diff options
Diffstat (limited to 'arch/loongarch/kernel/mcount_dyn.S')
| -rw-r--r-- | arch/loongarch/kernel/mcount_dyn.S | 35 |
1 files changed, 26 insertions, 9 deletions
diff --git a/arch/loongarch/kernel/mcount_dyn.S b/arch/loongarch/kernel/mcount_dyn.S index bbabf06244c2..d6b474ad1d5e 100644 --- a/arch/loongarch/kernel/mcount_dyn.S +++ b/arch/loongarch/kernel/mcount_dyn.S @@ -3,7 +3,6 @@ * Copyright (C) 2022 Loongson Technology Corporation Limited */ -#include <asm/export.h> #include <asm/ftrace.h> #include <asm/regdef.h> #include <asm/stackframe.h> @@ -42,7 +41,6 @@ .if \allregs PTR_S tp, sp, PT_R2 PTR_S t0, sp, PT_R12 - PTR_S t1, sp, PT_R13 PTR_S t2, sp, PT_R14 PTR_S t3, sp, PT_R15 PTR_S t4, sp, PT_R16 @@ -64,6 +62,8 @@ PTR_S zero, sp, PT_R0 .endif PTR_S ra, sp, PT_ERA /* Save trace function ra at PT_ERA */ + move t1, zero + PTR_S t1, sp, PT_R13 PTR_ADDI t8, sp, PT_SIZE PTR_S t8, sp, PT_R3 .endm @@ -73,6 +73,7 @@ SYM_FUNC_START(ftrace_stub) SYM_FUNC_END(ftrace_stub) SYM_CODE_START(ftrace_common) + UNWIND_HINT_UNDEFINED PTR_ADDI a0, ra, -8 /* arg0: ip */ move a1, t0 /* arg1: parent_ip */ la.pcrel t1, function_trace_op @@ -104,17 +105,23 @@ ftrace_common_return: PTR_L a7, sp, PT_R11 PTR_L fp, sp, PT_R22 PTR_L t0, sp, PT_ERA + PTR_L t1, sp, PT_R13 PTR_ADDI sp, sp, PT_SIZE + bnez t1, .Ldirect jr t0 +.Ldirect: + jr t1 SYM_CODE_END(ftrace_common) SYM_CODE_START(ftrace_caller) + UNWIND_HINT_UNDEFINED ftrace_regs_entry allregs=0 b ftrace_common SYM_CODE_END(ftrace_caller) #ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS SYM_CODE_START(ftrace_regs_caller) + UNWIND_HINT_UNDEFINED ftrace_regs_entry allregs=1 b ftrace_common SYM_CODE_END(ftrace_regs_caller) @@ -122,6 +129,7 @@ SYM_CODE_END(ftrace_regs_caller) #ifdef CONFIG_FUNCTION_GRAPH_TRACER SYM_CODE_START(ftrace_graph_caller) + UNWIND_HINT_UNDEFINED PTR_L a0, sp, PT_ERA PTR_ADDI a0, a0, -8 /* arg0: self_addr */ PTR_ADDI a1, sp, PT_R1 /* arg1: parent */ @@ -130,20 +138,29 @@ SYM_CODE_START(ftrace_graph_caller) SYM_CODE_END(ftrace_graph_caller) SYM_CODE_START(return_to_handler) + UNWIND_HINT_UNDEFINED /* Save return value regs */ - PTR_ADDI sp, sp, -2 * SZREG - PTR_S a0, sp, 0 - PTR_S a1, sp, SZREG + PTR_ADDI sp, sp, -PT_SIZE + PTR_S a0, sp, PT_R4 + PTR_S a1, sp, PT_R5 + PTR_S zero, sp, PT_R22 - move a0, zero + move a0, sp bl ftrace_return_to_handler move ra, a0 /* Restore return value regs */ - PTR_L a0, sp, 0 - PTR_L a1, sp, SZREG - PTR_ADDI sp, sp, 2 * SZREG + PTR_L a0, sp, PT_R4 + PTR_L a1, sp, PT_R5 + PTR_ADDI sp, sp, PT_SIZE jr ra SYM_CODE_END(return_to_handler) #endif + +#ifdef CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS +SYM_CODE_START(ftrace_stub_direct_tramp) + UNWIND_HINT_UNDEFINED + jr t0 +SYM_CODE_END(ftrace_stub_direct_tramp) +#endif /* CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS */ |