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Diffstat (limited to 'gnu/usr.bin/binutils/opcodes/cgen-ibld.in')
-rw-r--r--gnu/usr.bin/binutils/opcodes/cgen-ibld.in514
1 files changed, 514 insertions, 0 deletions
diff --git a/gnu/usr.bin/binutils/opcodes/cgen-ibld.in b/gnu/usr.bin/binutils/opcodes/cgen-ibld.in
new file mode 100644
index 00000000000..6921a53dac9
--- /dev/null
+++ b/gnu/usr.bin/binutils/opcodes/cgen-ibld.in
@@ -0,0 +1,514 @@
+/* Instruction building/extraction support for @arch@. -*- C -*-
+
+THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator.
+- the resultant file is machine generated, cgen-ibld.in isn't
+
+Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+
+This file is part of the GNU Binutils and GDB, the GNU debugger.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software Foundation, Inc.,
+59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+/* ??? Eventually more and more of this stuff can go to cpu-independent files.
+ Keep that in mind. */
+
+#include "sysdep.h"
+#include <ctype.h>
+#include <stdio.h>
+#include "ansidecl.h"
+#include "dis-asm.h"
+#include "bfd.h"
+#include "symcat.h"
+#include "@prefix@-desc.h"
+#include "@prefix@-opc.h"
+#include "opintl.h"
+
+#undef min
+#define min(a,b) ((a) < (b) ? (a) : (b))
+#undef max
+#define max(a,b) ((a) > (b) ? (a) : (b))
+
+/* Used by the ifield rtx function. */
+#define FLD(f) (fields->f)
+
+static const char * insert_normal
+ PARAMS ((CGEN_CPU_DESC, long, unsigned int, unsigned int, unsigned int,
+ unsigned int, unsigned int, unsigned int, CGEN_INSN_BYTES_PTR));
+static const char * insert_insn_normal
+ PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *,
+ CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma));
+
+static int extract_normal
+ PARAMS ((CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_INT,
+ unsigned int, unsigned int, unsigned int, unsigned int,
+ unsigned int, unsigned int, bfd_vma, long *));
+static int extract_insn_normal
+ PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *,
+ CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma));
+static void put_insn_int_value
+ PARAMS ((CGEN_CPU_DESC, CGEN_INSN_BYTES_PTR, int, int, CGEN_INSN_INT));
+
+
+/* Operand insertion. */
+
+#if ! CGEN_INT_INSN_P
+
+/* Subroutine of insert_normal. */
+
+static CGEN_INLINE void
+insert_1 (cd, value, start, length, word_length, bufp)
+ CGEN_CPU_DESC cd;
+ unsigned long value;
+ int start,length,word_length;
+ unsigned char *bufp;
+{
+ unsigned long x,mask;
+ int shift;
+ int big_p = CGEN_CPU_INSN_ENDIAN (cd) == CGEN_ENDIAN_BIG;
+
+ x = bfd_get_bits (bufp, word_length, big_p);
+
+ /* Written this way to avoid undefined behaviour. */
+ mask = (((1L << (length - 1)) - 1) << 1) | 1;
+ if (CGEN_INSN_LSB0_P)
+ shift = (start + 1) - length;
+ else
+ shift = (word_length - (start + length));
+ x = (x & ~(mask << shift)) | ((value & mask) << shift);
+
+ bfd_put_bits ((bfd_vma) x, bufp, word_length, big_p);
+}
+
+#endif /* ! CGEN_INT_INSN_P */
+
+/* Default insertion routine.
+
+ ATTRS is a mask of the boolean attributes.
+ WORD_OFFSET is the offset in bits from the start of the insn of the value.
+ WORD_LENGTH is the length of the word in bits in which the value resides.
+ START is the starting bit number in the word, architecture origin.
+ LENGTH is the length of VALUE in bits.
+ TOTAL_LENGTH is the total length of the insn in bits.
+
+ The result is an error message or NULL if success. */
+
+/* ??? This duplicates functionality with bfd's howto table and
+ bfd_install_relocation. */
+/* ??? This doesn't handle bfd_vma's. Create another function when
+ necessary. */
+
+static const char *
+insert_normal (cd, value, attrs, word_offset, start, length, word_length,
+ total_length, buffer)
+ CGEN_CPU_DESC cd;
+ long value;
+ unsigned int attrs;
+ unsigned int word_offset, start, length, word_length, 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;
+
+#if 0
+ if (CGEN_INT_INSN_P
+ && word_offset != 0)
+ abort ();
+#endif
+
+ if (word_length > 32)
+ abort ();
+
+ /* For architectures with insns smaller than the base-insn-bitsize,
+ word_length may be too big. */
+ if (cd->min_insn_bitsize < cd->base_insn_bitsize)
+ {
+ if (word_offset == 0
+ && word_length > total_length)
+ word_length = total_length;
+ }
+
+ /* Ensure VALUE will fit. */
+ if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED))
+ {
+ 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
+ {
+ if (! cgen_signed_overflow_ok_p (cd))
+ {
+ 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
+
+ {
+ int shift;
+
+ if (CGEN_INSN_LSB0_P)
+ shift = (word_offset + start + 1) - length;
+ else
+ shift = total_length - (word_offset + start + length);
+ *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift);
+ }
+
+#else /* ! CGEN_INT_INSN_P */
+
+ {
+ unsigned char *bufp = (unsigned char *) buffer + word_offset / 8;
+
+ insert_1 (cd, value, start, length, word_length, bufp);
+ }
+
+#endif /* ! CGEN_INT_INSN_P */
+
+ return NULL;
+}
+
+/* Default insn builder (insert handler).
