Tue Sep 24 12:22:18 1996 Martin M. Hunt <hunt@pizza.cygnus.com>
* tc-d10v.c (md_operand): Created. Allows operands to start with '#'. * tc-d10v.h (md_operand): Undefined.
This commit is contained in:
Martin Hunt
parent
8626a9d58a
commit
3547832c08
1 changed files with 189 additions and 53 deletions
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@ -26,7 +26,7 @@
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#include "opcode/d10v.h"
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#include "elf/ppc.h"
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const char comment_chars[] = "#;";
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const char comment_chars[] = ";";
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const char line_comment_chars[] = "#";
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const char line_separator_chars[] = "";
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const char *md_shortopts = "O";
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@ -35,6 +35,8 @@ const char FLT_CHARS[] = "dD";
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int Optimizing = 0;
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#define AT_WORD (-1)
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/* fixups */
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#define MAX_INSN_FIXUPS (5)
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struct d10v_fixup
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@ -42,6 +44,8 @@ struct d10v_fixup
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expressionS exp;
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int operand;
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int pcrel;
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int size;
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bfd_reloc_code_real_type reloc;
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};
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typedef struct _fixups
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@ -79,9 +83,12 @@ struct option md_longopts[] = {
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};
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size_t md_longopts_size = sizeof(md_longopts);
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static void d10v_dot_word PARAMS ((int));
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/* The target specific pseudo-ops which we support. */
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const pseudo_typeS md_pseudo_table[] =
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{
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{ "word", d10v_dot_word, 2 },
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{ NULL, NULL, 0 }
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};
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@ -362,6 +369,7 @@ get_reloc (op)
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return (BFD_RELOC_16);
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}
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/* get_operands parses a string of operands and returns
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an array of expressions */
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@ -412,7 +420,6 @@ get_operands (exp)
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input_line_pointer = p;
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/* check to see if it might be a register name */
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if (!register_name (&exp[numops]))
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{
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@ -420,6 +427,20 @@ get_operands (exp)
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expression (&exp[numops]);
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}
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if (!strncasecmp (input_line_pointer, "@word", 5))
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{
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if (exp[numops].X_op == O_register)
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{
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/* if it looked like a register name but was followed by "@word" */
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/* then it was really a symbol, so change it to one */
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exp[numops].X_op = O_symbol;
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exp[numops].X_add_symbol = symbol_find_or_make ((char *)exp[numops].X_op_symbol);
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exp[numops].X_op_symbol = NULL;
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}
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exp[numops].X_add_number = AT_WORD;
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input_line_pointer += 5;
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}
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if (exp[numops].X_op == O_illegal)
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as_bad ("illegal operand");
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else if (exp[numops].X_op == O_absent)
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@ -519,6 +540,21 @@ build_insn (opcode, opers, insn)
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if (fixups->fc >= MAX_INSN_FIXUPS)
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as_fatal ("too many fixups");
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if (opers[i].X_op == O_symbol && number == AT_WORD)
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{
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number = opers[i].X_add_number = 0;
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fixups->fix[fixups->fc].reloc = BFD_RELOC_D10V_18;
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} else
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fixups->fix[fixups->fc].reloc =
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get_reloc((struct d10v_operand *)&d10v_operands[opcode->operands[i]]);
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if (fixups->fix[fixups->fc].reloc == BFD_RELOC_16 ||
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fixups->fix[fixups->fc].reloc == BFD_RELOC_D10V_18)
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fixups->fix[fixups->fc].size = 2;
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else
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fixups->fix[fixups->fc].size = 4;
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fixups->fix[fixups->fc].exp = opers[i];
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fixups->fix[fixups->fc].operand = opcode->operands[i];
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fixups->fix[fixups->fc].pcrel = (flags & OPERAND_ADDR) ? true : false;
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@ -548,7 +584,7 @@ write_long (opcode, insn, fx)
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unsigned long insn;
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Fixups *fx;
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{
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int i;
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int i, where;
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char *f = frag_more(4);
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insn |= FM11;
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@ -557,17 +593,23 @@ write_long (opcode, insn, fx)
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for (i=0; i < fx->fc; i++)
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{
