File riscv64-support.patch of Package libEMF
From: Bo YU <tsu.yubo@gmail.com>
Date: Mon, 27 Jun 2022 20:11:46 +0800
Subject: add-support-riscv64
add support for riscv64 arch
Original reference e2k code for supporting riscv64 arch
---
include/libEMF/wine/winnt.h | 75 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 75 insertions(+)
diff --git a/include/libEMF/wine/winnt.h b/include/libEMF/wine/winnt.h
index 39e2f90..1609f38 100644
--- a/include/libEMF/wine/winnt.h
+++ b/include/libEMF/wine/winnt.h
@@ -69,6 +69,10 @@
# define WORDS_BIGENDIAN
# define BITFIELDS_BIGENDIAN
# undef ALLOW_UNALIGNED_ACCESS
+#elif defined(__riscv) && defined(__riscv_xlen) && __riscv_xlen == 64
+# undef WORDS_BIGENDIAN
+# undef BITFIELDS_BIGENDIAN
+# undef ALLOW_UNALIGNED_ACCESS
#elif !defined(RC_INVOKED)
# error Unknown CPU architecture!
#endif
@@ -1582,6 +1586,77 @@ typedef struct _CONTEXT {
#endif /* __e2k__ */
+#ifdef __riscv && __riscv_xlen==64
+/*
+ * FIXME:
+ *
+ * There is not yet an official CONTEXT structure defined for the
+ * riscv64 architecture (64-bit LE), so I just made one up.
+ *
+ */
+
+#define CONTEXT_RISCV64 0x4000000
+#define CONTEXT_CONTROL (CONTEXT_RISCV64 | 0x00000001)
+#define CONTEXT_INTEGER (CONTEXT_RISCV64 | 0x00000002)
+#define CONTEXT_FLOATING_POINT (CONTEXT_RISCV64 | 0x00000004)
+#define CONTEXT_DEBUG_REGISTERS (CONTEXT_RISCV64 | 0x00000008)
+
+#define CONTEXT_FULL (CONTEXT_CONTROL | CONTEXT_INTEGER)
+
+#define EXCEPTION_READ_FAULT 0
+#define EXCEPTION_WRITE_FAULT 1
+#define EXCEPTION_EXECUTE_FAULT 8
+
+typedef struct _CONTEXT {
+ ULONG ContextFlags;
+
+ /* This section is specified/returned if the ContextFlags word contains
+ the flag CONTEXT_INTEGER. */
+ ULONGLONG X0;
+ ULONGLONG X1;
+ ULONGLONG X2;
+ ULONGLONG X3;
+ ULONGLONG X4;
+ ULONGLONG X5;
+ ULONGLONG X6;
+ ULONGLONG X7;
+ ULONGLONG X8;
+ ULONGLONG X9;
+ ULONGLONG X10;
+ ULONGLONG X11;
+ ULONGLONG X12;
+ ULONGLONG X13;
+ ULONGLONG X14;
+ ULONGLONG X15;
+ ULONGLONG X16;
+ ULONGLONG X17;
+ ULONGLONG X18;
+ ULONGLONG X19;
+ ULONGLONG X20;
+ ULONGLONG X21;
+ ULONGLONG X22;
+ ULONGLONG X23;
+ ULONGLONG X24;
+ ULONGLONG X25;
+ ULONGLONG X26;
+ ULONGLONG X27;
+ ULONGLONG X28;
+ ULONGLONG X29;
+ ULONGLONG X30;
+ ULONGLONG X31;
+
+ /* These are selected by CONTEXT_CONTROL */
+ ULONGLONG Sp;
+ ULONGLONG Pc;
+ ULONGLONG PState;
+
+ /* These are selected by CONTEXT_FLOATING_POINT */
+ /* FIXME */
+} CONTEXT;
+
+#endif /* __riscv64__ */
+
+
#if !defined(CONTEXT_FULL) && !defined(RC_INVOKED)
#error You need to define a CONTEXT for your CPU
#endif
