mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-25 02:09:42 +00:00
powerpc: Prepare func_desc_t for refactorisation
In preparation of making func_desc_t generic, change the ELFv2 version to a struct containing 'addr' element. This allows using single helpers common to ELFv1 and ELFv2 and reduces the amount of #ifdef's Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/5c36105e08b27b98450535bff48d71b690c19739.1644928018.git.christophe.leroy@csgroup.eu
This commit is contained in:
parent
0a9c5ae279
commit
2fd986377d
1 changed files with 18 additions and 18 deletions
|
@ -33,19 +33,17 @@
|
|||
#ifdef PPC64_ELF_ABI_v2
|
||||
|
||||
/* An address is simply the address of the function. */
|
||||
typedef unsigned long func_desc_t;
|
||||
typedef struct {
|
||||
unsigned long addr;
|
||||
} func_desc_t;
|
||||
|
||||
static func_desc_t func_desc(unsigned long addr)
|
||||
{
|
||||
return addr;
|
||||
}
|
||||
static unsigned long func_addr(unsigned long addr)
|
||||
{
|
||||
return addr;
|
||||
}
|
||||
static unsigned long stub_func_addr(func_desc_t func)
|
||||
{
|
||||
return func;
|
||||
func_desc_t desc = {
|
||||
.addr = addr,
|
||||
};
|
||||
|
||||
return desc;
|
||||
}
|
||||
|
||||
/* PowerPC64 specific values for the Elf64_Sym st_other field. */
|
||||
|
@ -70,14 +68,6 @@ static func_desc_t func_desc(unsigned long addr)
|
|||
{
|
||||
return *(struct func_desc *)addr;
|
||||
}
|
||||
static unsigned long func_addr(unsigned long addr)
|
||||
{
|
||||
return func_desc(addr).addr;
|
||||
}
|
||||
static unsigned long stub_func_addr(func_desc_t func)
|
||||
{
|
||||
return func.addr;
|
||||
}
|
||||
static unsigned int local_entry_offset(const Elf64_Sym *sym)
|
||||
{
|
||||
return 0;
|
||||
|
@ -93,6 +83,16 @@ void *dereference_module_function_descriptor(struct module *mod, void *ptr)
|
|||
}
|
||||
#endif
|
||||
|
||||
static unsigned long func_addr(unsigned long addr)
|
||||
{
|
||||
return func_desc(addr).addr;
|
||||
}
|
||||
|
||||
static unsigned long stub_func_addr(func_desc_t func)
|
||||
{
|
||||
return func.addr;
|
||||
}
|
||||
|
||||
#define STUB_MAGIC 0x73747562 /* stub */
|
||||
|
||||
/* Like PPC32, we need little trampolines to do > 24-bit jumps (into
|
||||
|
|
Loading…
Reference in a new issue