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if (get_reloc((struct d10v_operand *)&d10v_operands[fx->fix[i].operand]))
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if (fx->fix[i].reloc)
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{
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where = f - frag_now->fr_literal;
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if (fx->fix[i].size == 2)
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where += 2;
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/*
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printf("fix_new_exp: where:%x size:4\n ",f - frag_now->fr_literal);
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printf("fix_new_exp: where:%x size:%d\n ",where,fx->fix[i].size);
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print_expr_1(stdout,&(fx->fix[i].exp));
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printf("\n");
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*/
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if (fx->fix[i].reloc == BFD_RELOC_D10V_18)
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fx->fix[i].operand |= 4096;
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fix_new_exp (frag_now,
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f - frag_now->fr_literal,
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4,
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where,
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fx->fix[i].size,
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&(fx->fix[i].exp),
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fx->fix[i].pcrel,
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fx->fix[i].operand|2048);
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@ -585,7 +627,7 @@ write_1_short (opcode, insn, fx)
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Fixups *fx;
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{
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char *f = frag_more(4);
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int i;
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int i, where;
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if (opcode->exec_type & PARONLY)
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as_fatal ("Instruction must be executed in parallel with another instruction.");
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@ -602,23 +644,28 @@ write_1_short (opcode, insn, fx)
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number_to_chars_bigendian (f, insn, 4);
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for (i=0; i < fx->fc; i++)
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{
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bfd_reloc_code_real_type reloc;
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reloc = get_reloc((struct d10v_operand *)&d10v_operands[fx->fix[i].operand]);
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if (reloc)
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if (fx->fix[i].reloc)
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{
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where = f - frag_now->fr_literal;
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if (fx->fix[i].size == 2)
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where += 2;
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/*
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printf("fix_new_exp: where:%x size:4\n ",f - frag_now->fr_literal);
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printf("fix_new_exp: where:%x size:%d\n ",where, fx->fix[i].size);
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print_expr_1(stdout,&(fx->fix[i].exp));
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printf("\n");
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*/
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if (fx->fix[i].reloc == BFD_RELOC_D10V_18)
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fx->fix[i].operand |= 4096;
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/* if it's an R reloc, we may have to switch it to L */
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if ( (reloc == BFD_RELOC_D10V_10_PCREL_R) && (opcode->unit != IU) )
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if ( (fx->fix[i].reloc == BFD_RELOC_D10V_10_PCREL_R) && (opcode->unit != IU) )
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fx->fix[i].operand |= 1024;
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fix_new_exp (frag_now,
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f - frag_now->fr_literal,
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4,
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where,
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fx->fix[i].size,
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&(fx->fix[i].exp),
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fx->fix[i].pcrel,
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fx->fix[i].operand|2048);
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@ -638,7 +685,7 @@ write_2_short (opcode1, insn1, opcode2, insn2, exec_type, fx)
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{
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unsigned long insn;
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char *f;
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int i,j;
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int i,j, where;
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if ( (exec_type != 1) && ((opcode1->exec_type & PARONLY)
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|| (opcode2->exec_type & PARONLY)))
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@ -729,23 +776,29 @@ write_2_short (opcode1, insn1, opcode2, insn2, exec_type, fx)
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for (j=0; j<2; j++)
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{
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bfd_reloc_code_real_type reloc;
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for (i=0; i < fx->fc; i++)
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{
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reloc = get_reloc((struct d10v_operand *)&d10v_operands[fx->fix[i].operand]);
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if (reloc)
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if (fx->fix[i].reloc)
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{
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if ( (reloc == BFD_RELOC_D10V_10_PCREL_R) && (j == 0) )
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where = f - frag_now->fr_literal;
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if (fx->fix[i].size == 2)
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where += 2;
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if ( (fx->fix[i].reloc == BFD_RELOC_D10V_10_PCREL_R) && (j == 0) )
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fx->fix[i].operand |= 1024;
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if (fx->fix[i].reloc == BFD_RELOC_D10V_18)
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fx->fix[i].operand |= 4096;
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/*
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printf("fix_new_exp: where:%x reloc:%d\n ",f - frag_now->fr_literal,fx->fix[i].operand);
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printf("fix_new_exp: where:%x reloc:%d\n ",where,fx->fix[i].operand);
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print_expr_1(stdout,&(fx->fix[i].exp));
