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-rw-r--r--gas/config/h8300.mt4
-rw-r--r--gas/config/obj-ieee.c537
-rw-r--r--gas/config/obj-ieee.h25
-rw-r--r--gas/config/tc-h8300.c662
4 files changed, 1228 insertions, 0 deletions
diff --git a/gas/config/h8300.mt b/gas/config/h8300.mt
new file mode 100644
index 0000000..1e6eb3c
--- /dev/null
+++ b/gas/config/h8300.mt
@@ -0,0 +1,4 @@
+TARG_CPU_DEPENDENTS=$(srcdir)/../include/h8300-opcode.h
+LOCAL_LOADLIBES=$(srcdir)/../bfd/$(srcdir)/libbfd.a
+TDEFINES=-DBFD -DMANY_SEGMENTS
+
diff --git a/gas/config/obj-ieee.c b/gas/config/obj-ieee.c
new file mode 100644
index 0000000..4530224
--- /dev/null
+++ b/gas/config/obj-ieee.c
@@ -0,0 +1,537 @@
+/* obj-format for ieee-695 records.
+ Copyright (C) 1991 Free Software Foundation, Inc.
+
+This file is part of GAS, the GNU Assembler.
+
+GAS 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.
+
+GAS 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 GAS; see the file COPYING. If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+
+/*
+ created by
+
+ steve chamberlain steve@cygnus.com
+*/
+
+/*
+ this will hopefully become the port through which bfd and gas talk,
+ for the moment, only ieee is known to work well.
+*/
+
+#include "bfd.h"
+#include "as.h"
+#include "subsegs.h"
+#include "output-file.h"
+#include "frags.h"
+
+bfd *abfd;
+
+/* How many addresses does the .align take? */
+static relax_addressT relax_align(address, alignment)
+register relax_addressT address; /* Address now. */
+register long alignment; /* Alignment (binary). */
+{
+ relax_addressT mask;
+ relax_addressT new_address;
+
+ mask = ~ ( (~0) << alignment );
+ new_address = (address + mask) & (~ mask);
+ return (new_address - address);
+} /* relax_align() */
+
+/* calculate the size of the frag chain and create a bfd section
+ to contain all of it */
+static void DEFUN(size_section,(abfd, idx),
+ bfd *abfd AND
+ unsigned int idx)
+{
+ asection *sec;
+ unsigned int size = 0;
+ fragS *frag = segment_info[idx].frag_root;
+ while (frag) {
+ if (frag->fr_address != size) {
+ printf("Out of step\n");
+ size = frag->fr_address;
+ }
+ size += frag->fr_fix;
+ switch (frag->fr_type) {
+ case rs_fill:
+ case rs_org:
+ size += frag->fr_offset * frag->fr_var;
+ break;
+ case rs_align:
+ size += relax_align(size, frag->fr_offset);
+ }
+ frag = frag->fr_next;
+ }
+ if (size) {
+ char *name = segment_info[idx].name;
+ if (name == (char *)NULL) {
+ name = ".data";
+ }
+ segment_info[idx].user_stuff = (char *)(sec = bfd_make_section(abfd, name));
+ /* Make it output through itself */
+ sec->output_section = sec;
+ sec->flags |= SEC_HAS_CONTENTS;
+ bfd_set_section_size(abfd, sec, size);
+ }
+}
+
+/* run through a frag chain and write out the data to go with it */
+static void DEFUN(fill_section,(abfd, idx),
+ bfd *abfd AND
+ unsigned int idx)
+{
+ asection *sec = segment_info[idx].user_stuff;
+ if (sec) {
+ fragS *frag = segment_info[idx].frag_root;
+ unsigned int offset = 0;
+ while (frag) {
+ unsigned int fill_size;
+ unsigned int count;
+ switch (frag->fr_type) {
+ case rs_fill:
+ case rs_align:
+ case rs_org:
+ if(frag->fr_fix)
+ {
+ bfd_set_section_contents(abfd,
