diff options
Diffstat (limited to 'arch/tile/kernel/mcount_64.S')
| -rw-r--r-- | arch/tile/kernel/mcount_64.S | 211 |
1 files changed, 0 insertions, 211 deletions
diff --git a/arch/tile/kernel/mcount_64.S b/arch/tile/kernel/mcount_64.S deleted file mode 100644 index 6c6702451962..000000000000 --- a/arch/tile/kernel/mcount_64.S +++ /dev/null @@ -1,211 +0,0 @@ -/* - * Copyright 2012 Tilera Corporation. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation, version 2. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for - * more details. - * - * TILE-Gx specific __mcount support - */ - -#include <linux/linkage.h> -#include <asm/ftrace.h> - -#define REGSIZE 8 - - .text - .global __mcount - - .macro MCOUNT_SAVE_REGS - addli sp, sp, -REGSIZE - { - st sp, lr - addli r29, sp, - (12 * REGSIZE) - } - { - addli sp, sp, - (13 * REGSIZE) - st r29, sp - } - addli r29, r29, REGSIZE - { st r29, r0; addli r29, r29, REGSIZE } - { st r29, r1; addli r29, r29, REGSIZE } - { st r29, r2; addli r29, r29, REGSIZE } - { st r29, r3; addli r29, r29, REGSIZE } - { st r29, r4; addli r29, r29, REGSIZE } - { st r29, r5; addli r29, r29, REGSIZE } - { st r29, r6; addli r29, r29, REGSIZE } - { st r29, r7; addli r29, r29, REGSIZE } - { st r29, r8; addli r29, r29, REGSIZE } - { st r29, r9; addli r29, r29, REGSIZE } - { st r29, r10; addli r29, r29, REGSIZE } - .endm - - .macro MCOUNT_RESTORE_REGS - addli r29, sp, (2 * REGSIZE) - { ld r0, r29; addli r29, r29, REGSIZE } - { ld r1, r29; addli r29, r29, REGSIZE } - { ld r2, r29; addli r29, r29, REGSIZE } - { ld r3, r29; addli r29, r29, REGSIZE } - { ld r4, r29; addli r29, r29, REGSIZE } - { ld r5, r29; addli r29, r29, REGSIZE } - { ld r6, r29; addli r29, r29, REGSIZE } - { ld r7, r29; addli r29, r29, REGSIZE } - { ld r8, r29; addli r29, r29, REGSIZE } - { ld r9, r29; addli r29, r29, REGSIZE } - { ld r10, r29; addli lr, sp, (13 * REGSIZE) } - { ld lr, lr; addli sp, sp, (14 * REGSIZE) } - .endm - - .macro RETURN_BACK - { move r12, lr; move lr, r10 } - jrp r12 - .endm - -#ifdef CONFIG_DYNAMIC_FTRACE - - .align 64 -STD_ENTRY(__mcount) -__mcount: - j ftrace_stub -STD_ENDPROC(__mcount) - - .align 64 -STD_ENTRY(ftrace_caller) - MCOUNT_SAVE_REGS - - /* arg1: self return address */ - /* arg2: parent's return address */ - /* arg3: ftrace_ops */ - /* arg4: regs (but make it NULL) */ - { move r0, lr; moveli r2, hw2_last(function_trace_op) } - { move r1, r10; shl16insli r2, r2, hw1(function_trace_op) } - { movei r3, 0; shl16insli r2, r2, hw0(function_trace_op) } - ld r2,r2 - - .global ftrace_call -ftrace_call: - /* - * a placeholder for the call to a real tracing function, i.e. - * ftrace_trace_function() - */ - nop - -#ifdef CONFIG_FUNCTION_GRAPH_TRACER - .global ftrace_graph_call -ftrace_graph_call: - /* - * a placeholder for the call to a real tracing function, i.e. - * ftrace_graph_caller() - */ - nop -#endif - MCOUNT_RESTORE_REGS - .global ftrace_stub -ftrace_stub: - RETURN_BACK -STD_ENDPROC(ftrace_caller) - -#else /* ! CONFIG_DYNAMIC_FTRACE */ - - .align 64 -STD_ENTRY(__mcount) - { - moveli r11, hw2_last(ftrace_trace_function) - moveli r13, hw2_last(ftrace_stub) - } - { - shl16insli r11, r11, hw1(ftrace_trace_function) - shl16insli r13, r13, hw1(ftrace_stub) - } - { - shl16insli r11, r11, hw0(ftrace_trace_function) - shl16insli r13, r13, hw0(ftrace_stub) - } - - ld r11, r11 - sub r14, r13, r11 - bnez r14, static_trace - -#ifdef CONFIG_FUNCTION_GRAPH_TRACER - moveli r15, hw2_last(ftrace_graph_return) - shl16insli r15, r15, hw1(ftrace_graph_return) - shl16insli r15, r15, hw0(ftrace_graph_return) - ld r15, r15 - sub r15, r15, r13 - bnez r15, ftrace_graph_caller - - { - moveli r16, hw2_last(ftrace_graph_entry) - moveli r17, hw2_last(ftrace_graph_entry_stub) - } - { - shl16insli r16, r16, hw1(ftrace_graph_entry) - shl16insli r17, r17, hw1(ftrace_graph_entry_stub) - } - { - shl16insli r16, r16, hw0(ftrace_graph_entry) - shl16insli r17, r17, hw0(ftrace_graph_entry_stub) - } - ld r16, r16 - sub r17, r16, r17 - bnez r17, ftrace_graph_caller - -#endif - RETURN_BACK - -static_trace: - MCOUNT_SAVE_REGS - - /* arg1: self return address */ - /* arg2: parent's return address */ - { move r0, lr; move r1, r10 } - - /* call ftrace_trace_function() */ - jalr r11 - - MCOUNT_RESTORE_REGS - - .global ftrace_stub -ftrace_stub: - RETURN_BACK -STD_ENDPROC(__mcount) - -#endif /* ! CONFIG_DYNAMIC_FTRACE */ - -#ifdef CONFIG_FUNCTION_GRAPH_TRACER - -STD_ENTRY(ftrace_graph_caller) -ftrace_graph_caller: -#ifndef CONFIG_DYNAMIC_FTRACE - MCOUNT_SAVE_REGS -#endif - - /* arg1: Get the location of the parent's return address */ - addi r0, sp, 12 * REGSIZE - /* arg2: Get self return address */ - move r1, lr - - jal prepare_ftrace_return - - MCOUNT_RESTORE_REGS - RETURN_BACK -STD_ENDPROC(ftrace_graph_caller) - - .global return_to_handler -return_to_handler: - MCOUNT_SAVE_REGS - - jal ftrace_return_to_handler - /* restore the real parent address */ - move r11, r0 - - MCOUNT_RESTORE_REGS - jr r11 - -#endif /* CONFIG_FUNCTION_GRAPH_TRACER */ |