X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=opcodes%2Fm32r-dis.c;h=40d7679907ebf01b807019ba0c2f72e04d56aa0f;hb=cadaa5224a27a03e954df59576f41d0f6b75a443;hp=455f8a38f126af9b8255bf3d996d4fcd619c4290;hpb=b3466c39bc29323e1912f5fa17c70e63af56e001;p=deliverable%2Fbinutils-gdb.git diff --git a/opcodes/m32r-dis.c b/opcodes/m32r-dis.c index 455f8a38f1..40d7679907 100644 --- a/opcodes/m32r-dis.c +++ b/opcodes/m32r-dis.c @@ -4,7 +4,7 @@ THIS FILE IS MACHINE GENERATED WITH CGEN. - the resultant file is machine generated, cgen-dis.in isn't -Copyright (C) 1996, 1997, 1998, 1999, 2001 Free Software Foundation, Inc. +Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. This file is part of the GNU Binutils and GDB, the GNU debugger. @@ -47,39 +47,46 @@ static void print_keyword static void print_insn_normal PARAMS ((CGEN_CPU_DESC, PTR, const CGEN_INSN *, CGEN_FIELDS *, bfd_vma, int)); -static int print_insn PARAMS ((CGEN_CPU_DESC, bfd_vma, - disassemble_info *, char *, int)); +static int print_insn + PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *, char *, unsigned)); static int default_print_insn PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *)); +static int read_insn + PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *, char *, int, + CGEN_EXTRACT_INFO *, unsigned long *)); /* -- disassembler routines inserted here */ /* -- dis.c */ +static void print_hash PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int)); +static int my_print_insn PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *)); /* 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) +#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; + CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; PTR dis_info; - long value; - unsigned int attrs; - bfd_vma pc; - int length; + long value ATTRIBUTE_UNUSED; + unsigned int attrs ATTRIBUTE_UNUSED; + bfd_vma pc ATTRIBUTE_UNUSED; + int length ATTRIBUTE_UNUSED; { disassemble_info *info = (disassemble_info *) dis_info; (*info->fprintf_func) (info->stream, "#"); } -#undef CGEN_PRINT_INSN +#undef CGEN_PRINT_INSN #define CGEN_PRINT_INSN my_print_insn static int @@ -134,6 +141,10 @@ my_print_insn (cd, pc, info) /* -- */ +void m32r_cgen_print_operand + PARAMS ((CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, + void const *, bfd_vma, int)); + /* Main entry point for printing operands. XINFO is a `void *' and not a `disassemble_info *' to not put a requirement of dis-asm.h on cgen.h. @@ -147,8 +158,7 @@ my_print_insn (cd, pc, info) This function could be moved into `print_insn_normal', but keeping it separate makes clear the interface between `print_insn_normal' and each of - the handlers. -*/ + the handlers. */ void m32r_cgen_print_operand (cd, opindex, xinfo, fields, attrs, pc, length) @@ -156,7 +166,7 @@ m32r_cgen_print_operand (cd, opindex, xinfo, fields, attrs, pc, length) int opindex; PTR xinfo; CGEN_FIELDS *fields; - void const *attrs; + void const *attrs ATTRIBUTE_UNUSED; bfd_vma pc; int length; { @@ -263,21 +273,12 @@ m32r_cgen_init_dis (cd) static void print_normal (cd, dis_info, value, attrs, pc, length) -#ifdef CGEN_PRINT_NORMAL - CGEN_CPU_DESC cd; -#else CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; -#endif PTR dis_info; long value; unsigned int attrs; -#ifdef CGEN_PRINT_NORMAL - bfd_vma pc; - int length; -#else bfd_vma pc ATTRIBUTE_UNUSED; int length ATTRIBUTE_UNUSED; -#endif { disassemble_info *info = (disassemble_info *) dis_info; @@ -298,21 +299,12 @@ print_normal (cd, dis_info, value, attrs, pc, length) static void print_address (cd, dis_info, value, attrs, pc, length) -#ifdef CGEN_PRINT_NORMAL - CGEN_CPU_DESC cd; -#else CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; -#endif PTR dis_info; bfd_vma value; unsigned int attrs; -#ifdef CGEN_PRINT_NORMAL - bfd_vma pc; - int length; -#else bfd_vma pc ATTRIBUTE_UNUSED; int length ATTRIBUTE_UNUSED; -#endif { disassemble_info *info = (disassemble_info *) dis_info; @@ -395,9 +387,10 @@ print_insn_normal (cd, dis_info, insn, fields, pc, length) /* Subroutine of print_insn. Reads an insn into the given buffers and updates the extract info. Returns 0 if all is well, non-zero otherwise. */ + static int read_insn (cd, pc, info, buf, buflen, ex_info, insn_value) - CGEN_CPU_DESC cd; + CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; bfd_vma