+ sec,
+ frag->fr_literal,
+ frag->fr_address,
+ frag->fr_fix);
+ }
+ offset += frag->fr_fix;
+ fill_size = frag->fr_var;
+ if (fill_size)
+ {
+ unsigned int off = frag->fr_fix;
+ for (count = frag->fr_offset; count; count--)
+ {
+ bfd_set_section_contents(abfd, sec,
+ frag->fr_literal +
+ frag->fr_fix,
+ frag->fr_address + off,
+ fill_size);
+ off += fill_size;
+ }
+ }
+ break;
+ default:
+ abort();
+ }
+ frag = frag->fr_next;
+ }
+ }
+}
+
+/* Count the relocations in a chain */
+
+static unsigned int DEFUN(count_entries_in_chain,(idx),
+ unsigned int idx)
+{
+ unsigned int nrelocs;
+ fixS *fixup_ptr;
+
+ /* Count the relocations */
+ fixup_ptr = segment_info[idx].fix_root;
+ nrelocs = 0;
+ while (fixup_ptr != (fixS *)NULL)
+ {
+ fixup_ptr = fixup_ptr->fx_next;
+ nrelocs ++ ;
+ }
+ return nrelocs;
+}
+
+/* output all the relocations for a section */
+void DEFUN(do_relocs_for,(idx),
+ unsigned int idx)
+{
+ unsigned int nrelocs;
+ arelent **reloc_ptr_vector;
+ arelent *reloc_vector;
+ asymbol **ptrs;
+ asection *section = (asection *)(segment_info[idx].user_stuff);
+ unsigned int i;
+ fixS *from;
+ if (section) {
+ nrelocs = count_entries_in_chain(idx);
+
+ reloc_ptr_vector = (arelent**)malloc((nrelocs+1) * sizeof(arelent *));
+ reloc_vector = (arelent*)malloc(nrelocs * sizeof(arelent));
+ ptrs = (asymbol **)malloc(nrelocs * sizeof(asymbol *));
+ from = segment_info[idx].fix_root;
+ for (i = 0; i < nrelocs; i++)
+ {
+ arelent *to = reloc_vector + i;
+ asymbol *s ;
+ reloc_ptr_vector[i] = to;
+ to->howto = (reloc_howto_type *)(from->fx_r_type);
+
+ /* We can't represent complicated things in a reloc yet */
+ /* if (from->fx_addsy == 0 ||
+ from->fx_subsy != 0) abort();
+ */
+ s = &( from->fx_addsy->sy_symbol.sy);
+ to->address = ((char *)( from->fx_frag->fr_address +
+ from->fx_where))
+ - ((char *)(&(from->fx_frag->fr_literal)));
+ to->addend = from->fx_offset ;
+ /* If we know the symbol which we want to relocate to, turn this
+ reloaction into a section relative.
+
+ If this relocation is pcrelative, and we know the
+ destination, we still want to keep the relocation - since
+ the linker might relax some of the bytes, but it stops
+ being pc relative and turns into an absolute relocation.
+
+ */
+ if (s) {
+ if ((s->flags & BSF_UNDEFINED)==0) {
+ to->section = s->section;
+ to->addend = s->value ;
+ to->sym_ptr_ptr = 0;
+ if (to->howto->pcrel_offset) {
+ /* This is a pcrel relocation, the addend should be adjusted */
+ to->addend -= to->address +1;
+ }
+ }
+ else {
+ to->section = 0;
+ *ptrs = &(from->fx_addsy->sy_symbol.sy);
+ to->sym_ptr_ptr = ptrs;
+
+ if (to->howto->pcrel_offset) {
+ /* This is a pcrel relocation, the addend should be adjusted */
+ to->addend -= to->address -1;
+ }
+ }
+
+ }
+ else {
+ to->section = 0;
+ }
+
+ ptrs++;
+ from = from->fx_next;
+ }
+
+ /* attatch to the section */
+ section->orelocation = reloc_ptr_vector;
+ section->reloc_count = nrelocs;
+ section->flags |= SEC_LOAD;
+ }
+}
+
+/* do the symbols.. */
+static void DEFUN(do_symbols, (abfd),
+ bfd *abfd)
+{
+ extern symbolS *symbol_rootP;
+ symbolS *ptr;
+ asymbol **symbol_ptr_vec;
+ asymbol *symbol_vec;
+ unsigned int count = 0;
