+\f
+#if ! CGEN_INT_INSN_P
+
+/* Subroutine of insert_normal. */
+
+static INLINE void
+insert_1 (od, value, start, length, word_length, bufp)
+ CGEN_OPCODE_DESC od;
+ unsigned long value;
+ int start,length,word_length;
+ unsigned char *bufp;
+{
+ unsigned long x,mask;
+ int shift;
+ int big_p = CGEN_OPCODE_INSN_ENDIAN (od) == CGEN_ENDIAN_BIG;
+
+ switch (word_length)
+ {
+ case 8:
+ x = *bufp;
+ break;
+ case 16:
+ if (big_p)
+ x = bfd_getb16 (bufp);
+ else
+ x = bfd_getl16 (bufp);
+ break;
+ case 24:
+ /* ??? This may need reworking as these cases don't necessarily
+ want the first byte and the last two bytes handled like this. */
+ if (big_p)
+ x = (bfd_getb8 (bufp) << 16) | bfd_getb16 (bufp + 1);
+ else
+ x = bfd_getl16 (bufp) | (bfd_getb8 (bufp + 2) << 16);
+ break;
+ case 32:
+ if (big_p)
+ x = bfd_getb32 (bufp);
+ else
+ x = bfd_getl32 (bufp);
+ break;
+ default :
+ abort ();
+ }
+
+ /* Written this way to avoid undefined behaviour. */
+ mask = (((1L << (length - 1)) - 1) << 1) | 1;
+ if (CGEN_INSN_LSB0_P)
+ shift = start;
+ else
+ shift = (word_length - (start + length));
+ x = (x & ~(mask << shift)) | ((value & mask) << shift);
+
+ switch (word_length)
+ {
+ case 8:
+ *bufp = x;
+ break;
+ case 16:
+ if (big_p)
+ bfd_putb16 (x, bufp);
+ else
+ bfd_putl16 (x, bufp);
+ break;
+ case 24:
+ /* ??? This may need reworking as these cases don't necessarily
+ want the first byte and the last two bytes handled like this. */
+ if (big_p)
+ {
+ bfd_putb8 (x >> 16, bufp);
+ bfd_putb16 (x, bufp + 1);
+ }
+ else
+ {
+ bfd_putl16 (x, bufp);
+ bfd_putb8 (x >> 16, bufp + 2);
+ }
+ break;
+ case 32:
+ if (big_p)
+ bfd_putb32 (x, bufp);
+ else
+ bfd_putl32 (x, bufp);
+ break;
+ default :
+ abort ();
+ }
+}
+
+#endif /* ! CGEN_INT_INSN_P */
+
+/* Default insertion routine.
+
+ ATTRS is a mask of the boolean attributes.
+ START is the starting bit number, architecture origin.
+ LENGTH is the length of VALUE in bits.
+ TOTAL_LENGTH is the total length of the insn.
+
+ The result is an error message or NULL if success. */
+
+/* ??? May need to know word length in order to properly place values as
+ an insn may be made of multiple words and the current bit number handling
+ may be insufficient. Word length is an architectural attribute and thus
+ methinks the way to go [if needed] is to fetch this value from OD or
+ define a macro in <arch>-opc.h rather than adding an extra argument -
+ after all that's how endianness is handled. */
+/* ??? This duplicates functionality with bfd's howto table and
+ bfd_install_relocation. */
+/* ??? For architectures where insns can be representable as ints,
+ store insn in `field' struct and add registers, etc. while parsing? */
+/* ??? This doesn't handle bfd_vma's. Create another function when
+ necessary. */
+
+static const char *
+insert_normal (od, value, attrs, start, length, total_length, buffer)
+ CGEN_OPCODE_DESC od;
+ long value;
+ unsigned int attrs;
+ int start;
+ int length;
+ int total_length;
+ CGEN_INSN_BYTES_PTR buffer;
+{
+ static char errbuf[100];
+ /* Written this way to avoid undefined behaviour. */
+ unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1;
+
+ /* If LENGTH is zero, this operand doesn't contribute to the value. */
+ if (length == 0)
+ return NULL;
+
+ /* Ensure VALUE will fit. */
+ if ((attrs & CGEN_ATTR_MASK (CGEN_OPERAND_UNSIGNED)) != 0)
+ {
+ unsigned long maxval = mask;
+ if ((unsigned long) value > maxval)
+ {
+ /* xgettext:c-format */
+ sprintf (errbuf,
+ _("operand out of range (%lu not between 0 and %lu)"),
+ value, maxval);
+ return errbuf;
+ }
+ }
+ else
+ {
+ long minval = - (1L << (length - 1));
+ long maxval = (1L << (length - 1)) - 1;
+ if (value < minval || value > maxval)
+ {
+ sprintf
+ /* xgettext:c-format */
+ (errbuf, _("operand out of range (%ld not between %ld and %ld)"),
+ value, minval, maxval);
+ return errbuf;
+ }
+ }
+
+#if CGEN_INT_INSN_P
+
+ if (total_length > 32)
+ abort ();
+ {
+ int shift;
+
+ if (CGEN_INSN_LSB0_P)
+ shift = start;
+ else
+ shift = total_length - (start + length);
+ *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift);
+ }
+
+#else
+
+ /* FIXME: unfinished and untested */
+
+/* ??? To be defined in <arch>-opc.h as necessary. */
+#ifndef CGEN_WORD_ENDIAN
+#define CGEN_WORD_ENDIAN(od) CGEN_OPCODE_ENDIAN (od)
+#endif
+#ifndef CGEN_INSN_WORD_ENDIAN
+#define CGEN_INSN_WORD_ENDIAN(od) CGEN_WORD_ENDIAN (od)
+#endif
+
+ /* The hard case is probably too slow for the normal cases.
