#include <asm/code-patching.h>
#include <asm/ftrace.h>
-#ifdef CONFIG_PPC32
-# define GET_ADDR(addr) addr
-#else
-/* PowerPC64's functions are data that points to the functions */
-# define GET_ADDR(addr) (*(unsigned long *)addr)
-#endif
#ifdef CONFIG_DYNAMIC_FTRACE
-static unsigned int ftrace_nop_replace(void)
-{
- return PPC_INST_NOP;
-}
-
static unsigned int
ftrace_call_replace(unsigned long ip, unsigned long addr, int link)
{
unsigned int op;
- addr = GET_ADDR(addr);
+ addr = ppc_function_entry((void *)addr);
/* if (link) set op to 'bl' else 'b' */
op = create_branch((unsigned int *)ip, addr, link ? 1 : 0);
return op;
}
-#ifdef CONFIG_PPC64
-# define _ASM_ALIGN " .align 3 "
-# define _ASM_PTR " .llong "
-#else
-# define _ASM_ALIGN " .align 2 "
-# define _ASM_PTR " .long "
-#endif
-
static int
ftrace_modify_code(unsigned long ip, unsigned int old, unsigned int new)
{
ptr = ((unsigned long)jmp[0] << 32) + jmp[1];
/* This should match what was called */
- if (ptr != GET_ADDR(addr)) {
+ if (ptr != ppc_function_entry((void *)addr)) {
printk(KERN_ERR "addr does not match %lx\n", ptr);
return -EINVAL;
}
if (test_24bit_addr(ip, addr)) {
/* within range */
old = ftrace_call_replace(ip, addr, 1);
- new = ftrace_nop_replace();
+ new = PPC_INST_NOP;
return ftrace_modify_code(ip, old, new);
}
*/
if (test_24bit_addr(ip, addr)) {
/* within range */
- old = ftrace_nop_replace();
+ old = PPC_INST_NOP;
new = ftrace_call_replace(ip, addr, 1);
return ftrace_modify_code(ip, old, new);
}
return_hooker = (unsigned long)&mod_return_to_handler;
#endif
- return_hooker = GET_ADDR(return_hooker);
+ return_hooker = ppc_function_entry((void *)return_hooker);
/*
* Protect against fault, even if it shouldn't