[sgen] Performance improvement for ms_block_size computations

[mono.git] / mono / sgen / sgen-archdep.h

diff --git a/mono/sgen/sgen-archdep.h b/mono/sgen/sgen-archdep.h
index 976f4be6d833f456151b7203995bcfc1cef80139..9fa6e2141c2e620e4a9d7d6b5671030019407e8a 100644 (file)
--- a/mono/sgen/sgen-archdep.h
+++ b/mono/sgen/sgen-archdep.h
@@ -1,5 +1,6 @@
-/*
- * sgen-archdep.h: Architecture dependent parts of SGen.
+/**
+ * \file
+ * Architecture dependent parts of SGen.
  *
  * Copyright 2001-2003 Ximian, Inc
  * Copyright 2003-2010 Novell, Inc.
@@ -12,63 +13,35 @@
 
 #include <mono/utils/mono-context.h>
 
-/*
- * Define either USE_MONO_CTX, or
- * ARCH_SIGCTX_SP/ARCH_SIGCTX_IP/ARCH_STORE_REGS/ARCH_COPY_SIGCTX_REGS.
- * Define ARCH_NUM_REGS to be the number of general registers in MonoContext, or the
- * number of registers stored by ARCH_STORE_REGS.
- */
-
 #if defined(MONO_CROSS_COMPILE)
 
 #define REDZONE_SIZE   0
 
-#define ARCH_NUM_REGS 0
-#define ARCH_STORE_REGS(ptr)
-#define ARCH_SIGCTX_SP(ctx) NULL
-#define ARCH_SIGCTX_IP(ctx) NULL
-#define ARCH_COPY_SIGCTX_REGS(a,ctx)
-
 #elif defined(TARGET_X86)
 
 #define REDZONE_SIZE   0
 
-#define ARCH_NUM_REGS 8
-
 #ifndef MONO_ARCH_HAS_MONO_CONTEXT
 #error 0
 #endif
 
-#define USE_MONO_CTX
-
 #elif defined(TARGET_AMD64)
 
+#ifdef HOST_WIN32
+/* The Windows x64 ABI defines no "red zone". The ABI states:
+   "All memory beyond the current address of RSP is considered volatile" */
+#define REDZONE_SIZE   0
+#else
 #define REDZONE_SIZE   128
-
-#define ARCH_NUM_REGS 16
-#define USE_MONO_CTX
+#endif
 
 #elif defined(TARGET_POWERPC)
 
 #define REDZONE_SIZE   224
 
-#define ARCH_NUM_REGS 32
-#define USE_MONO_CTX
-
-/* MS_BLOCK_SIZE must be a multiple of the system pagesize, which for some
-   architectures is 64k.  */
-#if defined(TARGET_POWERPC) || defined(TARGET_POWERPC64)
-#define ARCH_MIN_MS_BLOCK_SIZE (64*1024)
-#define ARCH_MIN_MS_BLOCK_SIZE_SHIFT   16
-#endif
-
 #elif defined(TARGET_ARM)
 
 #define REDZONE_SIZE   0
-#define USE_MONO_CTX
-
-/* We dont store ip, sp */
-#define ARCH_NUM_REGS 14
 
 #elif defined(TARGET_ARM64)
 
@@ -79,31 +52,19 @@
 #else
 #error "Not implemented."
 #endif
-#define USE_MONO_CTX
-#define ARCH_NUM_REGS 31
 
 #elif defined(__mips__)
 
 #define REDZONE_SIZE   0
 
-#define USE_MONO_CTX
-#define ARCH_NUM_REGS 32
-
 #elif defined(__s390x__)
 
 #define REDZONE_SIZE   0
 
-#define USE_MONO_CTX
-#define ARCH_NUM_REGS 16       
-
 #elif defined(__sparc__)
 
 #define REDZONE_SIZE   0
 
-/* Don't bother with %g0 (%r0), it's always hard-coded to zero */
-#define ARCH_NUM_REGS 15       
-#define USE_MONO_CTX
-
 #endif
 
 #endif /* __MONO_SGENARCHDEP_H__ */