202 lines
4.0 KiB
ArmAsm
202 lines
4.0 KiB
ArmAsm
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/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2017 Andes Technology Corporation */
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#include <linux/init.h>
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#include <linux/linkage.h>
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#include <asm/asm.h>
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#include <asm/csr.h>
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#include <asm/unistd.h>
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#include <asm/thread_info.h>
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#include <asm/asm-offsets.h>
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#include <asm-generic/export.h>
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#include <asm/ftrace.h>
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.text
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#define FENTRY_RA_OFFSET 12
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#define ABI_SIZE_ON_STACK 72
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#define ABI_A0 0
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#define ABI_A1 8
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#define ABI_A2 16
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#define ABI_A3 24
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#define ABI_A4 32
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#define ABI_A5 40
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#define ABI_A6 48
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#define ABI_A7 56
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#define ABI_RA 64
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.macro SAVE_ABI
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addi sp, sp, -SZREG
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addi sp, sp, -ABI_SIZE_ON_STACK
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REG_S a0, ABI_A0(sp)
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REG_S a1, ABI_A1(sp)
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REG_S a2, ABI_A2(sp)
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REG_S a3, ABI_A3(sp)
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REG_S a4, ABI_A4(sp)
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REG_S a5, ABI_A5(sp)
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REG_S a6, ABI_A6(sp)
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REG_S a7, ABI_A7(sp)
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REG_S ra, ABI_RA(sp)
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.endm
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.macro RESTORE_ABI
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REG_L a0, ABI_A0(sp)
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REG_L a1, ABI_A1(sp)
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REG_L a2, ABI_A2(sp)
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REG_L a3, ABI_A3(sp)
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REG_L a4, ABI_A4(sp)
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REG_L a5, ABI_A5(sp)
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REG_L a6, ABI_A6(sp)
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REG_L a7, ABI_A7(sp)
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REG_L ra, ABI_RA(sp)
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addi sp, sp, ABI_SIZE_ON_STACK
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addi sp, sp, SZREG
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.endm
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#ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
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.macro SAVE_ALL
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addi sp, sp, -SZREG
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addi sp, sp, -PT_SIZE_ON_STACK
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REG_S x1, PT_EPC(sp)
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addi sp, sp, PT_SIZE_ON_STACK
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REG_L x1, (sp)
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addi sp, sp, -PT_SIZE_ON_STACK
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REG_S x1, PT_RA(sp)
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REG_L x1, PT_EPC(sp)
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REG_S x2, PT_SP(sp)
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REG_S x3, PT_GP(sp)
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REG_S x4, PT_TP(sp)
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REG_S x5, PT_T0(sp)
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REG_S x6, PT_T1(sp)
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REG_S x7, PT_T2(sp)
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REG_S x8, PT_S0(sp)
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REG_S x9, PT_S1(sp)
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REG_S x10, PT_A0(sp)
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REG_S x11, PT_A1(sp)
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REG_S x12, PT_A2(sp)
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REG_S x13, PT_A3(sp)
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REG_S x14, PT_A4(sp)
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REG_S x15, PT_A5(sp)
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REG_S x16, PT_A6(sp)
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REG_S x17, PT_A7(sp)
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REG_S x18, PT_S2(sp)
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REG_S x19, PT_S3(sp)
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REG_S x20, PT_S4(sp)
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REG_S x21, PT_S5(sp)
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REG_S x22, PT_S6(sp)
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REG_S x23, PT_S7(sp)
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REG_S x24, PT_S8(sp)
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REG_S x25, PT_S9(sp)
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REG_S x26, PT_S10(sp)
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REG_S x27, PT_S11(sp)
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REG_S x28, PT_T3(sp)
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REG_S x29, PT_T4(sp)
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REG_S x30, PT_T5(sp)
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REG_S x31, PT_T6(sp)
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.endm
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.macro RESTORE_ALL
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REG_L x1, PT_RA(sp)
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addi sp, sp, PT_SIZE_ON_STACK
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REG_S x1, (sp)
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addi sp, sp, -PT_SIZE_ON_STACK
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REG_L x1, PT_EPC(sp)
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REG_L x2, PT_SP(sp)
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REG_L x3, PT_GP(sp)
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REG_L x4, PT_TP(sp)
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REG_L x5, PT_T0(sp)
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REG_L x6, PT_T1(sp)
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REG_L x7, PT_T2(sp)
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REG_L x8, PT_S0(sp)
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REG_L x9, PT_S1(sp)
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REG_L x10, PT_A0(sp)
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REG_L x11, PT_A1(sp)
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REG_L x12, PT_A2(sp)
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REG_L x13, PT_A3(sp)
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REG_L x14, PT_A4(sp)
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REG_L x15, PT_A5(sp)
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REG_L x16, PT_A6(sp)
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REG_L x17, PT_A7(sp)
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REG_L x18, PT_S2(sp)
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REG_L x19, PT_S3(sp)
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REG_L x20, PT_S4(sp)
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REG_L x21, PT_S5(sp)
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REG_L x22, PT_S6(sp)
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REG_L x23, PT_S7(sp)
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REG_L x24, PT_S8(sp)
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REG_L x25, PT_S9(sp)
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REG_L x26, PT_S10(sp)
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REG_L x27, PT_S11(sp)
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REG_L x28, PT_T3(sp)
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REG_L x29, PT_T4(sp)
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REG_L x30, PT_T5(sp)
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REG_L x31, PT_T6(sp)
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addi sp, sp, PT_SIZE_ON_STACK
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addi sp, sp, SZREG
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.endm
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#endif /* CONFIG_DYNAMIC_FTRACE_WITH_REGS */
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ENTRY(ftrace_caller)
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SAVE_ABI
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addi a0, ra, -FENTRY_RA_OFFSET
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la a1, function_trace_op
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REG_L a2, 0(a1)
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REG_L a1, ABI_SIZE_ON_STACK(sp)
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mv a3, sp
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ftrace_call:
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.global ftrace_call
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call ftrace_stub
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#ifdef CONFIG_FUNCTION_GRAPH_TRACER
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addi a0, sp, ABI_SIZE_ON_STACK
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REG_L a1, ABI_RA(sp)
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addi a1, a1, -FENTRY_RA_OFFSET
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#ifdef HAVE_FUNCTION_GRAPH_FP_TEST
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mv a2, s0
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#endif
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ftrace_graph_call:
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.global ftrace_graph_call
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call ftrace_stub
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#endif
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RESTORE_ABI
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ret
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ENDPROC(ftrace_caller)
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#ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
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ENTRY(ftrace_regs_caller)
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SAVE_ALL
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addi a0, ra, -FENTRY_RA_OFFSET
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la a1, function_trace_op
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REG_L a2, 0(a1)
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REG_L a1, PT_SIZE_ON_STACK(sp)
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mv a3, sp
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ftrace_regs_call:
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.global ftrace_regs_call
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call ftrace_stub
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#ifdef CONFIG_FUNCTION_GRAPH_TRACER
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addi a0, sp, PT_RA
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REG_L a1, PT_EPC(sp)
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addi a1, a1, -FENTRY_RA_OFFSET
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#ifdef HAVE_FUNCTION_GRAPH_FP_TEST
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mv a2, s0
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#endif
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ftrace_graph_regs_call:
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.global ftrace_graph_regs_call
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call ftrace_stub
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#endif
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RESTORE_ALL
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ret
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ENDPROC(ftrace_regs_caller)
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#endif /* CONFIG_DYNAMIC_FTRACE_WITH_REGS */
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