[dev.power64] cmd/9l/9.out.h: introduce NFREG, REGG, REGRT1 and REGRT2

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/125990043

diff --git a/src/cmd/9l/9.out.h b/src/cmd/9l/9.out.h
index 6e4f9ee1b6ee90a86870d9a9d7019a8e70ec06fd..e494e90ca96fd2f8a9c661b5165770f7d01cd4a6 100644 (file)
--- a/src/cmd/9l/9.out.h
+++ b/src/cmd/9l/9.out.h
@@ -32,7 +32,8 @@
  */
 #define        NSNAME  8
 #define        NSYM    50
-#define        NREG    32
+#define        NREG    32      /* number of general registers */
+#define        NFREG   32      /* number of floating point registers */
 
 #include "../ld/textflag.h"
 
@@ -43,17 +44,20 @@ enum
        REGSB           = 2,
        REGRET          = 3,
        REGARG          = -1,   /* -1 disables passing the first argument in register */
+       REGRT1          = 3,    /* reserved for runtime, duffzero and duffcopy */
+       REGRT2          = 4,    /* reserved for runtime, duffcopy */
        REGMIN          = 7,    /* register variables allocated from here to REGMAX */
-       REGENV          = 11,   /* environment variable for closures */
+       REGENV          = 11,   /* environment for closures */
        REGMAX          = 27,
        REGEXT          = 30,   /* external registers allocated from here down */
+       REGG            = 30,   /* G */
        REGTMP          = 31,   /* used by the linker */
 
        FREGRET         = 0,
        FREGMIN         = 17,   /* first register variable */
        FREGMAX         = 26,   /* last register variable for 9g only */
        FREGEXT         = 26,   /* first external register */
-       FREGCVI         = 27, /* floating conversion constant */
+       FREGCVI         = 27,   /* floating conversion constant */
        FREGZERO        = 28,   /* both float and double */
        FREGHALF        = 29,   /* double */
        FREGONE         = 30,   /* double */