* mn10200-opc.c (mn10200_operands): Add SIMM16N.

        (mn10200_opcodes): Use it for some logicals and btst insns.
        Add "break" and "trap" instructions.

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index f1e568016f2975cbcf8f8fc8b8fb97290a948cf4..f9a5e5836906accbf727416b9f8269ce125b6222 100644 (file)
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,5 +1,9 @@
 Mon Dec 16 13:00:15 1996  Jeffrey A Law  (law@cygnus.com)
 
+       * mn10200-opc.c (mn10200_operands): Add SIMM16N.
+       (mn10200_opcodes): Use it for some logicals and btst insns.
+       Add "break" and "trap" instructions.
+
        * mn10300-opc.c (mn10300_opcodes): Add "break" instruction.
 
        * mn10200-opc.c: Add pseudo-ops for "mov (an),am" and "mov an,(am)".

diff --git a/opcodes/mn10200-opc.c b/opcodes/mn10200-opc.c
index 9f420f6872e10c86a996d307e171d1e79adf11f6..20248998cae6f9c837ffe1d69815791972645441 100644 (file)
--- a/opcodes/mn10200-opc.c
+++ b/opcodes/mn10200-opc.c
@@ -121,8 +121,12 @@ const struct mn10200_operand mn10200_operands[] = {
 #define SIMM16    (SIMM8+1)
   {16, 0, MN10200_OPERAND_SIGNED | MN10200_OPERAND_PROMOTE},
 
+/* 16 bit signed immediate which may not promote.  */
+#define SIMM16N    (SIMM16+1)
+  {16, 0, MN10200_OPERAND_SIGNED | MN10200_OPERAND_NOCHECK},
+
 /* Either an open paren or close paren.  */
-#define PAREN  (SIMM16+1)
+#define PAREN  (SIMM16N+1)
   {0, 0, MN10200_OPERAND_PAREN}, 
 
 /* dn register that appears in the first and second register positions.  */
@@ -271,14 +275,14 @@ const struct mn10200_opcode mn10200_opcodes[] = {
 
 { "and",       0xf300,         0xfff0,         FMT_4, {DN1, DM0}},
 { "and",       0xf50000,       0xfffc00,       FMT_5, {IMM8, DN0}},
-{ "and",       0xf7000000,     0xfffc0000,     FMT_6, {IMM16, DN0}},
-{ "and",       0xf7100000,     0xffff0000,     FMT_6, {IMM16, PSW}},
+{ "and",       0xf7000000,     0xfffc0000,     FMT_6, {SIMM16N, DN0}},
+{ "and",       0xf7100000,     0xffff0000,     FMT_6, {SIMM16N, PSW}},
 { "or",                0xf310,         0xfff0,         FMT_4, {DN1, DM0}},
 { "or",                0xf50800,       0xfffc00,       FMT_5, {IMM8, DN0}},
-{ "or",                0xf7400000,     0xfffc0000,     FMT_6, {IMM16, DN0}},
-{ "or",                0xf7140000,     0xffff0000,     FMT_6, {IMM16, PSW}},
+{ "or",                0xf7400000,     0xfffc0000,     FMT_6, {SIMM16N, DN0}},
+{ "or",                0xf7140000,     0xffff0000,     FMT_6, {SIMM16N, PSW}},
 { "xor",       0xf320,         0xfff0,         FMT_4, {DN1, DM0}},
-{ "xor",       0xf74c0000,     0xfffc0000,     FMT_6, {IMM16, DN0}},
+{ "xor",       0xf74c0000,     0xfffc0000,     FMT_6, {SIMM16N, DN0}},
 { "not",       0xf3e4,         0xfffc,         FMT_4, {DN0}},
 
 { "asr",       0xf338,         0xfffc,         FMT_4, {DN0}},
@@ -287,7 +291,7 @@ const struct mn10200_opcode mn10200_opcodes[] = {
 { "rol",       0xf330,         0xfffc,         FMT_4, {DN0}},
 
 { "btst",      0xf50400,       0xfffc00,       FMT_5, {IMM8, DN0}},
-{ "btst",      0xf7040000,     0xfffc0000,     FMT_6, {IMM16, DN0}},
+{ "btst",      0xf7040000,     0xfffc0000,     FMT_6, {SIMM16N, DN0}},
 { "bset",      0xf020,         0xfff0,         FMT_4, {DM0, MEM(AN1)}},
 { "bclr",      0xf030,         0xfff0,         FMT_4, {DM0, MEM(AN1)}},
 
@@ -333,6 +337,19 @@ const struct mn10200_opcode mn10200_opcodes[] = {
 
 { "rts",       0xfe,           0xff,           FMT_1, {UNUSED}},
 { "rti",       0xeb,           0xff,           FMT_1, {UNUSED}},
+
+/* Extension.  We need some instruction to trigger "emulated syscalls"
+   for our simulator.  */
+{ "trap",      0xf010,         0xffff,         FMT_4, {UNUSED}},
+
+/* Extension.  When talking to the simulator, gdb requires some instruction
+   that will trigger a "breakpoint" (really just an instruction that isn't
+   otherwise used by the tools.  This instruction must be the same size
+   as the smallest instruction on the target machine.  In the case of the
+   mn10x00 the "break" instruction must be one byte.  0xff is available on
+   both mn10x00 architectures.  */
+{ "break",      0xff,           0xff,           FMT_1, {UNUSED}},
+
 { 0, 0, 0, 0, {0}},
 
 } ;