-
/* tc-h8500.c -- Assemble code for the Hitachi H8/500
Copyright (C) 1993 Free Software Foundation.
#include <stdio.h>
#include "as.h"
#include "bfd.h"
-
+#include "subsegs.h"
#define DEFINE_TABLE
+#define ASSEMBLER_TABLE
#include "../opcodes/h8500-opc.h"
#include <ctype.h>
-const char comment_chars[] =
-{';', 0};
-const char line_separator_chars[] =
-{'$', 0};
-const char line_comment_chars[] = "";
+const char comment_chars[] = "!";
+const char line_separator_chars[] = ";";
+const char line_comment_chars[] = "!";
/* This table describes all the machine specific pseudo-ops the assembler
has to support. The fields are:
}
-int rn; /* register number used by RN */
-int rs; /* register number used by RS */
-int rd; /* register number used by RD */
-int crb; /* byte size cr */
-int crw; /* word sized cr */
+static int rn; /* register number used by RN */
+static int rs; /* register number used by RS */
+static int rd; /* register number used by RD */
+static int crb; /* byte size cr */
+static int crw; /* word sized cr */
+static int cr; /* unknown size cr */
-expressionS displacement; /* displacement expression */
-int displacement_size; /* and size if given */
+static expressionS displacement;/* displacement expression */
+static int displacement_size; /* and size if given */
-int immediate_inpage;
-expressionS immediate; /* immediate expression */
-int immediate_size; /* and size if given */
+static int immediate_inpage;
+static expressionS immediate; /* immediate expression */
+static int immediate_size; /* and size if given */
-expressionS absolute; /* absolute expression */
-int absolute_size; /* and size if given */
+static expressionS absolute; /* absolute expression */
+static int absolute_size; /* and size if given */
typedef struct
{
h8500_operand_info;
/* try and parse a reg name, returns number of chars consumed */
-int
+static int
parse_reg (src, mode, reg)
char *src;
int *mode;
- unsigned int *reg;
+ int *reg;
{
if (src[0] == 'r')
{
if (src[0] == 't' && src[1] == 'p')
{
- *mode = CRW;
+ *mode = CRB;
*reg = 7;
return 2;
}
return 0;
}
+static
char *
parse_exp (s, op, page)
char *s;
expressionS *op;
-int *page;
+ int *page;
{
- char *save;
+ char *save;
char *new;
segT seg;
save = input_line_pointer;
-*page = 0;
+ *page = 0;
if (s[0] == '%')
- {
- if (s[1] == 'p' && s[2] == 'a' && s[3] == 'g' && s[4] == 'e') {
- s+=5;
+ {
+ if (s[1] == 'p' && s[2] == 'a' && s[3] == 'g' && s[4] == 'e')
+ {
+ s += 5;
-*page = 1;
- }
- else if (s[1] == 'o' && s[2] == 'f' && s[3] == 'f') {
- s+=4;
+ *page = 'p';
+ }
+ else if (s[1] == 'o' && s[2] == 'f' && s[3] == 'f')
+ {
+ s += 4;
+ *page = 'o';
+ }
}
- }
input_line_pointer = s;
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;
- }
+ 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;
+ }
}
+typedef enum
+ {
+ exp_signed, exp_unsigned, exp_sandu
+ } sign_type;
+
+
static char *
-skip_colonthing (ptr, exp, def, size8, size16, size24)
+skip_colonthing (sign, ptr, exp, def, size8, size16, size24)
+ sign_type sign;
char *ptr;
h8500_operand_info *exp;
int def;
{
ptr = parse_exp (ptr, &exp->exp, &exp->page);
if (*ptr == ':')
- {
- ptr++;
- if (*ptr == '8')
{
ptr++;
- exp->type = size8;
- }
- else if (ptr[0] == '1' & ptr[1] == '6')
- {
- ptr += 2;
- exp->type = size16;
- }
- else if (ptr[0] == '2' & ptr[1] == '4')
- {
- if (!size24)