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printf("\n");
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*/
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fix_new_exp (frag_now,
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f - frag_now->fr_literal,
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4,
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where,
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fx->fix[i].size,
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&(fx->fix[i].exp),
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fx->fix[i].pcrel,
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fx->fix[i].operand|2048);
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@ -1013,7 +1066,7 @@ do_assemble (str, opcode)
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input_line_pointer = save;
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insn = build_insn ((*opcode), myops, 0);
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/* printf("sub-insn = %lx\n",insn); */
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/* printf("sub-insn = %lx\n",insn); */
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return (insn);
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}
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@ -1037,7 +1090,7 @@ find_opcode (opcode, myops)
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if (opcode->format == OPCODE_FAKE)
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{
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int opnum = opcode->operands[0];
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if (myops[opnum].X_op == O_register)
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{
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myops[opnum].X_op = O_symbol;
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@ -1064,9 +1117,29 @@ find_opcode (opcode, myops)
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}
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else
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{
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int value = obstack_next_free(&frchain_now->frch_obstack) - frag_now->fr_literal -
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S_GET_VALUE(myops[opnum].X_add_symbol);
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if (!check_range (value, bits, flags))
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fragS *f;
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long value;
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/* calculate the current address by running through the previous frags */
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/* and adding our current offset */
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for (value = 0, f = frchain_now->frch_root; f; f = f->fr_next)
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value += f->fr_fix;
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if (flags & OPERAND_ADDR)
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value = S_GET_VALUE(myops[opnum].X_add_symbol) - value -
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(obstack_next_free(&frchain_now->frch_obstack) - frag_now->fr_literal);
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else
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value = S_GET_VALUE(myops[opnum].X_add_symbol);
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if (myops[opnum].X_add_number == AT_WORD)
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{
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if (bits > 4)
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{
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bits += 2;
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if (!check_range (value, bits, flags))
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return next_opcode;
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}
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}
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else if (!check_range (value, bits, flags))
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return next_opcode;
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}
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next_opcode++;
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@ -1092,7 +1165,7 @@ find_opcode (opcode, myops)
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int flags = d10v_operands[opcode->operands[i]].flags;
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int X_op = myops[i].X_op;
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int num = myops[i].X_add_number;
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if (X_op==0)
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{
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match=0;
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@ -1121,12 +1194,13 @@ find_opcode (opcode, myops)
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break;
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}
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}
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/* we're only done if the operands matched so far AND there
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are no more to check */
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if (match && myops[i].X_op==0)
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break;
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else
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match = 0;
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next_opcode = opcode+1;
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if (next_opcode->opcode == 0)
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break;
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@ -1237,14 +1311,14 @@ md_apply_fix3 (fixp, valuep, seg)
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else
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{
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/* We don't actually support subtracting a symbol. */
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as_bad_where (fixp->fx_file, fixp->fx_line,
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as_bad_where (fixp->fx_file, fixp->fx_line,
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"expression too complex");
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}
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}
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}
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/* printf("md_apply_fix: value=0x%x type=0x%x where=0x%x size=%d line=%d\n", value, fixp->fx_r_type,fixp->fx_where,fixp->fx_size, fixp->fx_line); */
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op_type = fixp->fx_r_type;
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if (op_type & 2048)
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{
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@ -1255,6 +1329,11 @@ md_apply_fix3 (fixp, valuep, seg)
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fixp->fx_r_type = BFD_RELOC_D10V_10_PCREL_L;
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left = 1;
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}
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else if (op_type & 4096)
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{
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op_type -= 4096;
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fixp->fx_r_type = BFD_RELOC_D10V_18;
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}
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else
