1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) 2017 Andes Technology Corporation */
4 #include <linux/init.h>
5 #include <linux/linkage.h>
8 #include <asm/unistd.h>
9 #include <asm/thread_info.h>
10 #include <asm/asm-offsets.h>
11 #include <asm-generic/export.h>
12 #include <asm/ftrace.h>
16 #define FENTRY_RA_OFFSET 8
17 #define ABI_SIZE_ON_STACK 80
30 addi sp, sp, -ABI_SIZE_ON_STACK
56 addi sp, sp, ABI_SIZE_ON_STACK
59 #ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
61 addi sp, sp, -PT_SIZE_ON_STACK
77 /* Restore t0 with PT_EPC */
79 restore_from_x6_to_x31
81 addi sp, sp, PT_SIZE_ON_STACK
83 #endif /* CONFIG_DYNAMIC_FTRACE_WITH_REGS */
88 addi a0, t0, -FENTRY_RA_OFFSET
89 la a1, function_trace_op
98 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
101 addi a1, a1, -FENTRY_RA_OFFSET
102 #ifdef HAVE_FUNCTION_GRAPH_FP_TEST
106 .global ftrace_graph_call
111 ENDPROC(ftrace_caller)
113 #ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
114 ENTRY(ftrace_regs_caller)
117 addi a0, t0, -FENTRY_RA_OFFSET
118 la a1, function_trace_op
124 .global ftrace_regs_call
127 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
130 addi a1, a1, -FENTRY_RA_OFFSET
131 #ifdef HAVE_FUNCTION_GRAPH_FP_TEST
134 ftrace_graph_regs_call:
135 .global ftrace_graph_regs_call
141 ENDPROC(ftrace_regs_caller)
142 #endif /* CONFIG_DYNAMIC_FTRACE_WITH_REGS */