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tools: relocate-rela: introduce elf16_to_cpu() and elf32_to_cpu()

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Add elf16_to_cpu() and elf32_to_cpu() functions that allow to read data in
both big-endian and little-endian formats.

Reviewed-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Ovidiu Panait <ovpanait@gmail.com>
Link: https://lore.kernel.org/r/20230311173838.521804-2-ovpanait@gmail.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
This commit is contained in:
Ovidiu Panait 2023-03-11 19:38:35 +02:00 committed by Michal Simek
parent 26c8c1bd12
commit 424f04fcd9
1 changed files with 20 additions and 0 deletions
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20
tools/relocate-rela.c
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@ -45,6 +45,7 @@
#endif
static int ei_class;
static int ei_data;
static uint64_t rela_start, rela_end, text_base, dyn_start;
@ -61,6 +62,22 @@ static void debug(const char *fmt, ...)
}
}
static uint16_t elf16_to_cpu(uint16_t data)
{
if (ei_data == ELFDATA2LSB)
return le16_to_cpu(data);
return be16_to_cpu(data);
}
static uint32_t elf32_to_cpu(uint32_t data)
{
if (ei_data == ELFDATA2LSB)
return le32_to_cpu(data);
return be32_to_cpu(data);
}
static bool supported_rela(Elf64_Rela *rela)
{
uint64_t mask = 0xffffffffULL; /* would be different on 32-bit */
@ -384,6 +401,9 @@ static int decode_elf(char **argv)
ei_class = e_ident[4];
debug("EI_CLASS(1=32bit, 2=64bit) %d\n", ei_class);
ei_data = e_ident[5];
debug("EI_DATA(1=little endian, 2=big endian) %d\n", ei_data);
if (ei_class == 2)
return decode_elf64(felf, argv);