decode1: Conditional trap instructions don't need to be single-issue

They can generate interrupts, but that doesn't mean they have to
single-issue.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>

diff --git a/decode1.vhdl b/decode1.vhdl
index 07742506f0c17a1fc196625a9349713d2d45d185..baf434704217ee33bb35600e1f5f0fea2deb4739 100644 (file)
--- a/decode1.vhdl
+++ b/decode1.vhdl
@@ -114,8 +114,8 @@ architecture behaviour of decode1 is
         36 =>       (LDST, NONE, OP_STORE,     RA_OR_ZERO, CONST_SI,    RS,   NONE, '0', '0', '0', '0', ZERO, '0', is4B, '0', '0', '0', '0', '0', '0', NONE, '0', '0', NONE), -- stw
         37 =>       (LDST, NONE, OP_STORE,     RA_OR_ZERO, CONST_SI,    RS,   RA,   '0', '0', '0', '0', ZERO, '0', is4B, '0', '0', '1', '0', '0', '0', NONE, '0', '0', NONE), -- stwu
          8 =>       (ALU,  NONE, OP_ADD,       RA,         CONST_SI,    NONE, RT,   '0', '0', '1', '0', ONE,  '1', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '0', NONE), -- subfic
-         2 =>       (ALU,  NONE, OP_TRAP,      RA,         CONST_SI,    NONE, NONE, '0', '0', '0', '0', ZERO, '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '1', NONE), -- tdi
-         3 =>       (ALU,  NONE, OP_TRAP,      RA,         CONST_SI,    NONE, NONE, '0', '0', '0', '0', ZERO, '0', NONE, '0', '0', '0', '0', '1', '0', NONE, '0', '1', NONE), -- twi
+         2 =>       (ALU,  NONE, OP_TRAP,      RA,         CONST_SI,    NONE, NONE, '0', '0', '0', '0', ZERO, '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '0', NONE), -- tdi
+         3 =>       (ALU,  NONE, OP_TRAP,      RA,         CONST_SI,    NONE, NONE, '0', '0', '0', '0', ZERO, '0', NONE, '0', '0', '0', '0', '1', '0', NONE, '0', '0', NONE), -- twi
         26 =>       (ALU,  NONE, OP_XOR,       NONE,       CONST_UI,    RS,   RA,   '0', '0', '0', '0', ZERO, '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '0', NONE), -- xori
         27 =>       (ALU,  NONE, OP_XOR,       NONE,       CONST_UI_HI, RS,   RA,   '0', '0', '0', '0', ZERO, '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '0', NONE), -- xoris
         others   => illegal_inst
@@ -410,8 +410,8 @@ architecture behaviour of decode1 is
         2#0011001000#  =>       (ALU,  NONE, OP_ADD,       RA,         NONE,        NONE, RT,   '0', '0', '1', '0', CA,   '1', NONE, '0', '0', '0', '0', '0', '0', RC,   '0', '0', NONE), -- subfze
         2#1011001000#  =>       (ALU,  NONE, OP_ADD,       RA,         NONE,        NONE, RT,   '0', '0', '1', '0', CA,   '1', NONE, '0', '0', '0', '0', '0', '0', RC,   '0', '0', NONE), -- subfzeo
         2#1001010110#  =>       (ALU,  NONE, OP_NOP,       NONE,       NONE,        NONE, NONE, '0', '0', '0', '0', ZERO, '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '1', NONE), -- sync
-        2#0001000100#  =>       (ALU,  NONE, OP_TRAP,      RA,         RB,          NONE, NONE, '0', '0', '0', '0', ZERO, '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '1', NONE), -- td
-        2#0000000100#  =>       (ALU,  NONE, OP_TRAP,      RA,         RB,          NONE, NONE, '0', '0', '0', '0', ZERO, '0', NONE, '0', '0', '0', '0', '1', '0', NONE, '0', '1', NONE), -- tw
+        2#0001000100#  =>       (ALU,  NONE, OP_TRAP,      RA,         RB,          NONE, NONE, '0', '0', '0', '0', ZERO, '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '0', NONE), -- td
+        2#0000000100#  =>       (ALU,  NONE, OP_TRAP,      RA,         RB,          NONE, NONE, '0', '0', '0', '0', ZERO, '0', NONE, '0', '0', '0', '0', '1', '0', NONE, '0', '0', NONE), -- tw
         2#0100110010#  =>       (LDST, NONE, OP_TLBIE,     NONE,       RB,          RS,   NONE, '0', '0', '0', '0', ZERO, '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '0', NONE), -- tlbie
         2#0100010010#  =>       (LDST, NONE, OP_TLBIE,     NONE,       RB,          RS,   NONE, '0', '0', '0', '0', ZERO, '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '0', NONE), -- tlbiel
         2#1000110110#  =>       (ALU,  NONE, OP_NOP,       NONE,       NONE,        NONE, NONE, '0', '0', '0', '0', ZERO, '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '1', NONE), -- tlbsync