diff options
Diffstat (limited to 'gdb/ppc-sysv-tdep.c')
| -rw-r--r-- | gdb/ppc-sysv-tdep.c | 40 |
1 files changed, 26 insertions, 14 deletions
diff --git a/gdb/ppc-sysv-tdep.c b/gdb/ppc-sysv-tdep.c index 01438c1..60cf986 100644 --- a/gdb/ppc-sysv-tdep.c +++ b/gdb/ppc-sysv-tdep.c @@ -29,6 +29,7 @@ #include "gdb_assert.h" #include "ppc-tdep.h" #include "target.h" +#include "objfiles.h" /* Pass the arguments in either registers, or in the stack. Using the ppc sysv ABI, the first eight words of the argument list (that might @@ -790,27 +791,38 @@ ppc64_sysv_abi_push_dummy_call (struct gdbarch *gdbarch, CORE_ADDR func_addr, ".FN" and "FN" in the minimal symbol table. "FN" points at the FN's descriptor, while ".FN" points at the entry point (which matches FUNC_ADDR). Need to reverse from FUNC_ADDR back to the - FN's descriptor address. */ + FN's descriptor address (while at the same time being careful to + find "FN" in the same object file as ".FN"). */ { /* Find the minimal symbol that corresponds to FUNC_ADDR (should have the name ".FN"). */ struct minimal_symbol *dot_fn = lookup_minimal_symbol_by_pc (func_addr); if (dot_fn != NULL && SYMBOL_LINKAGE_NAME (dot_fn)[0] == '.') { - /* Now find the corresponding "FN" (dropping ".") minimal - symbol's address. */ - struct minimal_symbol *fn = - lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (dot_fn) + 1, NULL, - NULL); - if (fn != NULL) + /* Get the section that contains FUNC_ADR. Need this for the + "objfile" that it contains. */ + struct obj_section *dot_fn_section = find_pc_section (func_addr); + if (dot_fn_section != NULL && dot_fn_section->objfile != NULL) { - /* Got the address of that descriptor. The TOC is the - second double word. */ - CORE_ADDR toc = - read_memory_unsigned_integer (SYMBOL_VALUE_ADDRESS (fn) + - tdep->wordsize, tdep->wordsize); - regcache_cooked_write_unsigned (regcache, - tdep->ppc_gp0_regnum + 2, toc); + /* Now find the corresponding "FN" (dropping ".") minimal + symbol's address. Only look for the minimal symbol in + ".FN"'s object file - avoids problems when two object + files (i.e., shared libraries) contain a minimal symbol + with the same name. */ + struct minimal_symbol *fn = + lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (dot_fn) + 1, NULL, + dot_fn_section->objfile); + if (fn != NULL) + { + /* Got the address of that descriptor. The TOC is the + second double word. */ + CORE_ADDR toc = + read_memory_unsigned_integer (SYMBOL_VALUE_ADDRESS (fn) + + tdep->wordsize, + tdep->wordsize); + regcache_cooked_write_unsigned (regcache, + tdep->ppc_gp0_regnum + 2, toc); + } } } } |