192 lines
3.7 KiB
ArmAsm
192 lines
3.7 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/* Copyright (C) 2017 Andes Technology Corporation */
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/linkage.h>
|
|
#include <asm/asm.h>
|
|
#include <asm/csr.h>
|
|
#include <asm/unistd.h>
|
|
#include <asm/thread_info.h>
|
|
#include <asm/asm-offsets.h>
|
|
#include <asm-generic/export.h>
|
|
#include <asm/ftrace.h>
|
|
|
|
.text
|
|
|
|
#define FENTRY_RA_OFFSET 8
|
|
#define ABI_SIZE_ON_STACK 80
|
|
#define ABI_A0 0
|
|
#define ABI_A1 8
|
|
#define ABI_A2 16
|
|
#define ABI_A3 24
|
|
#define ABI_A4 32
|
|
#define ABI_A5 40
|
|
#define ABI_A6 48
|
|
#define ABI_A7 56
|
|
#define ABI_T0 64
|
|
#define ABI_RA 72
|
|
|
|
.macro SAVE_ABI
|
|
addi sp, sp, -ABI_SIZE_ON_STACK
|
|
|
|
REG_S a0, ABI_A0(sp)
|
|
REG_S a1, ABI_A1(sp)
|
|
REG_S a2, ABI_A2(sp)
|
|
REG_S a3, ABI_A3(sp)
|
|
REG_S a4, ABI_A4(sp)
|
|
REG_S a5, ABI_A5(sp)
|
|
REG_S a6, ABI_A6(sp)
|
|
REG_S a7, ABI_A7(sp)
|
|
REG_S t0, ABI_T0(sp)
|
|
REG_S ra, ABI_RA(sp)
|
|
.endm
|
|
|
|
.macro RESTORE_ABI
|
|
REG_L a0, ABI_A0(sp)
|
|
REG_L a1, ABI_A1(sp)
|
|
REG_L a2, ABI_A2(sp)
|
|
REG_L a3, ABI_A3(sp)
|
|
REG_L a4, ABI_A4(sp)
|
|
REG_L a5, ABI_A5(sp)
|
|
REG_L a6, ABI_A6(sp)
|
|
REG_L a7, ABI_A7(sp)
|
|
REG_L t0, ABI_T0(sp)
|
|
REG_L ra, ABI_RA(sp)
|
|
|
|
addi sp, sp, ABI_SIZE_ON_STACK
|
|
.endm
|
|
|
|
#ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
|
|
.macro SAVE_ALL
|
|
addi sp, sp, -PT_SIZE_ON_STACK
|
|
|
|
REG_S t0, PT_EPC(sp)
|
|
REG_S x1, PT_RA(sp)
|
|
REG_S x2, PT_SP(sp)
|
|
REG_S x3, PT_GP(sp)
|
|
REG_S x4, PT_TP(sp)
|
|
REG_S x5, PT_T0(sp)
|
|
REG_S x6, PT_T1(sp)
|
|
REG_S x7, PT_T2(sp)
|
|
REG_S x8, PT_S0(sp)
|
|
REG_S x9, PT_S1(sp)
|
|
REG_S x10, PT_A0(sp)
|
|
REG_S x11, PT_A1(sp)
|
|
REG_S x12, PT_A2(sp)
|
|
REG_S x13, PT_A3(sp)
|
|
REG_S x14, PT_A4(sp)
|
|
REG_S x15, PT_A5(sp)
|
|
REG_S x16, PT_A6(sp)
|
|
REG_S x17, PT_A7(sp)
|
|
REG_S x18, PT_S2(sp)
|
|
REG_S x19, PT_S3(sp)
|
|
REG_S x20, PT_S4(sp)
|
|
REG_S x21, PT_S5(sp)
|
|
REG_S x22, PT_S6(sp)
|
|
REG_S x23, PT_S7(sp)
|
|
REG_S x24, PT_S8(sp)
|
|
REG_S x25, PT_S9(sp)
|
|
REG_S x26, PT_S10(sp)
|
|
REG_S x27, PT_S11(sp)
|
|
REG_S x28, PT_T3(sp)
|
|
REG_S x29, PT_T4(sp)
|
