From 9b0c993ba884149028a52cde61b13bfa2770286f Mon Sep 17 00:00:00 2001
From: Dandan Zhang <zhangdandan@loongson.cn>
Date: Tue, 2 Jan 2024 12:32:19 +0000
Subject: [PATCH] add loongarch64 support

---
 .../rapidyaml/rapidyaml/ext/c4core/src/c4/cpu.hpp        | 5 +++++
 .../ext/c4core/src/c4/ext/debugbreak/debugbreak.h        | 9 +++++++++
 .../c4/ext/fast_float/include/fast_float/float_common.h  | 3 ++-
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/third_party/rapidyaml/rapidyaml/ext/c4core/src/c4/cpu.hpp b/third_party/rapidyaml/rapidyaml/ext/c4core/src/c4/cpu.hpp
index ca3f78816..c9831c5da 100644
--- a/third_party/rapidyaml/rapidyaml/ext/c4core/src/c4/cpu.hpp
+++ b/third_party/rapidyaml/rapidyaml/ext/c4core/src/c4/cpu.hpp
@@ -84,6 +84,11 @@
 #       define C4_CPU_PPC
 #       define C4_WORDSIZE 4
 #   endif
+
+#elif defined(__loongarch64)
+#   define C4_CPU_LOONGARCH64
+#   define C4_WORDSIZE 8
+#   define C4_BYTE_ORDER _C4EL
 #elif defined(SWIG)
 #else
 #   error "unknown CPU architecture"
diff --git a/third_party/rapidyaml/rapidyaml/ext/c4core/src/c4/ext/debugbreak/debugbreak.h b/third_party/rapidyaml/rapidyaml/ext/c4core/src/c4/ext/debugbreak/debugbreak.h
index f570bf845..e55d418cb 100644
--- a/third_party/rapidyaml/rapidyaml/ext/c4core/src/c4/ext/debugbreak/debugbreak.h
+++ b/third_party/rapidyaml/rapidyaml/ext/c4core/src/c4/ext/debugbreak/debugbreak.h
@@ -100,6 +100,15 @@ __inline__ static void trap_instruction(void)
 	 * 'aarch64_default_breakpoint' */
 	__asm__ volatile(".inst 0xd4200000");
 }
+#elif defined(__loongarch64)
+enum { HAVE_TRAP_INSTRUCTION = 1, };
+__attribute__((gnu_inline, always_inline))
+__inline__ static void trap_instruction(void)
+{
+	/* See 'loongarch-tdep.c' in GDB source,
+	 * 'loongarch_default_breakpoint' */
+	__asm__ volatile(".word 0x002a0005" ::: "memory");
+}
 #else
 enum { HAVE_TRAP_INSTRUCTION = 0, };
 #endif
diff --git a/third_party/rapidyaml/rapidyaml/ext/c4core/src/c4/ext/fast_float/include/fast_float/float_common.h b/third_party/rapidyaml/rapidyaml/ext/c4core/src/c4/ext/fast_float/include/fast_float/float_common.h
index cb15ac23f..39d391102 100644
--- a/third_party/rapidyaml/rapidyaml/ext/c4core/src/c4/ext/fast_float/include/fast_float/float_common.h
+++ b/third_party/rapidyaml/rapidyaml/ext/c4core/src/c4/ext/fast_float/include/fast_float/float_common.h
@@ -9,6 +9,7 @@
        || defined(__amd64) || defined(__aarch64__) || defined(_M_ARM64) \
        || defined(__MINGW64__)                                          \
        || defined(__s390x__)                                            \
+       || defined(__loongarch64)                                        \
        || (defined(__ppc64__) || defined(__PPC64__) || defined(__ppc64le__) || defined(__PPC64LE__)))
 #define FASTFLOAT_64BIT
 #elif (defined(__i386) || defined(__i386__) || defined(_M_IX86)   \
@@ -337,4 +338,4 @@ inline OStream& operator<<(OStream &out, const fast_float::decimal &d) {
   return out;
 }
 
-#endif
\ No newline at end of file
+#endif