Modified Win32 register function handling.
diff --git a/include/winnt.h b/include/winnt.h
index 5bc9df1..e00a560 100644
--- a/include/winnt.h
+++ b/include/winnt.h
@@ -561,6 +561,8 @@
typedef struct _CONTEXT
{
+ DWORD ContextFlags;
+
/* These are selected by CONTEXT_INTEGER */
DWORD g0;
DWORD g1;
@@ -664,6 +666,63 @@
#define ISV86(context) (EFL_reg(context) & 0x00020000)
#define V86BASE(context) ((context)->Dr7) /* ugly */
+
+/* Macros to retrieve the current context */
+
+#ifdef __i386__
+#define _DEFINE_REGS_ENTRYPOINT( name, fn, args ) \
+ __asm__(".align 4\n\t" \
+ ".globl " #name "\n\t" \
+ ".type " #name ",@function\n\t" \
+ #name ":\n\t" \
+ "call CALL32_Regs\n\t" \
+ ".long " #fn "\n\t" \
+ ".byte " #args ", " #args "\n\t");
+
+#define DEFINE_REGS_ENTRYPOINT_0( name, fn ) \
+ _DEFINE_REGS_ENTRYPOINT( name, fn, 0 )
+#define DEFINE_REGS_ENTRYPOINT_1( name, fn, t1 ) \
+ _DEFINE_REGS_ENTRYPOINT( name, fn, 4 )
+#define DEFINE_REGS_ENTRYPOINT_2( name, fn, t1, t2 ) \
+ _DEFINE_REGS_ENTRYPOINT( name, fn, 8 )
+#define DEFINE_REGS_ENTRYPOINT_3( name, fn, t1, t2, t3 ) \
+ _DEFINE_REGS_ENTRYPOINT( name, fn, 12 )
+#define DEFINE_REGS_ENTRYPOINT_4( name, fn, t1, t2, t3, t4 ) \
+ _DEFINE_REGS_ENTRYPOINT( name, fn, 16 )
+
+#endif /* __i386__ */
+
+#ifdef __sparc__
+/* FIXME: use getcontext() to retrieve full context */
+#define _GET_CONTEXT \
+ CONTEXT context; \
+ do { memset(&context, 0, sizeof(CONTEXT)); \
+ context.ContextFlags = CONTEXT_CONTROL; \
+ context.pc = (DWORD)__builtin_return_address(0); \
+ } while (0)
+
+#define DEFINE_REGS_ENTRYPOINT_0( name, fn ) \
+ void WINAPI name ( void ) \
+ { _GET_CONTEXT; fn( &context ); }
+#define DEFINE_REGS_ENTRYPOINT_1( name, fn, t1 ) \
+ void WINAPI name ( t1 a1 ) \
+ { _GET_CONTEXT; fn( a1, &context ); }
+#define DEFINE_REGS_ENTRYPOINT_2( name, fn, t1, t2 ) \
+ void WINAPI name ( t1 a1, t2 a2 ) \
+ { _GET_CONTEXT; fn( a1, a2, &context ); }
+#define DEFINE_REGS_ENTRYPOINT_3( name, fn, t1, t2, t3 ) \
+ void WINAPI name ( t1 a1, t2 a2, t3 a3 ) \
+ { _GET_CONTEXT; fn( a1, a2, a3, &context ); }
+#define DEFINE_REGS_ENTRYPOINT_4( name, fn, t1, t2, t3, t4 ) \
+ void WINAPI name ( t1 a1, t2 a2, t3 a3, t4 a4 ) \
+ { _GET_CONTEXT; fn( a1, a2, a3, a4, &context ); }
+
+#endif /* __sparc__ */
+
+#ifndef DEFINE_REGS_ENTRYPOINT_0
+#error You need to define DEFINE_REGS_ENTRYPOINT macros for your CPU
+#endif
+
#ifdef __i386__
# define GET_IP(context) ((LPVOID)(context)->Eip)
#endif
