Split Reg into vreg/hreg and add register pairs

[ghc-hetmet.git] / includes / MachRegs.h

diff --git a/includes/MachRegs.h b/includes/MachRegs.h
index f51f782..d607532 100644 (file)
--- a/includes/MachRegs.h
+++ b/includes/MachRegs.h
@@ -543,6 +543,10 @@
 /* -----------------------------------------------------------------------------
    The Sun SPARC register mapping
 
+   !! IMPORTANT: if you change this register mapping you must also update
+                 compiler/nativeGen/SPARC/Regs.hs. That file handles the
+                 mapping for the NCG. This one only affects via-c code.
+
    The SPARC register (window) story: Remember, within the Haskell
    Threaded World, we essentially ``shut down'' the register-window
    mechanism---the window doesn't move at all while in this World.  It
@@ -590,11 +594,11 @@
      %i1        Base
      %i2        SpLim
      %i3        Hp
+     %i4        alloc
      %i5        R6
      %i6                    C frame ptr
      %i7                    C ret addr
      
-
    The paired nature of the floating point registers causes complications for
    the native code generator.  For convenience, we pretend that the first 22
    fp regs %f0 .. %f21 are actually 11 double regs, and the remaining 10 are
@@ -651,8 +655,15 @@
 #define REG_F2         f23
 #define REG_F3         f24
 #define REG_F4         f25
+
+/* for each of the double arg regs, 
+   Dn_2 is the high half. */
+   
 #define REG_D1         f2
+#define REG_D1_2       f3
+
 #define REG_D2         f4
+#define REG_D2_2       f5
 
 #define REG_Sp         i0
 #define REG_SpLim      i2