[Qemu-devel] [PATCH 09/35] s390: Disassemble some general-instruction-extension insns.

[Richard Henderson <rth@twiddle.net>]

The full general-instruction-extension facility was added to binutils
after the change to GPLv3.  This is not the entire extension, just
what we're using in TCG.

Signed-off-by: Richard Henderson <rth@twiddle.net>
---
 s390-dis.c |   89 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 files changed, 81 insertions(+), 8 deletions(-)

diff --git a/s390-dis.c b/s390-dis.c
index 3d96be0..2eed69b 100644
--- a/s390-dis.c
+++ b/s390-dis.c
@@ -172,6 +172,31 @@ static const struct s390_operand s390_operands[];
    the instruction may be optional.  */
 #define S390_OPERAND_OPTIONAL 0x400
 
+/* QEMU-ADD */
+/* ??? Not quite the format the assembler takes, but easy to implement
+   without recourse to the table generator.  */
+#define S390_OPERAND_CCODE  0x800
+
+static const char s390_ccode_name[16][4] = {
+    "n",    /* 0000 */
+    "o",    /* 0001 */
+    "h",    /* 0010 */
+    "nle",  /* 0011 */
+    "l",    /* 0100 */
+    "nhe",  /* 0101 */
+    "lh",   /* 0110 */
+    "ne",   /* 0111 */
+    "e",    /* 1000 */
+    "nlh",  /* 1001 */
+    "he",   /* 1010 */
+    "nl",   /* 1011 */
+    "le",   /* 1100 */
+    "nh",   /* 1101 */
+    "no",   /* 1110 */
+    "a"     /* 1111 */
+};
+/* QEMU-END */
+
 #endif /* S390_H */
 
 static int init_flag = 0;
@@ -325,13 +350,16 @@ print_insn_s390 (bfd_vma memaddr, struct disassemble_info *info)
 	    continue;
 
 	  /* The instruction is valid.  */
-	  if (opcode->operands[0] != 0)
-	    (*info->fprintf_func) (info->stream, "%s\t", opcode->name);
-	  else
-	    (*info->fprintf_func) (info->stream, "%s", opcode->name);
+/* QEMU-MOD */
+         (*info->fprintf_func) (info->stream, "%s", opcode->name);
+
+         if (s390_operands[opcode->operands[0]].flags & S390_OPERAND_CCODE)
+           separator = 0;
+         else
+           separator = '\t';
+/* QEMU-END */
 
 	  /* Extract the operands.  */
-	  separator = 0;
 	  for (opindex = opcode->operands; *opindex != 0; opindex++)
 	    {
 	      unsigned int value;
@@ -363,6 +391,15 @@ print_insn_s390 (bfd_vma memaddr, struct disassemble_info *info)
 		(*info->print_address_func) (memaddr + (int) value, info);
 	      else if (operand->flags & S390_OPERAND_SIGNED)
 		(*info->fprintf_func) (info->stream, "%i", (int) value);
+/* QEMU-ADD */
+              else if (operand->flags & S390_OPERAND_CCODE)
+                {
+		  (*info->fprintf_func) (info->stream, "%s",
+                                         s390_ccode_name[(int) value]);
+                  separator = '\t';
+                  continue;
+                }
+/* QEMU-END */
 	      else
 		(*info->fprintf_func) (info->stream, "%u", value);
 
@@ -543,8 +580,16 @@ static const struct s390_operand s390_operands[] =
 #define M_16   42                 /* 4 bit optional mask starting at 16 */
   { 4, 16, S390_OPERAND_OPTIONAL },
 #define RO_28  43                 /* optional GPR starting at position 28 */
-  { 4, 28, (S390_OPERAND_GPR | S390_OPERAND_OPTIONAL) }
-
+  { 4, 28, (S390_OPERAND_GPR | S390_OPERAND_OPTIONAL) },
+
+/* QEMU-ADD: */
+#define M4_12 44                  /* 4-bit condition-code starting at 12 */
+  { 4, 12, S390_OPERAND_CCODE },
+#define M4_32 45                  /* 4-bit condition-code starting at 32 */
+  { 4, 32, S390_OPERAND_CCODE },
+#define I8_32 46                  /* 8 bit signed value starting at 32 */
+  { 8, 32, S390_OPERAND_SIGNED },
+/* QEMU-END */
 };
 
