winedbg and global variables
Richard Cohen
richard.cohen at virgin.net
Wed Aug 6 11:08:12 CDT 2003
winedbg is getting the addresses of global symbols wrong - I'm running
Debian testing/unstable.
||/ Name Version Description
+++-=========-================-======================================
ii gcc 3.3-1 The GNU C compiler.
ii binutils 2.14.90.0.4-0.1 The GNU assembler, linker and binary
utilities.
ii gcc-3.3 3.3.1-0pre0 The GNU C compiler
gcc 2.95 & 3.2 seem to behave the same. Perhaps it's a linker problem?
Anyway this patch fixes it (and it matches the existing comment).
Changelog
+ Use the ELF sections for the addresses of globals, as the
STABS are likely to be wrong
-------------- next part --------------
diff -u programs/winedbg.1/hash.c programs/winedbg/hash.c
--- programs/winedbg.1/hash.c 2003-07-17 08:49:18.000000000 +0100
+++ programs/winedbg/hash.c 2003-08-06 16:42:18.000000000 +0100
@@ -225,7 +225,9 @@
* - a second time with the correct address
* SYM_INVALID is set for the first pass, and cleared in the second
* the code below gets most of information for both passes
- * latest GCC version seem to provide correct address in first pass,
+ *
+ * some GCC versions may provide the correct address in the first pass
+ * but it does not seem to be sensible to rely on that.
*/
if (nh->value.addr.seg == 0 && nh->value.addr.off == 0 && c != 0)
{
diff -u programs/winedbg.1/stabs.c programs/winedbg/stabs.c
--- programs/winedbg.1/stabs.c 2003-05-05 20:01:02.000000000 +0100
+++ programs/winedbg/stabs.c 2003-07-21 20:35:19.000000000 +0100
@@ -980,16 +980,17 @@
*
* With a.out or mingw, they actually do make some amount of sense.
*/
- new_value.addr.seg = 0;
new_value.type = DEBUG_ParseStabType(ptr);
- new_value.addr.off = (unsigned long)load_offset + stab_ptr->n_value;
+ new_value.addr.seg = 0;
new_value.cookie = DV_TARGET;
stab_strcpy(symname, sizeof(symname), ptr);
#ifdef __ELF__
+ new_value.addr.off = 0;
curr_sym = DEBUG_AddSymbol( symname, &new_value, currpath,
SYM_WINE | SYM_DATA | SYM_INVALID );
#else
+ new_value.addr.off = (unsigned long)load_offset + stab_ptr->n_value;
curr_sym = DEBUG_AddSymbol( symname, &new_value, currpath,
SYM_WINE | SYM_DATA );
#endif
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