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fixp->fx_r_type = get_reloc((struct d10v_operand *)&d10v_operands[op_type]);
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}
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@ -1269,33 +1348,29 @@ md_apply_fix3 (fixp, valuep, seg)
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case BFD_RELOC_D10V_10_PCREL_L:
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case BFD_RELOC_D10V_10_PCREL_R:
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case BFD_RELOC_D10V_18_PCREL:
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case BFD_RELOC_D10V_18:
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/* instruction addresses are always right-shifted by 2 */
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value >>= 2;
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if (fixp->fx_size == 2)
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bfd_putb16 ((bfd_vma) value, (unsigned char *) where);
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else
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{
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/* printf(" insn=%x value=%x where=%x pcrel=%x\n",insn,value,fixp->fx_where,fixp->fx_pcrel); */
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insn = d10v_insert_operand (insn, op_type, (offsetT)value, left, fixp);
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/* printf(" new insn=%x\n",insn); */
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bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
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}
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break;
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case BFD_RELOC_32:
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bfd_putb32 ((bfd_vma) value, (unsigned char *) where);
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return 1;
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case BFD_RELOC_16:
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if (fixp->fx_size == 2)
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{
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bfd_putb16 ((bfd_vma) value, (unsigned char *) where);
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return 1;
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}
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default:
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break;
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case BFD_RELOC_16:
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bfd_putb16 ((bfd_vma) value, (unsigned char *) where);
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break;
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default:
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as_fatal ("line %d: unknown relocation type: 0x%x",fixp->fx_line,fixp->fx_r_type);
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}
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/* printf(" insn=%x value=%x where=%x pcrel=%x\n",insn,value,fixp->fx_where,fixp->fx_pcrel); */
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insn = d10v_insert_operand (insn, op_type, (offsetT)value, left, fixp);
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/* printf(" new insn=%x\n",insn); */
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bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
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if (fixp->fx_done)
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return 1;
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fixp->fx_addnumber = value;
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return 1;
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return 0;
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}
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@ -1321,3 +1396,64 @@ d10v_cleanup (done)
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}
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return 1;
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}
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/* Like normal .word, except support @word */
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/* clobbers input_line_pointer, checks end-of-line. */
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static void
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d10v_dot_word (nbytes)
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register int nbytes; /* 1=.byte, 2=.word, 4=.long */
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{
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expressionS exp;
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bfd_reloc_code_real_type reloc;
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char *p;
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int offset;
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if (is_it_end_of_statement ())
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{
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demand_empty_rest_of_line ();
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return;
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}
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do
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{
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expression (&exp);
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if (!strncasecmp (input_line_pointer, "@word", 5))
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{
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exp.X_add_number = 0;
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input_line_pointer += 5;
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p = frag_more (2);
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fix_new_exp (frag_now, p - frag_now->fr_literal, 2,
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&exp, 0, BFD_RELOC_D10V_18);
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}
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else
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emit_expr (&exp, 2);
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}
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while (*input_line_pointer++ == ',');
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input_line_pointer--; /* Put terminator back into stream. */
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demand_empty_rest_of_line ();
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}
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/* Mitsubishi asked that we support some old syntax that apparently */
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/* had immediate operands starting with '#'. This is in some of their */
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/* sample code but is not documented (although it appears in some */
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/* examples in their assembler manual). For now, we'll solve this */
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/* compatibility problem by simply ignoring any '#' at the beginning */
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/* of an operand. */
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|
||||
/* operands that begin with '#' should fall through to here */
|
||||
/* from expr.c */
|
||||
|
||||
void
|
||||
md_operand (expressionP)
|
||||
expressionS *expressionP;
|
||||
{
|
||||
if (*input_line_pointer == '#')
|
||||
{
|
||||
input_line_pointer++;
|
||||
expression (expressionP);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue