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ruby-changes:65209

From: Yusuke <ko1@a...>
Date: Wed, 10 Feb 2021 04:40:52 +0900 (JST)
Subject: [ruby-changes:65209] 66394aec98 (master): vm_dump.c: Dump machine registers on RISC-V Linux

https://git.ruby-lang.org/ruby.git/commit/?id=66394aec98

From 66394aec9813e52751e2b099ee6a4814ace494f8 Mon Sep 17 00:00:00 2001
From: Yusuke Endoh <mame@r...>
Date: Wed, 10 Feb 2021 04:39:41 +0900
Subject: vm_dump.c: Dump machine registers on RISC-V Linux

Fixes [Bug #17615]

Co-Authored-By: xtkoba (Tee KOBAYASHI) <xtkoba+ruby@g...>
---
 vm_dump.c | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/vm_dump.c b/vm_dump.c
index 279164c..a6c8eaa 100644
--- a/vm_dump.c
+++ b/vm_dump.c
@@ -781,7 +781,7 @@ rb_print_backtrace(void) https://github.com/ruby/ruby/blob/trunk/vm_dump.c#L781
 #endif
 
 #if defined __linux__
-# if defined __x86_64__ || defined __i386__ || defined __aarch64__ || defined __arm__
+# if defined __x86_64__ || defined __i386__ || defined __aarch64__ || defined __arm__ || defined __riscv
 #  define HAVE_PRINT_MACHINE_REGISTERS 1
 # endif
 #elif defined __APPLE__
@@ -813,7 +813,7 @@ print_machine_register(size_t reg, const char *reg_name, int col_count, int max_ https://github.com/ruby/ruby/blob/trunk/vm_dump.c#L813
 # ifdef __linux__
 #   if defined(__x86_64__) || defined(__i386__)
 #       define dump_machine_register(reg) (col_count = print_machine_register(mctx->gregs[REG_##reg], #reg, col_count, 80))
-#   elif defined(__aarch64__) || defined(__arm__)
+#   elif defined(__aarch64__) || defined(__arm__) || defined(__riscv)
 #       define dump_machine_register(reg, regstr) (col_count = print_machine_register(reg, regstr, col_count, 80))
 #   endif
 # elif defined __APPLE__
@@ -908,6 +908,28 @@ rb_dump_machine_register(const ucontext_t *ctx) https://github.com/ruby/ruby/blob/trunk/vm_dump.c#L908
 	dump_machine_register(mctx->arm_r10, "r10");
 	dump_machine_register(mctx->arm_sp, "sp");
 	dump_machine_register(mctx->fault_address, "fault_address");
+#   elif defined __riscv
+	dump_machine_register(mctx->__gregs[REG_SP], "sp");
+	dump_machine_register(mctx->__gregs[REG_S0], "s0");
+	dump_machine_register(mctx->__gregs[REG_S1], "s1");
+	dump_machine_register(mctx->__gregs[REG_A0], "a0");
+	dump_machine_register(mctx->__gregs[REG_A0+1], "a1");
+	dump_machine_register(mctx->__gregs[REG_A0+2], "a2");
+	dump_machine_register(mctx->__gregs[REG_A0+3], "a3");
+	dump_machine_register(mctx->__gregs[REG_A0+4], "a4");
+	dump_machine_register(mctx->__gregs[REG_A0+5], "a5");
+	dump_machine_register(mctx->__gregs[REG_A0+6], "a6");
+	dump_machine_register(mctx->__gregs[REG_A0+7], "a7");
+	dump_machine_register(mctx->__gregs[REG_S2], "s2");
+	dump_machine_register(mctx->__gregs[REG_S2+1], "s3");
+	dump_machine_register(mctx->__gregs[REG_S2+2], "s4");
+	dump_machine_register(mctx->__gregs[REG_S2+3], "s5");
+	dump_machine_register(mctx->__gregs[REG_S2+4], "s6");
+	dump_machine_register(mctx->__gregs[REG_S2+5], "s7");
+	dump_machine_register(mctx->__gregs[REG_S2+6], "s8");
+	dump_machine_register(mctx->__gregs[REG_S2+7], "s9");
+	dump_machine_register(mctx->__gregs[REG_S2+8], "s10");
+	dump_machine_register(mctx->__gregs[REG_S2+9], "s11");
 #   endif
     }
 # elif defined __APPLE__
-- 
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