diff --git a/src/coreclr/debug/crashreport/inproccrashreporter.cpp b/src/coreclr/debug/crashreport/inproccrashreporter.cpp
index 64f3a451197ffb..8f90f92c0edd6e 100644
--- a/src/coreclr/debug/crashreport/inproccrashreporter.cpp
+++ b/src/coreclr/debug/crashreport/inproccrashreporter.cpp
@@ -58,6 +58,10 @@ static const char CRASHREPORT_ARCHITECTURE_NAME[] =
     "riscv64";
 #elif defined(TARGET_LOONGARCH64)
     "loongarch64";
+#elif defined(TARGET_S390X)
+    "s390x";
+#elif defined(TARGET_POWERPC64)
+    "ppc64le";
 #else
 #error "Unsupported arch"
 #endif
@@ -1241,6 +1245,15 @@ CrashReportHelpers::WriteRegistersToJson(
     #define CRASH_MCREG_SP(uc) (static_cast<uint64_t>((uc)->uc_mcontext.__gregs[2]))
     #define CRASH_MCREG_FP(uc) (static_cast<uint64_t>((uc)->uc_mcontext.__gregs[8]))
 
+#elif defined(TARGET_S390X)
+    #define CRASH_MCREG_PC(uc) (static_cast<uint64_t>((uc)->uc_mcontext.psw.addr))
+    #define CRASH_MCREG_SP(uc) (static_cast<uint64_t>((uc)->uc_mcontext.gregs[15]))
+    #define CRASH_MCREG_FP(uc) (static_cast<uint64_t>((uc)->uc_mcontext.gregs[11]))
+
+#elif defined(TARGET_POWERPC64)
+    #define CRASH_MCREG_PC(uc) (static_cast<uint64_t>((uc)->uc_mcontext.gp_regs[32]))
+    #define CRASH_MCREG_SP(uc) (static_cast<uint64_t>((uc)->uc_mcontext.gp_regs[1]))
+    #define CRASH_MCREG_FP(uc) (static_cast<uint64_t>((uc)->uc_mcontext.gp_regs[31]))
 #else
     #error "Unsupported arch"
 #endif