[3.13] gh-120400 ：Support Linux perf profile to see Python calls on RISC-V architecture (GH-120089) (#120413)

gh-120400 ：Support Linux perf profile to see Python calls on RISC-V architecture (GH-120089)
(cherry picked from commit 4b1e85b)

Co-authored-by: ixgbe00 <[email protected]>
Co-authored-by: Pablo Galindo Salgado <[email protected]>

Author: 3 people

Misc/NEWS.d/next/Core and Builtins/2024-06-05-06-26-04.gh-issue-

@@ -0,0 +1 @@
+Support Linux perf profiler to see Python calls on RISC-V architecture

Misc/NEWS.d/next/Core and Builtins/2024-06-12-12-29-45.gh-issue-120400.lZYHVS.rst

@@ -0,0 +1 @@
+Support Linux perf profiler to see Python calls on RISC-V architecture.

Python/asm_trampoline.S

@@ -22,6 +22,14 @@ _Py_trampoline_func_start:
     blr     x3
     ldp     x29, x30, [sp], 16
     ret
+#endif
+#ifdef __riscv
+    addi    sp,sp,-16
+    sd      ra,8(sp)
+    jalr    a3
+    ld      ra,8(sp)
+    addi    sp,sp,16
+    jr      ra
 #endif
     .globl	_Py_trampoline_func_end
 _Py_trampoline_func_end:

configure

@@ -3641,6 +3641,7 @@ AC_MSG_CHECKING([perf trampoline])
 AS_CASE([$PLATFORM_TRIPLET],
   [x86_64-linux-gnu], [perf_trampoline=yes],
   [aarch64-linux-gnu], [perf_trampoline=yes],
+  [riscv64-linux-gnu], [perf_trampoline=yes],
   [perf_trampoline=no]
 )
 AC_MSG_RESULT([$perf_trampoline])