memory (pc, (char *) prolog_buf, PROLOG_BUFSIZE);
/* First check, whether pc points to pushq %rbp, movq %rsp,%rbp. */
for (i = 0; i < PROLOG_BUFSIZE; i++)
if (prolog_expect[i] != prolog_buf[i])
/* First check, whether pc points to pushq %rbp. If not,
* print a recommendation to enable frame pointer. */
if (prolog_expect[0] != prolog_buf[0])
{
if (!omit_fp_note_printed)
{
printf_filtered
("NOTE: This function doesn't seem to have a valid prologue.\n"
" Try to add -fno-omit-frame-pointer tou your gcc's CFLAGS.\n");
omit_fp_note_printed++;
}
return pc;
}
/* Valid prolog continues with movq %rsp,%rbp. */
for (i = 1; i < PROLOG_BUFSIZE; i++)
if (prolog_expect[i] != prolog_buf[i])
return pc + 1; /* First instruction after pushq %rbp. */
v_function = find_pc_function (pc);
v_sal = find_pc_line (pc, 0);