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elf: Calculate symbol size if needed 

Symbols with a size of 0 are unusable for the disassembler.

Example:

While running an arm linux kernel, no symbolic names are
used in qemu.log when the cpu is executing an assembler function.

Assume that the size of such symbols is the difference to the
next symbol value.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Stefan Weil 2010-08-09 16:43:53 +02:00 committed by Blue Swirl
parent d7d9b528b1
commit e403e433c1
1 changed files with 5 additions and 0 deletions
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5
hw/elf_ops.h
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@ -153,6 +153,11 @@ static int glue(load_symbols, SZ)(struct elfhdr *ehdr, int fd, int must_swab,
syms = qemu_realloc(syms, nsyms * sizeof(*syms));
qsort(syms, nsyms, sizeof(*syms), glue(symcmp, SZ));
for (i = 0; i < nsyms - 1; i++) {
if (syms[i].st_size == 0) {
syms[i].st_size = syms[i + 1].st_value - syms[i].st_value;
}
}
} else {
qemu_free(syms);
syms = NULL;