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Source info in discontiguous hand asm files
- From: Ross Morley <ross at tensilica dot com>
- To: GDB List <gdb at sources dot redhat dot com>
- Date: Wed, 03 May 2006 18:22:57 -0700
- Subject: Source info in discontiguous hand asm files
Hello,
gdb 6.1, as 2.15.92.0.2, gcc 3.4.2 per FC3 distro.
GDB fails to display source file and line info for functions in
two different sections in a hand-assembly source file.
A simple test-case that demonstrates the problem follows:
cat test.S
.text
.globl foo
foo:
nop
.globl main
#ifdef DIFFERENT_TEXT_SECTION
.section .text.with.another.name,"ax",@progbits
#endif
main:
nop
gcc test.S -Wa,--gdwarf2
gdb a.out
...
(gdb) b main
Breakpoint 1 at 0x804834f: file test.S, line 13.
(gdb) b foo
Breakpoint 2 at 0x8048347: file test.S, line 5.
(gdb) quit
gcc test.S -Wa,--gdwarf2 -DDIFFERENT_TEXT_SECTION
gdb a.out
...
(gdb) b main
Breakpoint 1 at 0x804834f
(gdb) b foo
Breakpoint 2 at 0x8048347
(gdb)
The DWARF .debug_aranges section seems to have enough information
to deal with this, but GDB doesn't use it.
We'd like to find a fix for this. Any enlightenment is appreciated.
Regards,
Ross Morley
Tensilica, Inc.