+ It's certainly more difficult to understand than the normal case.
+ Thus this is split into two. Keep it that way. The hard case is defined
+ to be when a field straddles a (loosely defined) word boundary
+ (??? which may require target specific help to determine). */
+
+#if 0 /*wip*/
+
+#define HARD_CASE_P 0 /* FIXME:wip */
+
+ if (HARD_CASE_P)
+ {
+ unsigned char *bufp = (unsigned char *) buffer;
+ int insn_length_left = total_length;
+
+ if (CGEN_INSN_LSB0_P)
+ {
+ int word_offset = (CGEN_INSN_WORD_ENDIAN (od) == CGEN_ENDIAN_BIG
+ ? ...
+ : start / CGEN_BASE_INSN_BITSIZE);
+ bufp += word_offset * (CGEN_BASE_INSN_BITSIZE / 8);
+ if (CGEN_INSN_WORD_ENDIAN (od) == CGEN_ENDIAN_BIG)
+ else
+ start -= word_offset * CGEN_BASE_INSN_BITSIZE;
+ }
+ else
+ {
+ int word_offset = (CGEN_INSN_WORD_ENDIAN (od) == CGEN_ENDIAN_BIG
+ ? start / CGEN_BASE_INSN_BITSIZE
+ : ...);
+ bufp += word_offset * (CGEN_BASE_INSN_BITSIZE / 8);
+ if (CGEN_INSN_WORD_ENDIAN (od) == CGEN_ENDIAN_BIG)
+ start -= word_offset * CGEN_BASE_INSN_BITSIZE;
+ else
+ }
+
+ /* Loop so we handle a field straddling an insn word boundary
+ (remember, "insn word boundary" is loosely defined here). */
+
+ while (length > 0)
+ {
+ int this_pass_length = length;
+ int this_pass_start = start;
+ int this_pass_word_length = min (insn_length_left,
+ (CGEN_BASE_INSN_BITSIZE == 8
+ ? 32
+ : CGEN_BASE_INSN_BITSIZE));
+
+ insert_1 (od, value, attrs,
+ this_pass_start, this_pass_length, this_pass_word_length,
+ bufp);
+
+ length -= this_pass_length;
+ insn_length_left -= this_pass_word_length;
+ if (???)
+ {
+ value >>= ???;
+ start += ???;
+ }
+ else
+ {
+ value >>= ???;
+ start += ???;
+ }
+ bufp += this_pass_word_length / 8;
+ }
+ }
+ else
+#endif /* 0 */
+ {
+ unsigned char *bufp = (unsigned char *) buffer;
+
+ if (length > 32)
+ abort ();
+
+ /* Adjust start,total_length,bufp to point to the pseudo-word that holds
+ the value. For example in a 48 bit insn where the value to insert
+ (say an immediate value) is the last 16 bits then word_length here
+ would be 16. To handle a 24 bit insn with an 18 bit immediate,
+ insert_1 handles 24 bits (using a combination of bfd_get8,16). */
+
+ if (total_length > 32)
+ {
+ int needed_width = start % 8 + length;
+ int fetch_length = (needed_width <= 8 ? 8
+ : needed_width <= 16 ? 16
+ : 32);
+
+ if (CGEN_INSN_LSB0_P)
+ {
+ if (CGEN_INSN_WORD_ENDIAN (od) == CGEN_ENDIAN_BIG)
+ {
+ abort (); /* wip */
+ }
+ else
+ {
+ int offset = start & ~7;
+
+ bufp += offset / 8;
+ start -= offset;
+ total_length -= offset;
+ }
+ }
+ else
+ {
+ if (CGEN_INSN_WORD_ENDIAN (od) == CGEN_ENDIAN_BIG)
+ {
+ int offset = start & ~7;
+
+ bufp += offset / 8;
+ start -= offset;
+ total_length -= offset;
+ }
+ else
+ {
+ abort (); /* wip */
+ }
+ }
+ }
+
+ insert_1 (od, value, start, length, total_length, bufp);
+ }
+
+#endif /* ! CGEN_INT_INSN_P */
+
+ return NULL;
+}