1 files changed, 264 insertions, 0 deletions
diff --git a/cgen/m32r.opc b/cgen/m32r.opc
new file mode 100644
index 00000000000..601ca58d121
--- /dev/null
+++ b/cgen/m32r.opc
@@ -0,0 +1,264 @@
+/* M32R opcode support.  -*- C -*-
+   Copyright (C) 2000 Red Hat, Inc.
+   This file is part of CGEN.  */
+
+/* This file is an addendum to m32r.cpu.  Heavy use of C code isn't
+   appropriate in .cpu files, so it resides here.  This especially applies
+   to assembly/disassembly where parsing/printing can be quite involved.
+   Such things aren't really part of the specification of the cpu, per se,
+   so .cpu files provide the general framework and .opc files handle the
+   nitty-gritty details as necessary.
+
+   Each section is delimited with start and end markers.
+
+   <arch>-opc.h additions use: "-- opc.h"
+   <arch>-opc.c additions use: "-- opc.c"
+   <arch>-asm.c additions use: "-- asm.c"
+   <arch>-dis.c additions use: "-- dis.c"
+   <arch>-ibd.h additions use: "-- ibd.h"
+*/
+
+/* -- opc.h */
+
+#undef CGEN_DIS_HASH_SIZE
+#define CGEN_DIS_HASH_SIZE 256
+#undef CGEN_DIS_HASH
+#define X(b) (((unsigned char *) (b))[0] & 0xf0)
+#define CGEN_DIS_HASH(buffer, value) \
+(X (buffer) | \
+ (X (buffer) == 0x40 || X (buffer) == 0xe0 || X (buffer) == 0x60 || X (buffer) == 0x50 ? 0 \
+  : X (buffer) == 0x70 || X (buffer) == 0xf0 ? (((unsigned char *) (buffer))[0] & 0xf) \
+  : X (buffer) == 0x30 ? ((((unsigned char *) (buffer))[1] & 0x70) >> 4) \
+  : ((((unsigned char *) (buffer))[1] & 0xf0) >> 4)))
+
+/* -- */
+
+/* -- asm.c */
+
+/* Handle '#' prefixes (i.e. skip over them).  */
+
+static const char *
+parse_hash (cd, strp, opindex, valuep)
+     CGEN_CPU_DESC cd;
+     const char **strp;
+     int opindex;
+     unsigned long *valuep;
+{
+  if (**strp == '#')
+    ++*strp;
+  return NULL;
+}
+
+/* Handle shigh(), high().  */
+
+static const char *
+parse_hi16 (cd, strp, opindex, valuep)
+     CGEN_CPU_DESC cd;
+     const char **strp;
+     int opindex;
+     unsigned long *valuep;
+{
+  const char *errmsg;
+  enum cgen_parse_operand_result result_type;
+  bfd_vma value;
+
+  if (**strp == '#')
+    ++*strp;
+
+  if (strncasecmp (*strp, "high(", 5) == 0)
+    {
+      *strp += 5;
+      errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_HI16_ULO,
+				   &result_type, &value);
+      if (**strp != ')')
+	return "missing `)'";
+      ++*strp;
+      if (errmsg == NULL
+  	  && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
+	value >>= 16;
+      *valuep = value;
+      return errmsg;
+    }
+  else if (strncasecmp (*strp, "shigh(", 6) == 0)
+    {
+      *strp += 6;
+      errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_HI16_SLO,
+ 				   &result_type, &value);
+      if (**strp != ')')
+	return "missing `)'";
+      ++*strp;
+      if (errmsg == NULL
+	  && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
+	value = (value >> 16) + (value & 0x8000 ? 1 : 0);
+      *valuep = value;
+      return errmsg;
+    }
+
+  return cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
+}
+
+/* Handle low() in a signed context.  Also handle sda().