+ The instruction is recorded in CGEN_INT_INSN_P byte order
+ (meaning that if CGEN_INT_INSN_P BUFFER is an int * and thus the value is
+ recorded in host byte order, otherwise BUFFER is an array of bytes and the
+ value is recorded in target byte order).
+ The result is an error message or NULL if success. */
+
+static const char *
+insert_insn_normal (cd, insn, fields, buffer, pc)
+ CGEN_CPU_DESC cd;
+ const CGEN_INSN * insn;
+ CGEN_FIELDS * fields;
+ CGEN_INSN_BYTES_PTR buffer;
+ bfd_vma pc;
+{
+ const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
+ unsigned long value;
+ const CGEN_SYNTAX_CHAR_TYPE * syn;
+
+ CGEN_INIT_INSERT (cd);
+ value = CGEN_INSN_BASE_VALUE (insn);
+
+ /* If we're recording insns as numbers (rather than a string of bytes),
+ target byte order handling is deferred until later. */
+
+#if CGEN_INT_INSN_P
+
+ put_insn_int_value (cd, buffer, cd->base_insn_bitsize,
+ CGEN_FIELDS_BITSIZE (fields), value);
+
+#else
+
+ cgen_put_insn_value (cd, buffer, min (cd->base_insn_bitsize,
+ CGEN_FIELDS_BITSIZE (fields)),
+ value);
+
+#endif /* ! CGEN_INT_INSN_P */
+
+ /* ??? It would be better to scan the format's fields.
+ Still need to be able to insert a value based on the operand though;
+ e.g. storing a branch displacement that got resolved later.
+ Needs more thought first. */
+
+ for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn)
+ {
+ const char *errmsg;
+
+ if (CGEN_SYNTAX_CHAR_P (* syn))
+ continue;
+
+ errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
+ fields, buffer, pc);
+ if (errmsg)
+ return errmsg;
+ }
+
+ return NULL;
+}
+
+/* Cover function to store an insn value into an integral insn. Must go here
+ because it needs <prefix>-desc.h for CGEN_INT_INSN_P. */
+
+static void
+put_insn_int_value (cd, buf, length, insn_length, value)
+ CGEN_CPU_DESC cd;
+ CGEN_INSN_BYTES_PTR buf;
+ int length;
+ int insn_length;
+ CGEN_INSN_INT value;
+{
+ /* For architectures with insns smaller than the base-insn-bitsize,
+ length may be too big. */
+ if (length > insn_length)
+ *buf = value;
+ else
+ {
+ int shift = insn_length - length;
+ /* Written this way to avoid undefined behaviour. */
+ CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1;
+ *buf = (*buf & ~(mask << shift)) | ((value & mask) << shift);
+ }
+}
+
+/* Operand extraction. */
+
+#if ! CGEN_INT_INSN_P
+
+/* Subroutine of extract_normal.
+ Ensure sufficient bytes are cached in EX_INFO.
+ OFFSET is the offset in bytes from the start of the insn of the value.
+ BYTES is the length of the needed value.
+ Returns 1 for success, 0 for failure. */
+
+static CGEN_INLINE int
+fill_cache (cd, ex_info, offset, bytes, pc)
+ CGEN_CPU_DESC cd;
+ CGEN_EXTRACT_INFO *ex_info;
+ int offset, bytes;
+ bfd_vma pc;
+{
+ /* It's doubtful that the middle part has already been fetched so
+ we don't optimize that case. kiss. */
+ int mask;
+ disassemble_info *info = (disassemble_info *) ex_info->dis_info;
+
+ /* First do a quick check. */
+ mask = (1 << bytes) - 1;
+ if (((ex_info->valid >> offset) & mask) == mask)
+ return 1;
+
+ /* Search for the first byte we need to read. */
+ for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1)
+ if (! (mask & ex_info->valid))
+ break;
+
+ if (bytes)
+ {
+ int status;
+
+ pc += offset;
+ status = (*info->read_memory_func)
+ (pc, ex_info->insn_bytes + offset, bytes, info);
+
+ if (status != 0)
+ {
+ (*info->memory_error_func) (status, pc, info);
+ return 0;
+ }
+
+ ex_info->valid |= ((1 << bytes) - 1) << offset;
+ }
+
+ return 1;
+}
+
+/* Subroutine of extract_normal. */
+
+static CGEN_INLINE long
+extract_1 (cd, ex_info, start, length, word_length, bufp, pc)
+ CGEN_CPU_DESC cd;
+ CGEN_EXTRACT_INFO *ex_info;
+ int start,length,word_length;
+ unsigned char *bufp;
+ bfd_vma pc;
+{
+ unsigned long x;
+ int shift;
+ int big_p = CGEN_CPU_INSN_ENDIAN (cd) == CGEN_ENDIAN_BIG;
+
+ x = bfd_get_bits (bufp, word_length, big_p);
+
+ if (CGEN_INSN_LSB0_P)
+ shift = (start + 1) - length;
+ else
+ shift = (word_length - (start + length));
+ return x >> shift;
+}
+
+#endif /* ! CGEN_INT_INSN_P */
+
+/* Default extraction routine.
