From aed80daedfb2895a386538f2e25bd6e00fb7935c Mon Sep 17 00:00:00 2001 From: "Frank Ch. Eigler" Date: Tue, 2 Jan 2001 16:34:07 +0000 Subject: * generalization 2001-01-02 Richard Sandiford * cgen-dis.c (hash_insn_array): Use bfd_put_bits(). (hash_insn_list): Likewise * cgen-ibld.in (insert_1): Use bfd_put_bits() and bfd_get_bits(). (extract_1): Use bfd_get_bits(). (extract_normal): Apply sign extension to both extraction methods. * cgen-opc.c (cgen_get_insn_value): Use bfd_get_bits() (cgen_put_insn_value): Use bfd_put_bits() --- opcodes/ChangeLog | 11 +++++ opcodes/cgen-dis.c | 50 ++++------------------ opcodes/cgen-ibld.in | 118 +++++++-------------------------------------------- opcodes/cgen-opc.c | 47 ++------------------ 4 files changed, 37 insertions(+), 189 deletions(-) diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog index 4eda874..a9a0645 100644 --- a/opcodes/ChangeLog +++ b/opcodes/ChangeLog @@ -1,3 +1,14 @@ +2001-01-02 Richard Sandiford + + * cgen-dis.c (hash_insn_array): Use bfd_put_bits(). + (hash_insn_list): Likewise + * cgen-ibld.in (insert_1): Use bfd_put_bits() and bfd_get_bits(). + (extract_1): Use bfd_get_bits(). + (extract_normal): Apply sign extension to both extraction + methods. + * cgen-opc.c (cgen_get_insn_value): Use bfd_get_bits() + (cgen_put_insn_value): Use bfd_put_bits() + 2000-12-28 Frank Ch. Eigler * cgen-asm.in (parse_insn_normal): Print better error message for diff --git a/opcodes/cgen-dis.c b/opcodes/cgen-dis.c index f8598f1..0856d8f 100644 --- a/opcodes/cgen-dis.c +++ b/opcodes/cgen-dis.c @@ -64,27 +64,10 @@ hash_insn_array (cd, insns, count, entsize, htable, hentbuf) to hash on, so set both up. */ value = CGEN_INSN_BASE_VALUE (insn); - switch (CGEN_INSN_MASK_BITSIZE (insn)) - { - case 8: - buf[0] = value; - break; - case 16: - if (big_p) - bfd_putb16 ((bfd_vma) value, buf); - else - bfd_putl16 ((bfd_vma) value, buf); - break; - case 32: - if (big_p) - bfd_putb32 ((bfd_vma) value, buf); - else - bfd_putl32 ((bfd_vma) value, buf); - break; - default: - abort (); - } - + bfd_put_bits ((bfd_vma) value, + buf, + CGEN_INSN_MASK_BITSIZE (insn), + big_p); hash = (* cd->dis_hash) (buf, value); hentbuf->next = htable[hash]; hentbuf->insn = insn; @@ -121,27 +104,10 @@ hash_insn_list (cd, insns, htable, hentbuf) to hash on, so set both up. */ value = CGEN_INSN_BASE_VALUE (ilist->insn); - switch (CGEN_INSN_MASK_BITSIZE (ilist->insn)) - { - case 8: - buf[0] = value; - break; - case 16: - if (big_p) - bfd_putb16 ((bfd_vma) value, buf); - else - bfd_putl16 ((bfd_vma) value, buf); - break; - case 32: - if (big_p) - bfd_putb32 ((bfd_vma) value, buf); - else - bfd_putl32 ((bfd_vma) value, buf); - break; - default: - abort (); - } - + bfd_put_bits((bfd_vma) value, + buf, + CGEN_INSN_MASK_BITSIZE (ilist->insn), + big_p); hash = (* cd->dis_hash) (buf, value); hentbuf->next = htable [hash]; hentbuf->insn = ilist->insn; diff --git a/opcodes/cgen-ibld.in b/opcodes/cgen-ibld.in index 5103293..f5107a1 100644 --- a/opcodes/cgen-ibld.in +++ b/opcodes/cgen-ibld.in @@ -78,34 +78,7 @@ insert_1 (cd, value, start, length, word_length, bufp) int shift; int big_p = CGEN_CPU_INSN_ENDIAN (cd) == 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 = (bufp[0] << 16) | bfd_getb16 (bufp + 1); - else - x = bfd_getl16 (bufp) | (bufp[2] << 16); - break; - case 32: - if (big_p) - x = bfd_getb32 (bufp); - else - x = bfd_getl32 (bufp); - break; - default : - abort (); - } + x = bfd_get_bits (bufp, word_length, big_p); /* Written this way to avoid undefined behaviour. */ mask = (((1L << (length - 1)) - 1) << 1) | 1; @@ -115,40 +88,7 @@ insert_1 (cd, value, start, length, word_length, bufp) 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) - { - bufp[0] = x >> 16; - bfd_putb16 (x, bufp + 1); - } - else - { - bfd_putl16 (x, bufp); - bufp[2] = x >> 16; - } - break; - case 32: - if (big_p) - bfd_putb32 (x, bufp); - else - bfd_putl32 (x, bufp); - break; - default : - abort (); - } + bfd_put_bits ((bfd_vma) x, bufp, word_length, big_p); } #endif /* ! CGEN_INT_INSN_P */ @@ -406,46 +346,17 @@ extract_1 (cd, ex_info, start, length, word_length, bufp, pc) unsigned char *bufp; bfd_vma pc; { - unsigned long x,mask; + unsigned long x; int shift; int big_p = CGEN_CPU_INSN_ENDIAN (cd) == 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 = (bufp[0] << 16) | bfd_getb16 (bufp + 1); - else - x = bfd_getl16 (bufp) | (bufp[2] << 16); - break; - case 32: - if (big_p) - x = bfd_getb32 (bufp); - else - x = bfd_getl32 (bufp); - break; - default : - abort (); - } + 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)); - return (x >> shift) & mask; + return x >> shift; } #endif /* ! CGEN_INT_INSN_P */ @@ -489,7 +400,7 @@ extract_normal (cd, ex_info, insn_value, attrs, word_offset, start, length, #endif long *valuep; { - CGEN_INSN_INT value; + 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. */ @@ -521,18 +432,10 @@ extract_normal (cd, ex_info, insn_value, attrs, word_offset, start, length, if (CGEN_INT_INSN_P || word_offset == 0) { - /* Written this way to avoid undefined behaviour. */ - CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1; - if (CGEN_INSN_LSB0_P) value = insn_value >> ((word_offset + start + 1) - length); else value = insn_value >> (total_length - ( word_offset + start + length)); - value &= mask; - /* sign extend? */ - if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED) - && (value & (1L << (length - 1)))) - value |= ~mask; } #if ! CGEN_INT_INSN_P @@ -552,6 +455,15 @@ extract_normal (cd, ex_info, insn_value, attrs, word_offset, start, length, #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; diff --git a/opcodes/cgen-opc.c b/opcodes/cgen-opc.c index 14936b3..1945f9b 100644 --- a/opcodes/cgen-opc.c +++ b/opcodes/cgen-opc.c @@ -374,30 +374,7 @@ cgen_get_insn_value (cd, buf, length) unsigned char *buf; int length; { - CGEN_INSN_INT value; - - switch (length) - { - case 8: - value = *buf; - break; - case 16: - if (cd->insn_endian == CGEN_ENDIAN_BIG) - value = bfd_getb16 (buf); - else - value = bfd_getl16 (buf); - break; - case 32: - if (cd->insn_endian == CGEN_ENDIAN_BIG) - value = bfd_getb32 (buf); - else - value = bfd_getl32 (buf); - break; - default: - abort (); - } - - return value; + bfd_get_bits (buf, length, cd->insn_endian == CGEN_ENDIAN_BIG); } /* Cover function to store an insn value properly byteswapped. */ @@ -409,26 +386,8 @@ cgen_put_insn_value (cd, buf, length, value) int length; CGEN_INSN_INT value; { - switch (length) - { - case 8: - buf[0] = value; - break; - case 16: - if (cd->insn_endian == CGEN_ENDIAN_BIG) - bfd_putb16 (value, buf); - else - bfd_putl16 (value, buf); - break; - case 32: - if (cd->insn_endian == CGEN_ENDIAN_BIG) - bfd_putb32 (value, buf); - else - bfd_putl32 (value, buf); - break; - default: - abort (); - } + bfd_put_bits ((bfd_vma) value, buf, length, + cd->insn_endian == CGEN_ENDIAN_BIG); } /* Look up instruction INSN_*_VALUE and extract its fields. -- cgit v1.1