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| author | Song Shuai <suagrfillet@gmail.com> | 2023-11-30 13:15:31 +0100 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-01-17 18:17:10 -0800 |
| commit | 629291dd8499e4dc7dff6e9ab8c13b1a841059e8 (patch) | |
| tree | 03d344fb275fdefc84f748f1f1ba0b542095fc40 /samples/ftrace/ftrace-direct-too.c | |
| parent | 196c79f19a92764d45005599f35338cf0a9eafbb (diff) | |
| download | linux-629291dd8499e4dc7dff6e9ab8c13b1a841059e8.tar.gz linux-629291dd8499e4dc7dff6e9ab8c13b1a841059e8.tar.bz2 linux-629291dd8499e4dc7dff6e9ab8c13b1a841059e8.zip | |
samples: ftrace: Add RISC-V support for SAMPLE_FTRACE_DIRECT[_MULTI]
Add RISC-V variants of the ftrace-direct* samples.
Tested-by: Evgenii Shatokhin <e.shatokhin@yadro.com>
Signed-off-by: Song Shuai <suagrfillet@gmail.com>
Tested-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Guo Ren <guoren@kernel.org>
Acked-by: Björn Töpel <bjorn@rivosinc.com>
Link: https://lore.kernel.org/r/20231130121531.1178502-5-bjorn@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'samples/ftrace/ftrace-direct-too.c')
| -rw-r--r-- | samples/ftrace/ftrace-direct-too.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/samples/ftrace/ftrace-direct-too.c b/samples/ftrace/ftrace-direct-too.c index e39c3563ae4e..6ff546a5d7eb 100644 --- a/samples/ftrace/ftrace-direct-too.c +++ b/samples/ftrace/ftrace-direct-too.c @@ -19,6 +19,34 @@ void my_direct_func(struct vm_area_struct *vma, unsigned long address, extern void my_tramp(void *); +#ifdef CONFIG_RISCV +#include <asm/asm.h> + +asm ( +" .pushsection .text, \"ax\", @progbits\n" +" .type my_tramp, @function\n" +" .globl my_tramp\n" +" my_tramp:\n" +" addi sp,sp,-5*"SZREG"\n" +" "REG_S" a0,0*"SZREG"(sp)\n" +" "REG_S" a1,1*"SZREG"(sp)\n" +" "REG_S" a2,2*"SZREG"(sp)\n" +" "REG_S" t0,3*"SZREG"(sp)\n" +" "REG_S" ra,4*"SZREG"(sp)\n" +" call my_direct_func\n" +" "REG_L" a0,0*"SZREG"(sp)\n" +" "REG_L" a1,1*"SZREG"(sp)\n" +" "REG_L" a2,2*"SZREG"(sp)\n" +" "REG_L" t0,3*"SZREG"(sp)\n" +" "REG_L" ra,4*"SZREG"(sp)\n" +" addi sp,sp,5*"SZREG"\n" +" jr t0\n" +" .size my_tramp, .-my_tramp\n" +" .popsection\n" +); + +#endif /* CONFIG_RISCV */ + #ifdef CONFIG_X86_64 #include <asm/ibt.h> |