+ unsigned int index;
+
+
+ for (ptr = symbol_rootP;
+ ptr != (symbolS *)NULL;
+ ptr = ptr->sy_next)
+ {
+ if (SEG_NORMAL(ptr->sy_symbol.seg))
+ {
+ ptr->sy_symbol.sy.section =
+ (asection *)(segment_info[ptr->sy_symbol.seg].user_stuff);
+ ptr->sy_symbol.sy.value += ptr->sy_frag->fr_address;
+ if (ptr->sy_symbol.sy.flags == 0) {
+ ptr->sy_symbol.sy.flags = BSF_LOCAL ;
+ }
+ }
+ else {
+ switch (ptr->sy_symbol.seg) {
+ case SEG_ABSOLUTE:
+ ptr->sy_symbol.sy.flags |= BSF_ABSOLUTE;
+ ptr->sy_symbol.sy.section = 0;
+ break;
+ case SEG_UNKNOWN:
+ ptr->sy_symbol.sy.flags = BSF_UNDEFINED ;
+ ptr->sy_symbol.sy.section = 0;
+ break;
+ default:
+ abort();
+ }
+ count++;
+ }
+ }
+ symbol_ptr_vec = (asymbol **)malloc((count+1) * sizeof(asymbol *));
+
+ index = 0;
+ for (ptr = symbol_rootP;
+ ptr != (symbolS *)NULL;
+ ptr = ptr->sy_next)
+ {
+ symbol_ptr_vec[index] = &(ptr->sy_symbol.sy);
+ index++;
+ }
+ symbol_ptr_vec[index] =0;
+ abfd->outsymbols = symbol_ptr_vec;
+ abfd->symcount = count;
+}
+
+/* The generic as->bfd converter. Other backends may have special case
+ code */
+
+void DEFUN_VOID(bfd_as_write_hook)
+{
+ int i;
+
+ for (i = SEG_E0; i < SEG_UNKNOWN; i++) {
+ size_section(abfd, i);
+ }
+
+
+ for (i = SEG_E0; i < SEG_UNKNOWN; i++)
+ fill_section(abfd,i);
+
+ do_symbols(abfd);
+
+ for (i = SEG_E0; i < SEG_UNKNOWN; i++)
+ do_relocs_for(i);
+
+}
+
+
+
+S_GET_VALUE(x)
+symbolS *x;
+{
+ return x->sy_symbol.sy.value;
+}
+
+S_SET_SEGMENT(x,y)
+symbolS *x ;
+int y;
+{
+ x->sy_symbol.seg = y;
+}
+
+S_IS_DEFINED(x)
+symbolS *x;
+{
+ if (SEG_NORMAL(x->sy_symbol.seg))
+ {
+ return 1;
+ }
+ switch (x->sy_symbol.seg)
+ {
+ case SEG_UNKNOWN:
+ return 0;
+ default:
+ abort();
+ }
+}
+
+S_IS_EXTERNAL(x) { abort(); }
+S_GET_DESC(x) { abort() ; }
+
+S_GET_SEGMENT(x)
+symbolS *x;
+ { return x->sy_symbol.seg; }
+
+S_SET_EXTERNAL(x)
+symbolS *x;
+{
+x->sy_symbol.sy.flags |= BSF_GLOBAL | BSF_EXPORT;
+}
+
+S_SET_NAME(x,y)
+symbolS*x;
+char *y; {
+x->sy_symbol.sy.name = y; }
+
+S_SET_VALUE(s,v)
+symbolS *s;
+long v;
+{
+ s->sy_symbol.sy.value = v;
+}
+
+S_GET_OTHER(x) { abort() ;}
+S_IS_DEBUG(x) { abort(); }
+
+char *segment_name() { abort(); }
+
+void obj_read_begin_hook() { }
+
+static void obj_ieee_section(ignore)
+int ignore;
+{
+ extern char *input_line_pointer;
+ extern char is_end_of_line[];
+ char *p= input_line_pointer;
+ char *s = p;
+ int i;
+ /* Look up the name, if it doesn't exist, make it */
+ while (*p &&* p != ' ' && *p != ',' && !is_end_of_line[*p]) {
+ p++;
+ }
+ for (i = SEG_E0; i < SEG_UNKNOWN; i++) {
+ if (segment_info[i].hadone){
+ if (strncmp(segment_info[i].name, s, p-s) ==0) {
+ goto ok;
+
+ }
+ }
+ else break;
+ }
+ if (i == SEG_UNKNOWN) {
+ as_bad("too many sections");
+ return;
+ }
+
+ segment_info[i].hadone = 1;
+ segment_info[i].name = malloc(p-s + 1);
+ memcpy(segment_info[i].name, s, p-s);
+ segment_info[i].name[p-s] = 0;
+ ok:
+ subseg_new(i,0);
+ while (!is_end_of_line[*p])
+ p++;
+ input_line_pointer = p;
+
+}
+
+
+void cons();
+void s_ignore();
+
+
+/*
+ * stringer()
+ *
+ * We read 0 or more ',' seperated, double-quoted strings.
+ *
+ * Caller should have checked need_pass_2 is FALSE because we don't check it.