- {
- as_bad (":24 not valid for this opcode");
- }
- ptr += 2;
- exp->type = size24;
- }
- else
- {
- as_bad ("expect :8,:16 or :24");
- exp->type = size16;
+ if (*ptr == '8')
+ {
+ ptr++;
+ exp->type = size8;
+ }
+ else if (ptr[0] == '1' & ptr[1] == '6')
+ {
+ ptr += 2;
+ exp->type = size16;
+ }
+ else if (ptr[0] == '2' & ptr[1] == '4')
+ {
+ if (!size24)
+ {
+ as_bad (":24 not valid for this opcode");
+ }
+ ptr += 2;
+ exp->type = size24;
+ }
+ else
+ {
+ as_bad ("expect :8,:16 or :24");
+ exp->type = size16;
+ }
}
- }
else
- {
- if(exp->page) {
- exp->type = IMM8;
- }
- else {
- /* Let's work out the size from the context */
- if (size8
- && exp->exp.X_seg == SEG_ABSOLUTE
- && exp->exp.X_add_number >= -128
- && exp->exp.X_add_number <= 127)
- {
- exp->type = size8;
- }
+ {
+ if (exp->page == 'p')
+ {
+ exp->type = IMM8;
+ }
else
- {
- exp->type = def;
- }
+ {
+ /* Let's work out the size from the context */
+ int n = exp->exp.X_add_number;
+ if (size8
+ && exp->exp.X_seg == SEG_ABSOLUTE
+ && ((sign == exp_signed && (n >= -128 && n <= 127))
+ || (sign == exp_unsigned && (n >= 0 && (n <= 255)))
+ || (sign == exp_sandu && (n >= -128 && (n <= 255)))))
+ {
+ exp->type = size8;
+ }
+ else
+ {
+ exp->type = def;
+ }
+ }
}
- }
return ptr;
}
static int
-parse_reglist(src, op)
-char *src;
-h8500_operand_info *op;
+parse_reglist (src, op)
+ char *src;
+ h8500_operand_info *op;
{
int mode;
int rn;
int mask = 0;
int rm;
int idx = 1; /* skip ( */
- while (src[idx] && src[idx] != ')')
- {
- int done = parse_reg(src+idx, &mode, &rn);
- if (done)
- {
- idx += done;
- mask |= 1<<rn;
- }
- else
- {
- as_bad("syntax error in reg list");
- return 0;
- }
- if (src[idx]== '-')
+
+ while (src[idx] && src[idx] != ')')
{
- idx++;
- done = parse_reg(src+idx, &mode, &rm);
- if (done) {
- idx += done;
- while (rn <= rm) {
- mask |= 1<<rn;
- rn++;
+ int done = parse_reg (src + idx, &mode, &rn);
+
+ if (done)
+ {
+ idx += done;
+ mask |= 1 << rn;
+ }
+ else
+ {
+ as_bad ("syntax error in reg list");
+ return 0;
+ }
+ if (src[idx] == '-')
+ {
+ idx++;
+ done = parse_reg (src + idx, &mode, &rm);
+ if (done)
+ {
+ idx += done;
+ while (rn <= rm)
+ {
+ mask |= 1 << rn;
+ rn++;
+ }
+ }
+ else
+ {
+ as_bad ("missing final register in range");
+ }
}
- }
- else {
- as_bad("missing final register in range");
- }
+ if (src[idx] == ',')
+ idx++;
}
- if (src[idx] == ',')
- idx++;
- }
idx++;
op->exp.X_add_symbol = 0;
op->exp.X_subtract_symbol = 0;
op->exp.X_add_number = mask;
op->exp.X_seg = SEG_ABSOLUTE;
- op->type= IMM8;
+ op->type = IMM8;
return idx;
}
+
/* The many forms of operand:
Rn Register direct
*/
static void
-get_operand (ptr, op)
+get_operand (ptr, op, ispage)
char **ptr;
h8500_operand_info *op;
+ char ispage;
{
char *src = *ptr;
int mode;
unsigned int num;
unsigned int len;
- unsigned int size;
if (src[0] == '(' && src[1] == 'r')
- {
- /* This is a register list */
- *ptr = src + parse_reglist(src, op);
- return;
- }
+ {
+ /* This is a register list */
+ *ptr = src + parse_reglist (src, op);
+ return;
+ }
len = parse_reg (src, &op->type, &op->reg);
/* Oops, not a reg after all, must be ordinary exp */
src--;
/* must be a symbol */
- *ptr = skip_colonthing (src, op, ABS16, ABS8, ABS16, ABS24);
+ *ptr = skip_colonthing (exp_unsigned, src,
+ op, ABS16, ABS8, ABS16, ABS24);
return;
}
/* Disp */
src++;