pc; disassemble_info *info; char *buf; @@ -432,15 +425,25 @@ print_insn (cd, pc, info, buf, buflen) bfd_vma pc; disassemble_info *info; char *buf; - int buflen; + unsigned int buflen; { - unsigned long insn_value; + CGEN_INSN_INT insn_value; const CGEN_INSN_LIST *insn_list; CGEN_EXTRACT_INFO ex_info; + int basesize; + + /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */ + basesize = cd->base_insn_bitsize < buflen * 8 ? + cd->base_insn_bitsize : buflen * 8; + insn_value = cgen_get_insn_value (cd, buf, basesize); - int rc = read_insn (cd, pc, info, buf, buflen, & ex_info, & insn_value); - if (rc != 0) - return rc; + + /* Fill in ex_info fields like read_insn would. Don't actually call + read_insn, since the incoming buffer is already read (and possibly + modified a la m32r). */ + ex_info.valid = (1 << buflen) - 1; + ex_info.dis_info = info; + ex_info.insn_bytes = buf; /* The instructions are stored in hash lists. Pick the first one and keep trying until we find the right one. */ @@ -451,9 +454,10 @@ print_insn (cd, pc, info, buf, buflen) const CGEN_INSN *insn = insn_list->insn; CGEN_FIELDS fields; int length; + unsigned long insn_value_cropped; #ifdef CGEN_VALIDATE_INSN_SUPPORTED - /* not needed as insn shouldn't be in hash lists if not supported */ + /* Not needed as insn shouldn't be in hash lists if not supported. */ /* Supported by this cpu? */ if (! m32r_cgen_insn_supported (cd, insn)) { @@ -465,7 +469,17 @@ print_insn (cd, pc, info, buf, buflen) /* Basic bit mask must be correct. */ /* ??? May wish to allow target to defer this check until the extract handler. */ - if ((insn_value & CGEN_INSN_BASE_MASK (insn)) + + /* Base size may exceed this instruction's size. Extract the + relevant part from the buffer. */ + if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen && + (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long)) + insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn), + info->endian == BFD_ENDIAN_BIG); + else + insn_value_cropped = insn_value; + + if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn)) == CGEN_INSN_BASE_VALUE (insn)) { /* Printing is handled in two passes. The first pass parses the @@ -474,8 +488,8 @@ print_insn (cd, pc, info, buf, buflen) /* Make sure the entire insn is loaded into insn_value, if it can fit. */ - if (CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize && - (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long)) + if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) && + (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long)) { unsigned long full_insn_value; int rc = read_insn (cd, pc, info, buf, @@ -488,7 +502,7 @@ print_insn (cd, pc, info, buf, buflen) } else length = CGEN_EXTRACT_FN (cd, insn) - (cd, insn, &ex_info, insn_value, &fields, pc); + (cd, insn, &ex_info, insn_value_cropped, &fields, pc); /* length < 0 -> error */ if (length < 0) @@ -522,18 +536,27 @@ default_print_insn (cd, pc, info) disassemble_info *info; { char buf[CGEN_MAX_INSN_SIZE]; + int buflen; int status; - /* Read the base part of the insn. */ + /* Attempt to read the base part of the insn. */ + buflen = cd->base_insn_bitsize / 8; + status = (*info->read_memory_func) (pc, buf, buflen, info); + + /* Try again with the minimum part, if min < base. */ + if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize)) + { + buflen = cd->min_insn_bitsize / 8; + status = (*info->read_memory_func) (pc, buf, buflen, info); + } - status = (*info->read_memory_func) (pc, buf, cd->base_insn_bitsize / 8, info); if (status != 0) { (*info->memory_error_func) (status, pc, info); return -1; } - return print_insn (cd, pc, info, buf, cd->base_insn_bitsize / 8); + return print_insn (cd, pc, info, buf, buflen); } /* Main entry point. @@ -563,17 +586,21 @@ print_insn_m32r (pc, info) arch = info->arch; if (arch == bfd_arch_unknown) arch = CGEN_BFD_ARCH; - - /* There's no standard way to compute the isa number (e.g. for arm thumb) + + /* There's no standard way to compute the machine or isa number so we leave it to the target. */ +#ifdef CGEN_COMPUTE_MACH + mach = CGEN_COMPUTE_MACH (info); +#else + mach = info->mach; +#endif + #ifdef CGEN_COMPUTE_ISA isa = CGEN_COMPUTE_ISA (info); #else isa = 0; #endif - mach = info->mach; - /* If we've switched cpu's, close the current table and open a new one. */ if (cd && (isa != prev_isa