+ */
+
+void stringer();
+void s_globl();
+const pseudo_typeS obj_pseudo_table[] =
+{
+ {"section", obj_ieee_section, 0},
+ {"data.b", cons, 1},
+ {"data.w", cons, 2},
+ {"data.l", cons, 4},
+ {"export", s_globl, 0},
+ {"option", s_ignore, 0},
+ {"end", s_ignore, 0},
+ {"import", s_ignore, 0},
+ {"sdata", stringer, 0},
+ 0,
+
+};
+
+
+
+void obj_symbol_new_hook(symbolP)
+symbolS *symbolP;
+{
+ symbolP->sy_symbol.sy.the_bfd = abfd;
+}
+
+
+
+
+
+#if 1
+extern void DEFUN_VOID(write_object_file)
+{
+ int i;
+ struct frchain *frchain_ptr;
+ struct frag *frag_ptr;
+
+ abfd = bfd_openw(out_file_name, "ieee");
+
+ if (abfd == 0) {
+ as_perror ("FATAL: Can't create %s", out_file_name);
+ exit(42);
+ }
+ bfd_set_format(abfd, bfd_object);
+ bfd_set_arch_mach(abfd, bfd_arch_h8300, 0);
+ subseg_new(1,0);
+ subseg_new(2,0);
+ subseg_new(3,0);
+ for (frchain_ptr = frchain_root;
+ frchain_ptr != (struct frchain *)NULL;
+ frchain_ptr = frchain_ptr->frch_next) {
+ /* Run through all the sub-segments and align them up. Also close any
+ open frags. We tack a .fill onto the end of the frag chain so
+ that any .align's size can be worked by looking at the next
+ frag */
+
+ subseg_new(frchain_ptr->frch_seg, frchain_ptr->frch_subseg);
+#define SUB_SEGMENT_ALIGN 2
+ frag_align(SUB_SEGMENT_ALIGN,0);
+ frag_wane(frag_now);
+ frag_now->fr_fix = 0;
+ know( frag_now->fr_next == NULL );
+ }
+
+ /* Now build one big frag chain for each segment, linked through
+ fr_next. */
+ for (i = SEG_E0; i < SEG_UNKNOWN; i++)
+ {
+
+ fragS ** prev_frag_ptr_ptr ;
+ struct frchain *next_frchain_ptr;
+
+ /* struct frag **head_ptr = segment_info[i].frag_root;*/
+
+ segment_info[i].frag_root = segment_info[i].frchainP->frch_root;
+#if 0
+ /* Im not sure what this is for */
+ for (frchain_ptr = segment_info[i].frchainP->frch_root;
+ frchain_ptr != (struct frchain *)NULL;
+ frchain_ptr = frchain_ptr->frch_next)
+ {
+ *head_ptr = frchain_ptr;
+ head_ptr = &frchain_ptr->next;
+ }
+
+
+#endif
+ }
+
+ for (i = SEG_E0; i < SEG_UNKNOWN; i++) {
+ relax_segment(segment_info[i].frag_root, i);
+ }
+
+ /* Now the addresses of the frags are correct within the segment */
+
+ bfd_as_write_hook();
+ bfd_close(abfd);
+}
+
+#endif
+
+H_SET_TEXT_SIZE(a,b) { abort(); }
+H_GET_TEXT_SIZE() { abort(); }
+H_SET_BSS_SIZE() { abort(); }
+H_SET_STRING_SIZE() { abort(); }
+H_SET_RELOCATION_SIZE() { abort(); }
+H_SET_MAGIC_NUMBER() { abort(); }
+H_GET_FILE_SIZE() { abort(); }
+H_GET_TEXT_RELOCATION_SIZE() { abort(); }
diff --git a/gas/config/obj-ieee.h b/gas/config/obj-ieee.h
new file mode 100644
index 0000000..c796e33
--- /dev/null
+++ b/gas/config/obj-ieee.h
@@ -0,0 +1,25 @@
+#define BFD 1
+
+
+#include <bfd.h>
+
+typedef struct
+{
+asymbol sy;
+int seg;
+} obj_symbol_type;
+
+#define S_GET_NAME(s) (((s)->sy_symbol.sy.name))
+
+typedef struct {
+int x;
+}
+object_headers;
+
+#define DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE 1
+
+
+int lineno_rootP;
+
+
+#define IEEE_STYLE
diff --git a/gas/config/tc-h8300.c b/gas/config/tc-h8300.c
new file mode 100644
index 0000000..b68307d
--- /dev/null
+++ b/gas/config/tc-h8300.c
@@ -0,0 +1,662 @@
+/* tc-h8300.c -- Assemble code for the Hitachi h8/300
+ Copyright (C) 1991 Free Software Foundation.