- src = skip_colonthing (src, op, RNIND_D16, RNIND_D8, RNIND_D16, 0);
+ src = skip_colonthing (exp_signed, src,
+ op, RNIND_D16, RNIND_D8, RNIND_D16, 0);
if (*src != ',')
{
else
{
/* must be a symbol */
- *ptr = skip_colonthing (src, op, ABS16, ABS8, ABS16, 0);
+ *ptr =
+ skip_colonthing (exp_unsigned, src, op,
+ ispage ? ABS24 : ABS16, ABS8, ABS16, ABS24);
return;
}
}
if (*src == '#')
{
src++;
- *ptr = skip_colonthing (src, op, IMM16, IMM8, IMM16, 0);
+ *ptr = skip_colonthing (exp_sandu, src, op, IMM16, IMM8, IMM16, ABS24);
return;
}
else
{
- *ptr = skip_colonthing (src, op, PCREL8, PCREL8, PCREL16, 0);
+ *ptr = skip_colonthing (exp_signed, src, op,
+ ispage ? ABS24 : PCREL8, PCREL8, PCREL16, ABS24);
}
}
case 1:
ptr++;
- get_operand (&ptr, operand + 0, 0);
+ get_operand (&ptr, operand + 0, info->name[0] == 'p');
operand[1].type = 0;
break;
get_operand (&ptr, operand + 0, 0);
if (*ptr == ',')
ptr++;
- get_operand (&ptr, operand + 1, 1);
+ get_operand (&ptr, operand + 1, 0);
break;
default:
provided
*/
-int pcrel8;
+int pcrel8; /* Set when we've seen a pcrel operand */
static
h8500_opcode_info *
int found = 0;
unsigned int noperands = opcode->nargs;
- unsigned int dispreg;
unsigned int this_index = opcode->idx;
while (this_index == opcode->idx && !found)
switch (this_try->arg_type[i])
{
- case FPIND_D16:
- /* Opcode needs (disp:16,fp) */
- if (user->type == DISP16 && user->reg == 6)
- {
- displacement = user->exp;
- continue;
- }
- break;
case FPIND_D8:
/* Opcode needs (disp:8,fp) */
- if (user->type == DISP8 && user->reg == 6)
+ if (user->type == RNIND_D8 && user->reg == 6)
{
displacement = user->exp;
continue;
continue;
}
break;
+
case SPDEC:
if (user->type == RNDEC && user->reg == 7)
{
continue;
}
break;
+
case CRB:
- if (user->type == CRB)
+ if ((user->type == CRB || user->type == CR) && user->reg != 0)
{
crb = user->reg;
continue;
}
break;
case CRW:
- if (user->type == CRW)
+ if ((user->type == CRW || user->type == CR) && user->reg == 0)
{
crw = user->reg;
continue;
break;
case IMM16:
- if (user->type == IMM16
+ if (user->type == IMM16
|| user->type == IMM8)
{
immediate_inpage = user->page;
continue;
}
break;
- case RLIST:
+ case RLIST:
case IMM8:
if (user->type == IMM8)
{
continue;
}
break;
- case RDIND:
+ case RDIND:
if (user->type == RNIND)
- {
- rd = user->reg;
- continue;
- }
+ {
+ rd = user->reg;
+ continue;
+
+ }
break;
case RNINC:
case RNIND:
return operand->X_add_number;
}
-#if 0
-static void
-DEFUN (check_operand, (operand, width, string),
- struct h8_op *operand AND
- unsigned int width AND
- char *string)
-{
- if (operand->exp.X_add_symbol == 0
- && operand->exp.X_subtract_symbol == 0)
- {
-
- /* No symbol involved, let's look at offset, it's dangerous if any of
- the high bits are not 0 or ff's, find out by oring or anding with
- the width and seeing if the answer is 0 or all fs*/
- if ((operand->exp.X_add_number & ~width) != 0 &&
- (operand->exp.X_add_number | width) != (~0))
- {
- as_warn ("operand %s0x%x out of range.", string, operand->exp.X_add_number);
- }
- }
-
-}
-
-#endif
-
-insert (size, output, index, exp, reloc, opcode)
+static
+void
+insert (output, index, exp, reloc, pcrel)
char *output;
int index;
expressionS *exp;
- char *opcode;
+ int reloc;
+ int pcrel;
{
- md_number_to_chars (output + index, exp->X_add_number, size);
- exp->X_add_number = 0;