 
@@ -755,6 +800,14 @@ static const struct s390_operand s390_operands[] =
 #define MASK_S_RD        { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }
 #define MASK_SSF_RRDRD   { 0xff, 0x0f, 0x00, 0x00, 0x00, 0x00 }
 
+/* QEMU-ADD: */
+#define INSTR_RIE_MRRP   6, { M4_32,R_8,R_12,J16_16,0,0 }	/* e.g. crj */
+#define MASK_RIE_MRRP    { 0xff, 0x00, 0x00, 0x00, 0x0f, 0xff }
+
+#define INSTR_RIE_MRIP   6, { M4_12,R_8,I8_32,J16_16,0,0 }      /* e.g. cij */
+#define MASK_RIE_MRIP    { 0xff, 0x00, 0x00, 0x00, 0x00, 0xff }
+/* QEMU-END */
+
 /* The opcode formats table (blueprints for .insn pseudo mnemonic).  */
 
 static const struct s390_opcode s390_opformats[] =
@@ -1092,6 +1145,10 @@ static const struct s390_opcode s390_opcodes[] =
   { "agfi", OP16(0xc208LL), MASK_RIL_RI, INSTR_RIL_RI, 2, 4},
   { "slfi", OP16(0xc205LL), MASK_RIL_RU, INSTR_RIL_RU, 2, 4},
   { "slgfi", OP16(0xc204LL), MASK_RIL_RU, INSTR_RIL_RU, 2, 4},
+/* QEMU-ADD: */
+  { "msfi",  OP16(0xc201ll), MASK_RIL_RI, INSTR_RIL_RI, 3, 6},
+  { "msgfi", OP16(0xc200ll), MASK_RIL_RI, INSTR_RIL_RI, 3, 6},
+/* QEMU-END */
   { "jg", OP16(0xc0f4LL), MASK_RIL_0P, INSTR_RIL_0P, 3, 2},
   { "jgno", OP16(0xc0e4LL), MASK_RIL_0P, INSTR_RIL_0P, 3, 2},
   { "jgnh", OP16(0xc0d4LL), MASK_RIL_0P, INSTR_RIL_0P, 3, 2},
@@ -1716,7 +1773,23 @@ static const struct s390_opcode s390_opcodes[] =
   { "pfpo", OP16(0x010aLL), MASK_E, INSTR_E, 2, 5},
   { "sckpf", OP16(0x0107LL), MASK_E, INSTR_E, 3, 0},
   { "upt", OP16(0x0102LL), MASK_E, INSTR_E, 3, 0},
-  { "pr", OP16(0x0101LL), MASK_E, INSTR_E, 3, 0}
+  { "pr", OP16(0x0101LL), MASK_E, INSTR_E, 3, 0},
+
+/* QEMU-ADD: */
+  { "crj",   OP48(0xec0000000076LL), MASK_RIE_MRRP, INSTR_RIE_MRRP, 3, 6},
+  { "cgrj",  OP48(0xec0000000064LL), MASK_RIE_MRRP, INSTR_RIE_MRRP, 3, 6},
+  { "clrj",  OP48(0xec0000000077LL), MASK_RIE_MRRP, INSTR_RIE_MRRP, 3, 6},
+  { "clgrj", OP48(0xec0000000065LL), MASK_RIE_MRRP, INSTR_RIE_MRRP, 3, 6},
+
+  { "cij",   OP48(0xec000000007eLL), MASK_RIE_MRIP, INSTR_RIE_MRIP, 3, 6},
+  { "cgij",  OP48(0xec000000007cLL), MASK_RIE_MRIP, INSTR_RIE_MRIP, 3, 6},
+  { "clij",  OP48(0xec000000007fLL), MASK_RIE_MRIP, INSTR_RIE_MRIP, 3, 6},
+  { "clgij", OP48(0xec000000007dLL), MASK_RIE_MRIP, INSTR_RIE_MRIP, 3, 6},
+
+  { "lrl",   OP16(0xc40dll), MASK_RIL_RP, INSTR_RIL_RP, 3, 6},
+  { "lgrl",  OP16(0xc408ll), MASK_RIL_RP, INSTR_RIL_RP, 3, 6},
+  { "lgfrl", OP16(0xc40cll), MASK_RIL_RP, INSTR_RIL_RP, 3, 6},
+/* QEMU-END */
 };
 
 static const int s390_num_opcodes =
-- 
1.7.0.1