+   The signedness of the value doesn't matter to low(), but this also
+   handles the case where low() isn't present.  */
+
+static const char *
+parse_slo16 (cd, strp, opindex, valuep)
+     CGEN_CPU_DESC cd;
+     const char **strp;
+     int opindex;
+     long *valuep;
+{
+  const char *errmsg;
+  enum cgen_parse_operand_result result_type;
+  bfd_vma value;
+
+  if (**strp == '#')
+    ++*strp;
+
+  if (strncasecmp (*strp, "low(", 4) == 0)
+    {
+      *strp += 4;
+      errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_LO16,
+				   &result_type, &value);
+      if (**strp != ')')
+	return "missing `)'";
+      ++*strp;
+      if (errmsg == NULL
+	  && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
+	value &= 0xffff;
+      *valuep = value;
+      return errmsg;
+    }
+
+  if (strncasecmp (*strp, "sda(", 4) == 0)
+    {
+      *strp += 4;
+      errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_SDA16,
+				   NULL, &value);
+      if (**strp != ')')
+	return "missing `)'";
+      ++*strp;
+      *valuep = value;
+      return errmsg;
+    }
+
+  return cgen_parse_signed_integer (cd, strp, opindex, valuep);
+}
+
+/* Handle low() in an unsigned context.
+   The signedness of the value doesn't matter to low(), but this also
+   handles the case where low() isn't present.  */
+
+static const char *
+parse_ulo16 (cd, strp, opindex, valuep)
+     CGEN_CPU_DESC cd;
+     const char **strp;
+     int opindex;
+     unsigned long *valuep;
+{
+  const char *errmsg;
+  enum cgen_parse_operand_result result_type;
+  bfd_vma value;
+
+  if (**strp == '#')
+    ++*strp;
+
+  if (strncasecmp (*strp, "low(", 4) == 0)
+    {
+      *strp += 4;
+      errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_LO16,
+				   &result_type, &value);
+      if (**strp != ')')
+	return "missing `)'";
+      ++*strp;
+      if (errmsg == NULL
+	  && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
+	value &= 0xffff;
+      *valuep = value;
+      return errmsg;
+    }
+
+  return cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
+}
+
+/* -- */
+
+/* -- dis.c */
+
+/* Immediate values are prefixed with '#'.  */
+
+#define CGEN_PRINT_NORMAL(cd, info, value, attrs, pc, length) \
+do { \
+  if (CGEN_BOOL_ATTR ((attrs), CGEN_OPERAND_HASH_PREFIX)) \
+    (*info->fprintf_func) (info->stream, "#"); \
+} while (0)
+
+/* Handle '#' prefixes as operands.  */
+
+static void
+print_hash (cd, dis_info, value, attrs, pc, length)
+     CGEN_CPU_DESC cd;
+     PTR dis_info;
+     long value;
+     unsigned int attrs;
+     bfd_vma pc;
+     int length;
+{
+  disassemble_info *info = (disassemble_info *) dis_info;
+  (*info->fprintf_func) (info->stream, "#");
+}
+
+#undef CGEN_PRINT_INSN
+#define CGEN_PRINT_INSN my_print_insn
+
+static int
+my_print_insn (cd, pc, info)
+     CGEN_CPU_DESC cd;
+     bfd_vma pc;
+     disassemble_info *info;
+{
+  char buffer[CGEN_MAX_INSN_SIZE];
+  char *buf = buffer;
+  int status;
+  int buflen = (pc & 3) == 0 ? 4 : 2;
+
+  /* Read the base part of the insn.  */
+
+  status = (*info->read_memory_func) (pc, buf, buflen, info);
+  if (status != 0)
+    {
+      (*info->memory_error_func) (status, pc, info);
+      return -1;
+    }
+
+  /* 32 bit insn?  */
+  if ((pc & 3) == 0 && (buf[0] & 0x80) != 0)
+    return print_insn (cd, pc, info, buf, buflen);
+
+  /* Print the first insn.  */
+  if ((pc & 3) == 0)
+    {
+      if (print_insn (cd, pc, info, buf, 2) == 0)
+	(*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
+      buf += 2;
+    }
+
+  if (buf[0] & 0x80)
+    {
+      /* Parallel.  */
+      (*info->fprintf_func) (info->stream, " || ");
+      buf[0] &= 0x7f;
+    }
+  else
+    (*info->fprintf_func) (info->stream, " -> ");
+
+  /* The "& 3" is to pass a consistent address.
+     Parallel insns arguably both begin on the word boundary.
+     Also, branch insns are calculated relative to the word boundary.  */
+  if (print_insn (cd, pc & ~ (bfd_vma) 3, info, buf, 2) == 0)
+    (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
+
+  return (pc & 3) ? 2 : 4;
+}
+
+/* -- */