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* Use function pointers for symbol lookup (currently for elf32 and elf64,

Browse source 
could be expanded).  This also fixes the bug with mips elf64 symbols
  in current Qemu trunk.

* Use quicksort and binary search for symbol lookup.

* Remove unneeded entries from symbol table.  This reduced a typical table
  size (linux mips kernel) from 1764487 to 11656 entries.

Signed-off-by: Stefan Weil <weil@mail.berlios.de> 



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5510 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2008-10-22 15:11:31 +00:00
parent f16a0db323
commit 49918a752b
4 changed files with 184 additions and 95 deletions
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30
disas.c
View file

@ -303,33 +303,17 @@ void disas(FILE *out, void *code, unsigned long size)
/* Look up symbol for debugging purpose. Returns "" if unknown. */
const char *lookup_symbol(target_ulong orig_addr)
{
unsigned int i;
/* Hack, because we know this is x86. */
Elf32_Sym *sym;
const char *symbol = "";
struct syminfo *s;
target_ulong addr;
for (s = syminfos; s; s = s->next) {
sym = s->disas_symtab;
for (i = 0; i < s->disas_num_syms; i++) {
if (sym[i].st_shndx == SHN_UNDEF
|| sym[i].st_shndx >= SHN_LORESERVE)
continue;
if (ELF_ST_TYPE(sym[i].st_info) != STT_FUNC)
continue;
addr = sym[i].st_value;
#if defined(TARGET_ARM) || defined (TARGET_MIPS)
/* The bottom address bit marks a Thumb or MIPS16 symbol. */
addr &= ~(target_ulong)1;
#endif
if (orig_addr >= addr
&& orig_addr < addr + sym[i].st_size)
return s->disas_strtab + sym[i].st_name;
}
symbol = s->lookup_symbol(s, orig_addr);
if (symbol[0] != '\0') {
break;
}
}
return "";
return symbol;
}
#if !defined(CONFIG_USER_ONLY)