+
+This file is part of GAS, the GNU Assembler.
+
+GAS 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.
+
+GAS 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 GAS; see the file COPYING. If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+
+/*
+ Written By Steve Chamberlain
+ steve@cygnus.com
+ */
+
+#include <stdio.h>
+#include "as.h"
+#include "bfd.h"
+#include "h8300-opcode.h"
+#include <ctype.h>
+
+char comment_chars[] = { ';',0 };
+
+/* This table describes all the machine specific pseudo-ops the assembler
+ has to support. The fields are:
+ pseudo-op name without dot
+ function to call to execute this pseudo-op
+ Integer arg to pass to the function
+ */
+const pseudo_typeS md_pseudo_table[] = {
+ { 0, 0, 0 }
+};
+
+int md_reloc_size ;
+
+const char EXP_CHARS[] = "eE";
+
+/* Chars that mean this number is a floating point constant */
+/* As in 0f12.456 */
+/* or 0d1.2345e12 */
+ char FLT_CHARS[] = "rRsSfFdDxXpP";
+
+
+const relax_typeS md_relax_table[1];
+
+
+static struct hash_control *opcode_hash_control; /* Opcode mnemonics */
+static struct hash_control *register_hash_control; /* Register name hash table */
+
+
+/*
+ This function is called once, at assembler startup time. This should
+ set up all the tables, etc that the MD part of the assembler needs
+*/
+
+reloc_howto_type *r16;
+reloc_howto_type *r8;
+reloc_howto_type *r8ff;
+reloc_howto_type *r8pcrel;
+
+void md_begin ()
+{
+ bfd_arch_info_struct_type *ai;
+ const struct h8_opcode *opcode;
+
+ opcode_hash_control = hash_new();
+ for (opcode = h8_opcodes; opcode->name; opcode++) {
+ hash_insert(opcode_hash_control, opcode->name, (char *)opcode);
+ }
+
+ ai = bfd_lookup_arch(bfd_arch_h8300,0);
+
+ r16 = ai->reloc_type_lookup(ai, BFD_RELOC_16);
+ r8 = ai->reloc_type_lookup(ai, BFD_RELOC_8);
+ r8ff = ai->reloc_type_lookup(ai, BFD_RELOC_8_FFnn);
+ r8pcrel = ai->reloc_type_lookup(ai, BFD_RELOC_8_PCREL);
+
+
+}
+
+
+struct h8_exp {
+ char *e_beg;
+ char *e_end;
+ expressionS e_exp;
+};
+struct h8_op
+{
+op_enum_type mode;
+ unsigned reg;
+ expressionS exp;
+};
+
+
+
+/*
+ parse operands
+ WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
+ r0l,r0h,..r7l,r7h
+ @WREG
+ @WREG+
+ @-WREG
+ #const
+
+*/
+
+op_enum_type r8_sord[] = {RS8, RD8};
+op_enum_type r16_sord[] = {RS16, RD16};
+op_enum_type rind_sord[] = {RSIND, RDIND};
+op_enum_type abs_sord[2] = {ABS16SRC, ABS16DST};
+op_enum_type disp_sord[] = {DISPSRC, DISPDST};
+/* try and parse a reg name, returns number of chars consumed */
+int DEFUN(parse_reg,(src, mode, reg, dst),
+ char *src AND
+ op_enum_type *mode AND
+ unsigned int *reg AND
+ int dst)
+{
+ if (src[0] == 's' && src[1] == 'p') {
+ *mode = r16_sord[dst];
+ *reg = 7;
+ return 2;
+ }
+ if (src[0] == 'c' && src[1] == 'c' && src[2] == 'r') {
+ *mode = CCR;
+ *reg = 0;
+ return 3;
+ }
+ if (src[0] == 'f' && src[1] == 'p') {
+ *mode = r16_sord[dst];
+ *reg = 6;
+ return 2;
+ }
+ if (src[0] == 'r') {
+ if (src[1] >= '0' && src[1] <= '7') {
+ if(src[2] == 'l') {
+ *mode = r8_sord[dst];
+ *reg = (src[1] - '0') + 8;
+ return 3;
+ }
+ if(src[2] == 'h') {
+ *mode = r8_sord[dst];
+ *reg = (src[1] - '0') ;
+ return 3;
+ }
+ *mode = r16_sord[dst];
+ *reg = (src[1] - '0');
+ return 2;
+ }
+ }
+ return 0;
+}
+
+char *
+DEFUN(parse_exp,(s, op),
+ char *s AND
+ expressionS *op)
+{
+ char *save = input_line_pointer;
+ char *new;
+ segT seg;
+ input_line_pointer = s;
+ seg = expr(0,op);
+ new = input_line_pointer;
+ input_line_pointer = save;
+ if (SEG_NORMAL(seg))
+ return new;
+ switch (seg) {
+ case SEG_ABSOLUTE:
+ case SEG_UNKNOWN:
+ case SEG_DIFFERENCE:
+ case SEG_BIG:
+ case SEG_REGISTER:
+ return new;
+ case SEG_ABSENT:
+ as_bad("Missing operand");
+ return new;
+ default:
+ as_bad("Don't understand operand of type %s", segment_name (seg));
+ return new;
+ }
+}
+
+
+static void
+DEFUN(get_operand,(ptr, op, dst),
+ char **ptr AND
+ struct h8_op *op AND
+ unsigned int dst)
+{
+ char *src = *ptr;
+ op_enum_type mode;
+ unsigned int num;
+ unsigned int len;
+ op->mode = E;
+
+ while (*src == ' ') src++;
+ len = parse_reg(src, &op->mode, &op->reg, dst);
+ if (len) {
+ *ptr = src + len;
+ return ;
+ }
+
+ if (*src == '@') {
+ src++;
+ if (*src == '-') {
+ src++;
+ len = parse_reg(src, &mode, &num, dst);
+ if (len == 0 || mode != r16_sord[dst]) {
+ as_bad("@- needs word register");
+ }
+ op->mode = RDDEC;
+ op->reg = num;
+ *ptr = src + len;
+ return;
+ }
+ if (*src == '(' && ')') {
+ /* Disp */
+ src++;
+ src = parse_exp(src, &op->exp);
+
+ if (*src == ')') {
+ src++;
+ op->mode = abs_sord[dst];
+ *ptr = src;
+ return;
+ }
+ if (*src != ',') {
+ as_bad("expected @(exp, reg16)");
+ }
+ src++;
+ len = parse_reg(src, &mode, &op->reg, dst);
+ if (len == 0 || mode != r16_sord[dst])
+ {
+ as_bad("expected @(exp, reg16)");
+ }
+ op->mode = disp_sord[dst];
+ src += len;
+ if (*src != ')' && '(') {
+ as_bad("expected @(exp, reg16)");
+
+ }
+ *ptr = src +1;
+
+ return;
+ }
+ len = parse_reg(src, &mode, &num, dst);
+
+ if(len) {
+ src += len;
+ if (*src == '+') {
+ src++;
+ if (mode != RS16) {
+ as_bad("@Rn+ needs word register");
+ }
+ op->mode = RSINC;
+ op->reg = num;
+ *ptr = src;
+ return;
+ }
+ if (mode != r16_sord[dst]) {
+ as_bad("@Rn needs word register");
+ }
+ op->mode =rind_sord[dst];
+ op->reg = num;
+ *ptr = src;
+ return;
+ }
+ else {
+ /* must be a symbol */
+ op->mode = abs_sord[dst];
+ *ptr = parse_exp(src, &op->exp);
+ return;
+ }
+ }
+
+
+ if (*src == '#') {
+ src++;
+ op->mode = IMM16;
+ *ptr = parse_exp(src, &op->exp);
+ return;
+ }
+ else {
+ *ptr = parse_exp(src, &op->exp);
+ op->mode = DISP8;
+ }
+}
+
+/* This is the guts of the machine-dependent assembler. STR points to a
+ machine dependent instruction. This funciton is supposed to emit
+ the frags/bytes it assembles to.
+ */
+
+
+void
+DEFUN(md_assemble,(str),
+ char *str)
+{
+ char *op_start;
+ char *op_end;
+ struct h8_opcode * opcode;
+ /* Drop leading whitespace */
+ while (*str == ' ')
+ str++;
+
+
+ /* find the op code end */
+ for (op_start = op_end = str;
+ *op_end != 0 && *op_end != ' ';
+ op_end ++)
+ ;
+
+ if (op_end == op_start) {
+ as_bad("can't find opcode ");
+ }
+ *op_end = 0;
+ opcode = (struct h8_opcode *) hash_find(opcode_hash_control,
+ op_start);
+
+ if (opcode == NULL) {
+ as_bad("unknown opcode");
+ return;
+ }
+
+
+ {
+ int ok = 1;
+ int j,i;
+ int dispreg = 0;
+ struct h8_op operand[2];
+ char *ptr = op_end+1;
+ if (opcode->noperands)
+ get_operand(& ptr, &operand[0],0);
+ else operand[0].mode = 0;
+ if (opcode->noperands==2) {
+ if (*ptr == ',') ptr++;
+ get_operand(& ptr, &operand[1], 1);
+ }
+ else operand[1].mode = 0;
+
+
+
+ {
+ struct h8_opcode *this_try ;
+ int found = 0;
+ for (j = 0; j < opcode->nopcodes && !found; j++) {
+ this_try = opcode + j;
+ for (i = 0; i < opcode->noperands; i++) {
+ op_enum_type op = (this_try->args.nib[i]) & ~(B30|B31);
+ switch (op) {
+ case Hex0:
+ case Hex1:
+ case Hex2:
+ case Hex3:
+ case Hex4:
+ case Hex5:
+ case Hex6:
+ case Hex7:
+ case Hex8:
+ case Hex9:
+ case HexA:
+ case HexB:
+ case HexC:
+ case HexD:
+ case HexE:
+ case HexF:
+ break;
+ case DISPSRC:
+ case DISPDST:
+ dispreg = operand[i].reg;
+ case RD8:
+ case RS8:
+ case RDIND:
+ case RSIND:
+ case RD16:
+ case RS16:
+ case CCR:
+ case RSINC:
+ case RDDEC:
+ if (operand[i].mode != op) goto fail;
+ break;
+ case KBIT:
+ case IMM8:
+ case IMM16:
+ case IMM3:
+ if (operand[i].mode != IMM16) goto fail;
+ break;
+ case ABS16SRC:
+ case ABS8SRC:
+ if (operand[i].mode != ABS16SRC) goto fail;
+ break;
+ case ABS16DST:
+ case ABS8DST:
+ if (operand[i].mode != ABS16DST) goto fail;
+
+ break;
+ }
+ }
+ found =1;
+ fail: ;
+ }
+ if (found == 0)
+ as_bad("illegal operands for opcode");
+
+
+ /* Now we know what sort of opcodes etc, lets build the bytes -
+ actually we know how big the instruction will be too. So we
+ can get
+ */
+ {
+ char *output = frag_more(this_try->length);
+ char *output_ptr = output;
+ op_enum_type *nibble_ptr = this_try->data.nib;
+ char part;
+ op_enum_type c;
+ char high;
+ int nib;
+ top: ;
+ while (*nibble_ptr != E) {
+ int nibble;
+ for (nibble = 0; nibble <2; nibble++) {
+ c = *nibble_ptr & ~(B30|B31);
+ switch (c) {
+ default:
+ abort();
+
+ case 0:
+ case 1:
+ case 2: case 3: case 4: case 5: case 6:
+ case 7: case 8: case 9: case 10: case 11:
+ case 12: case 13: case 14: case 15:
+ nib = c;
+ break;
+ case DISPREG:
+ nib = dispreg;
+ break;
+ case IMM8:
+ /* if no symbol then put value in place */
+ if (operand[0].exp.X_add_symbol == 0) {
+ operand[0].mode = 0; /* stop it making a fix */
+ *output_ptr++ = (operand[0].exp.X_add_number);
+ nibble_ptr += 2;
+ goto top;
+ }
+ nib = 0;
+ break;
+
+ case DISPDST:
+ /* if no symbol then put value in place */
+ if (operand[1].exp.X_add_symbol == 0) {
+ operand[1].mode = 0; /* stop it making a fix */
+ *output_ptr++ =(operand[1].exp.X_add_number)>>8;
+ *output_ptr++ = (operand[1].exp.X_add_number);
+ nibble_ptr += 4;
+ goto top;
+ }
+
+ nib = 0;
+ break;
+ case IMM3:
+
+ if (operand[0].exp.X_add_symbol == 0) {
+ operand[0].mode = 0; /* stop it making a fix */
+ nib = (operand[0].exp.X_add_number);
+ }
+ else as_bad("can't have symbol for bit number");
+ break;
+
+ case DISPSRC:
+ case IMM16:
+ /* if no symbol then put value in place */
+ if (operand[0].exp.X_add_symbol == 0) {
+ operand[0].mode = 0; /* stop it making a fix */
+ *output_ptr++ =(operand[0].exp.X_add_number)>>8;
+ *output_ptr++ = (operand[0].exp.X_add_number);
+ nibble_ptr += 4;
+ goto top;
+ }
+
+
+ case ABS16SRC:
+ case ABS16DST:
+
+ case ABS8DST:
+ case ABS8SRC:
+ case IGNORE:
+
+
+ nib = 0;
+ break;
+ case DISP8:
+ nib = 0;
+ break;
+
+
+ case RS8:
+ case RS16:
+ case RSIND:
+ case RSINC:
+ case RDIND:
+ nib= operand[0].reg;
+ break;
+ case RD8:
+ case RD16:
+ case RDDEC:
+ nib = operand[1].reg;
+
+ break;
+ case E:
+ abort();
+ break;
+ }
+ if (*nibble_ptr & B31) nib|=0x8;
+ if (nibble == 0) {
+ *output_ptr = nib << 4;
+ }
+ else {
+ *output_ptr |= nib;
+ output_ptr++;
+ }
+ nibble_ptr++;
+ }
+
+ }
+
+ /* output any fixes */
+ {
+ int i;
+ for (i = 0; i < 2; i++) {
+ switch (operand[i].mode) {
+ case 0:
+ break;
+ case DISP8:
+ fix_new(frag_now,
+ output+1,
+ 1,
+ operand[i].exp.X_add_symbol,
+ operand[i].exp.X_subtract_symbol,
+ operand[i].exp.X_add_number,
+ 0,
+ (int)r8pcrel);
+ break;
+ case ABS16SRC:
+ case ABS16DST:
+ case IMM16:
+ case DISPSRC:
+ case DISPDST:
+ fix_new(frag_now,
+ output+2,
+ 2,
+ operand[i].exp.X_add_symbol,
+ operand[i].exp.X_subtract_symbol,
+ operand[i].exp.X_add_number,
+ 0,
+ (int)r16);
+ break;
+ case RS8:
+ case RD8:
+ case RS16:
+ case RD16:
+ case RDDEC:
+ case RSINC:
+ case RDIND:
+ case RSIND:
+ break;
+ default:
+ abort();
+ }
+ }
+ }
+
+ }
+ }
+ }
+}
+
+void
+DEFUN(tc_crawl_symbol_chain, (headers),
+object_headers *headers)
+{
+ printf("call to tc_crawl_symbol_chain \n");
+}
+
+symbolS *DEFUN(md_undefined_symbol,(name),
+ char *name)
+{
+return 0;
+}
+
+void
+DEFUN(tc_headers_hook,(headers),
+ object_headers *headers)
+{
+ printf("call to tc_headers_hook \n");
+}
+void
+DEFUN_VOID(md_end)
+{
+}
+
+/* Various routines to kill one day */
+
+char *md_atof () { printf("call to md_atof \n"); abort(); }
+int md_parse_option () { printf("call to md_parse_option \n"); abort(); }
+
+int md_short_jump_size;
+
+void tc_aout_fix_to_chars () { printf("call to tc_aout_fix_to_chars \n");
+ abort(); }
+void md_create_long_jump () { printf("call to md_create_long_jump \n");
+ abort(); }
+void md_convert_frag () { printf("call to md_convert_frag \n"); abort(); }
+
+long
+DEFUN(md_section_align,(seg, size),
+ segT seg AND
+ long size)
+{
+ return((size + (1 << section_alignment[(int) seg]) - 1) & (-1 << section_alignment[(int) seg]));
+
+}
+
+void md_apply_fix () { printf("call to md_apply_fix \n"); abort(); }
+
+void DEFUN(md_operand, (expressionP),expressionS *expressionP)
+{ }
+
+int md_long_jump_size;
+int md_estimate_size_before_relax () { printf("call tomd_estimate_size_before_relax \n"); abort(); }
+/* Put number into target byte order */
+void DEFUN(md_number_to_chars,(ptr, use, nbytes),
+ char *ptr AND
+ int use AND
+ unsigned int nbytes)
+{
+ switch (nbytes) {
+ case 4: *ptr++ = (use >> 24) & 0xff;
+ case 3: *ptr++ = (use >> 16) & 0xff;
+ case 2: *ptr++ = (use >> 8) & 0xff;
+ case 1: *ptr++ = (use >> 0) & 0xff;
+ break;
+ default:
+ abort();
+ }
+}
+
+long md_pcrel_from () { printf("call to md_pcrel_from \n"); abort(); }
+void md_create_short_jump () { printf("call to md_create_short_jump \n");
+ abort(); }
+
+void tc_coff_symbol_emit_hook() { }
generated by cgit v1.1 at 2024-11-20 09:16:01 +0000