|
REG_S x30, PT_T5(sp)
|
|
REG_S x31, PT_T6(sp)
|
|
.endm
|
|
|
|
.macro RESTORE_ALL
|
|
REG_L t0, PT_EPC(sp)
|
|
REG_L x1, PT_RA(sp)
|
|
REG_L x2, PT_SP(sp)
|
|
REG_L x3, PT_GP(sp)
|
|
REG_L x4, PT_TP(sp)
|
|
REG_L x6, PT_T1(sp)
|
|
REG_L x7, PT_T2(sp)
|
|
REG_L x8, PT_S0(sp)
|
|
REG_L x9, PT_S1(sp)
|
|
REG_L x10, PT_A0(sp)
|
|
REG_L x11, PT_A1(sp)
|
|
REG_L x12, PT_A2(sp)
|
|
REG_L x13, PT_A3(sp)
|
|
REG_L x14, PT_A4(sp)
|
|
REG_L x15, PT_A5(sp)
|
|
REG_L x16, PT_A6(sp)
|
|
REG_L x17, PT_A7(sp)
|
|
REG_L x18, PT_S2(sp)
|
|
REG_L x19, PT_S3(sp)
|
|
REG_L x20, PT_S4(sp)
|
|
REG_L x21, PT_S5(sp)
|
|
REG_L x22, PT_S6(sp)
|
|
REG_L x23, PT_S7(sp)
|
|
REG_L x24, PT_S8(sp)
|
|
REG_L x25, PT_S9(sp)
|
|
REG_L x26, PT_S10(sp)
|
|
REG_L x27, PT_S11(sp)
|
|
REG_L x28, PT_T3(sp)
|
|
REG_L x29, PT_T4(sp)
|
|
REG_L x30, PT_T5(sp)
|
|
REG_L x31, PT_T6(sp)
|
|
|
|
addi sp, sp, PT_SIZE_ON_STACK
|
|
.endm
|
|
#endif /* CONFIG_DYNAMIC_FTRACE_WITH_REGS */
|
|
|
|
ENTRY(ftrace_caller)
|
|
SAVE_ABI
|
|
|
|
addi a0, t0, -FENTRY_RA_OFFSET
|
|
la a1, function_trace_op
|
|
REG_L a2, 0(a1)
|
|
mv a1, ra
|
|
mv a3, sp
|
|
|
|
ftrace_call:
|
|
.global ftrace_call
|
|
call ftrace_stub
|
|
|
|
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
|
|
addi a0, sp, ABI_RA
|
|
REG_L a1, ABI_T0(sp)
|
|
addi a1, a1, -FENTRY_RA_OFFSET
|
|
#ifdef HAVE_FUNCTION_GRAPH_FP_TEST
|
|
mv a2, s0
|
|
#endif
|
|
ftrace_graph_call:
|
|
.global ftrace_graph_call
|
|
call ftrace_stub
|
|
#endif
|
|
RESTORE_ABI
|
|
jr t0
|
|
ENDPROC(ftrace_caller)
|
|
|
|
#ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
|
|
ENTRY(ftrace_regs_caller)
|
|
SAVE_ALL
|
|
|
|
addi a0, t0, -FENTRY_RA_OFFSET
|
|
la a1, function_trace_op
|
|
REG_L a2, 0(a1)
|
|
mv a1, ra
|
|
mv a3, sp
|
|
|
|
ftrace_regs_call:
|
|
.global ftrace_regs_call
|
|
call ftrace_stub
|
|
|
|
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
|
|
addi a0, sp, PT_RA
|
|
REG_L a1, PT_EPC(sp)
|
|
addi a1, a1, -FENTRY_RA_OFFSET
|
|
#ifdef HAVE_FUNCTION_GRAPH_FP_TEST
|
|
mv a2, s0
|
|
#endif
|
|
ftrace_graph_regs_call:
|
|
.global ftrace_graph_regs_call
|
|
call ftrace_stub
|
|
#endif
|
|
|
|
RESTORE_ALL
|
|
jr t0
|
|
ENDPROC(ftrace_regs_caller)
|
|
#endif /* CONFIG_DYNAMIC_FTRACE_WITH_REGS */
|