diff options
Diffstat (limited to 'arch/s390/kernel/mcount64.S')
-rw-r--r-- | arch/s390/kernel/mcount64.S | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/arch/s390/kernel/mcount64.S b/arch/s390/kernel/mcount64.S deleted file mode 100644 index 07abe8d464d4..000000000000 --- a/arch/s390/kernel/mcount64.S +++ /dev/null @@ -1,80 +0,0 @@ -/* - * Copyright IBM Corp. 2008, 2009 - * - * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>, - * - */ - -#include <linux/linkage.h> -#include <asm/asm-offsets.h> -#include <asm/ftrace.h> -#include <asm/ptrace.h> - - .section .kprobes.text, "ax" - -ENTRY(ftrace_stub) - br %r14 - -#define STACK_FRAME_SIZE (STACK_FRAME_OVERHEAD + __PT_SIZE) -#define STACK_PTREGS (STACK_FRAME_OVERHEAD) -#define STACK_PTREGS_GPRS (STACK_PTREGS + __PT_GPRS) -#define STACK_PTREGS_PSW (STACK_PTREGS + __PT_PSW) - -ENTRY(_mcount) - br %r14 - -ENTRY(ftrace_caller) - .globl ftrace_regs_caller - .set ftrace_regs_caller,ftrace_caller - lgr %r1,%r15 - aghi %r15,-STACK_FRAME_SIZE - stg %r1,__SF_BACKCHAIN(%r15) - stg %r1,(STACK_PTREGS_GPRS+15*8)(%r15) - stg %r0,(STACK_PTREGS_PSW+8)(%r15) - stmg %r2,%r14,(STACK_PTREGS_GPRS+2*8)(%r15) -#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES - aghik %r2,%r0,-MCOUNT_INSN_SIZE - lgrl %r4,function_trace_op - lgrl %r1,ftrace_trace_function -#else - lgr %r2,%r0 - aghi %r2,-MCOUNT_INSN_SIZE - larl %r4,function_trace_op - lg %r4,0(%r4) - larl %r1,ftrace_trace_function - lg %r1,0(%r1) -#endif - lgr %r3,%r14 - la %r5,STACK_PTREGS(%r15) - basr %r14,%r1 -#ifdef CONFIG_FUNCTION_GRAPH_TRACER -# The j instruction gets runtime patched to a nop instruction. -# See ftrace_enable_ftrace_graph_caller. The patched instruction is: -# j .+4 -ENTRY(ftrace_graph_caller) - j ftrace_graph_caller_end - lg %r2,(STACK_PTREGS_GPRS+14*8)(%r15) - lg %r3,(STACK_PTREGS_PSW+8)(%r15) - brasl %r14,prepare_ftrace_return - stg %r2,(STACK_PTREGS_GPRS+14*8)(%r15) -ftrace_graph_caller_end: - .globl ftrace_graph_caller_end -#endif - lg %r1,(STACK_PTREGS_PSW+8)(%r15) - lmg %r2,%r15,(STACK_PTREGS_GPRS+2*8)(%r15) - br %r1 - -#ifdef CONFIG_FUNCTION_GRAPH_TRACER - -ENTRY(return_to_handler) - stmg %r2,%r5,32(%r15) - lgr %r1,%r15 - aghi %r15,-STACK_FRAME_OVERHEAD - stg %r1,__SF_BACKCHAIN(%r15) - brasl %r14,ftrace_return_to_handler - aghi %r15,STACK_FRAME_OVERHEAD - lgr %r14,%r2 - lmg %r2,%r5,32(%r15) - br %r14 - -#endif |