support riscv

(cherry picked from commit de835ce23f88b1c520920f2486da61c1958c2174)

libunwind.spec

@@ -1,7 +1,7 @@
 Name: libunwind
 Epoch: 2
 Version: 1.7.2
-Release: 2
+Release: 3
 Summary: Libunwind provides a C ABI to determine the call-chain of a program
 License: BSD
 URL: http://savannah.nongnu.org/projects/libunwind
@@ -11,6 +11,7 @@ Patch1: 0001-fix-byte_order_is_valid-function-logic.patch
 Patch2: backport-aarch64-unw_step-validates-address-before-calling-dwarf_get.patch
 Patch3: backport-avoid-calling-printf-because-OE-glibc-2.34-used-mno-.patch
 Patch4: backport-fix-run-ptrace-mapper-test-case-failed.patch
+Patch9000: riscv.patch
 
 ExclusiveArch: aarch64 %{ix86} x86_64 riscv64 ppc64le loongarch64
 
@@ -88,6 +89,9 @@ make check || true
 %{_mandir}/*/*
 
 %changelog
+* Thu Apr 11 2024 shafeipaozi <sunbo.oerv@isrc.iscas.ac.cn> - 2:1.7.2-3
+- add support riscv64
+
 * Mon Feb 26 2024 doupengda <doupengda@loongson.cn> - 2:1.7.2-2
 - Type:bugfix
 - ID:NA

riscv.patch

@@ -0,0 +1,13 @@
+Index: libunwind-1.8.1/src/riscv/Gis_signal_frame.c
+===================================================================
+--- libunwind-1.8.1.orig/src/riscv/Gis_signal_frame.c
++++ libunwind-1.8.1/src/riscv/Gis_signal_frame.c
+@@ -57,7 +57,7 @@ unw_is_signal_frame (unw_cursor_t *curso
+ 
+   ip = c->dwarf.ip;
+ 
+-  if (!ip || !a->access_mem || (ip & (sizeof(unw_word_t) - 1)))
++  if (!ip || !a->access_mem)
+     return 0;
+ 
+   if ((ret = (*a->access_mem) (as, ip, &i0, 0, arg)) < 0)