+
+ INSN_VALUE is the first base_insn_bitsize bits of the insn in host order,
+ or sometimes less for cases like the m32r where the base insn size is 32
+ but some insns are 16 bits.
+ ATTRS is a mask of the boolean attributes. We only need `SIGNED',
+ but for generality we take a bitmask of all of them.
+ WORD_OFFSET is the offset in bits from the start of the insn of the value.
+ WORD_LENGTH is the length of the word in bits in which the value resides.
+ START is the starting bit number in the word, architecture origin.
+ LENGTH is the length of VALUE in bits.
+ TOTAL_LENGTH is the total length of the insn in bits.
+
+ Returns 1 for success, 0 for failure. */
+
+/* ??? The return code isn't properly used. wip. */
+
+/* ??? This doesn't handle bfd_vma's. Create another function when
+ necessary. */
+
+static int
+extract_normal (cd, ex_info, insn_value, attrs, word_offset, start, length,
+ word_length, total_length, pc, valuep)
+ CGEN_CPU_DESC cd;
+#if ! CGEN_INT_INSN_P
+ CGEN_EXTRACT_INFO *ex_info;
+#else
+ CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED;
+#endif
+ CGEN_INSN_INT insn_value;
+ unsigned int attrs;
+ unsigned int word_offset, start, length, word_length, total_length;
+#if ! CGEN_INT_INSN_P
+ bfd_vma pc;
+#else
+ bfd_vma pc ATTRIBUTE_UNUSED;
+#endif
+ long *valuep;
+{
+ CGEN_INSN_INT value, mask;
+
+ /* If LENGTH is zero, this operand doesn't contribute to the value
+ so give it a standard value of zero. */
+ if (length == 0)
+ {
+ *valuep = 0;
+ return 1;
+ }
+
+#if 0
+ if (CGEN_INT_INSN_P
+ && word_offset != 0)
+ abort ();
+#endif
+
+ if (word_length > 32)
+ abort ();
+
+ /* For architectures with insns smaller than the insn-base-bitsize,
+ word_length may be too big. */
+ if (cd->min_insn_bitsize < cd->base_insn_bitsize)
+ {
+ if (word_offset == 0
+ && word_length > total_length)
+ word_length = total_length;
+ }
+
+ /* Does the value reside in INSN_VALUE? */
+
+ if (CGEN_INT_INSN_P || word_offset == 0)
+ {
+ if (CGEN_INSN_LSB0_P)
+ value = insn_value >> ((word_offset + start + 1) - length);
+ else
+ value = insn_value >> (total_length - ( word_offset + start + length));
+ }
+
+#if ! CGEN_INT_INSN_P
+
+ else
+ {
+ unsigned char *bufp = ex_info->insn_bytes + word_offset / 8;
+
+ if (word_length > 32)
+ abort ();
+
+ if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0)
+ return 0;
+
+ value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc);
+ }
+
+#endif /* ! CGEN_INT_INSN_P */
+
+ /* Written this way to avoid undefined behaviour. */
+ mask = (((1L << (length - 1)) - 1) << 1) | 1;
+
+ value &= mask;
+ /* sign extend? */
+ if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)
+ && (value & (1L << (length - 1))))
+ value |= ~mask;
+
+ *valuep = value;
+
+ return 1;
+}
+
+/* Default insn extractor.
+
+ INSN_VALUE is the first base_insn_bitsize bits, translated to host order.
+ The extracted fields are stored in FIELDS.
+ EX_INFO is used to handle reading variable length insns.
+ Return the length of the insn in bits, or 0 if no match,
+ or -1 if an error occurs fetching data (memory_error_func will have
+ been called). */
+
+static int
+extract_insn_normal (cd, insn, ex_info, insn_value, fields, pc)
+ CGEN_CPU_DESC cd;
+ const CGEN_INSN *insn;
+ CGEN_EXTRACT_INFO *ex_info;
+ CGEN_INSN_INT insn_value;
+ CGEN_FIELDS *fields;
+ bfd_vma pc;
+{
+ const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
+ const CGEN_SYNTAX_CHAR_TYPE *syn;
+
+ CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
+
+ CGEN_INIT_EXTRACT (cd);
+
+ for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
+ {
+ int length;
+
+ if (CGEN_SYNTAX_CHAR_P (*syn))
+ continue;
+
+ length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
+ ex_info, insn_value, fields, pc);
+ if (length <= 0)
+ return length;
+ }
+
+ /* We recognized and successfully extracted this insn. */
+ return CGEN_INSN_BITSIZE (insn);
+}
+
+/* machine generated code added here */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-15 01:04:31 +0000