- if (exp->X_add_symbol || exp->X_subtract_symbol)
- {
- fix_new (frag_now,
- output - frag_now->fr_literal + index,
- size,
- exp->X_add_symbol,
- exp->X_subtract_symbol,
- (short) (exp->X_add_number),
- 0,
- reloc);
- }
+ fix_new (frag_now,
+ output - frag_now->fr_literal + index,
+ 4, /* always say size is 4, but we know better */
+ exp->X_add_symbol,
+ exp->X_subtract_symbol,
+ exp->X_add_number,
+ pcrel,
+ reloc);
}
void
int type;
if (opcode->bytes[0].contents == 0x01)
- {
- type = SCB_F;
- }
+ {
+ type = SCB_F;
+ }
else if (opcode->bytes[0].contents == 0x06
|| opcode->bytes[0].contents == 0x07)
- {
- type = SCB_TST;
- }
+ {
+ type = SCB_TST;
+ }
else
- {
- type = BRANCH;
- }
+ {
+ type = BRANCH;
+ }
p = frag_var (rs_machine_dependent,
md_relax_table[C (type, WORD_DISP)].rlx_length,
0);
p[0] = opcode->bytes[0].contents;
- if (type != BRANCH)
- {
- p[1] = opcode->bytes[1].contents | rs;
- }
+ if (type != BRANCH)
+ {
+ p[1] = opcode->bytes[1].contents | rs;
+ }
}
/* Now we know what sort of opcodes it is, lets build the bytes -
h8500_operand_info *operand;
{
- unsigned int i;
-
- char part;
int index;
- char high;
- int nib;
- int byte;
if (pcrel8)
{
output[index] |= rs;
break;
case DISP16:
- case FPIND_D16:
- insert (2, output, index, &displacement, R_H8500_IMM16);
+ insert (output, index, &displacement, R_H8500_IMM16, 0);
index++;
break;
case DISP8:
case FPIND_D8:
- insert (1, output, index, &displacement, R_H8500_IMM8);
+ insert (output, index, &displacement, R_H8500_IMM8, 0);
break;
case IMM16:
- insert (2, output, index, &immediate, R_H8500_IMM16);
+ insert (output, index, &immediate, immediate_inpage ?
+ R_H8500_LOW16 : R_H8500_IMM16, 0);
index++;
break;
- case RLIST:
+ case RLIST:
case IMM8:
- insert (1, output, index, &immediate, immediate_inpage ?
- R_H8500_HIGH8 : R_H8500_IMM8);
+ if (immediate_inpage)
+ {
+ insert (output, index, &immediate, R_H8500_HIGH8, 0);
+ }
+ else
+ {
+ insert (output, index, &immediate, R_H8500_IMM8, 0);
+ }
break;
case PCREL16:
- insert (2, output, index, &displacement, R_H8500_PCREL16);
+ insert (output, index, &displacement, R_H8500_PCREL16, 1);
index++;
break;
case PCREL8:
- insert (1, output, index, &displacement, R_H8500_PCREL8, output);
+ insert (output, index, &displacement, R_H8500_PCREL8, 1);
break;
case IMM4:
output[index] |= check (&immediate, 0, 15);
break;
+ case CR:
+
+ output[index] |= cr;
+ if (cr == 0)
+ {
+ output[0] |= 0x8;
+ }
+ else
+ {
+ output[0] &= ~0x8;
+ }
+
+ break;
+
case CRB:
output[index] |= crb;
+ output[0] &= ~0x8;
break;
case CRW:
output[index] |= crw;
+ output[0] |= 0x8;
+ break;
+ case ABS24:
+ insert (output, index, absolute, R_H8500_IMM24, 0);
+ index += 2;
break;
case ABS16:
- insert (2, output, index, absolute, R_H8500_IMM16);
+ insert (output, index, absolute, R_H8500_IMM16, 0);
index++;
break;
case ABS8:
- insert (1, output, index, absolute, R_H8500_IMM8);
+ insert (output, index, absolute, R_H8500_IMM8, 0);
break;
case QIM:
switch (immediate.X_add_number)
{
char *op_start;
char *op_end;
- unsigned int i;
h8500_operand_info operand[2];
h8500_opcode_info *opcode;
h8500_opcode_info *prev_opcode;
char name[11];
- char *dot = 0;
- char c;
int nlen = 0;
/* find the op code end */
for (op_start = op_end = str;
- *op_end != 0 && *op_end != ' ';
+ *op_end &&
+ !is_end_of_line[*op_end] && *op_end != ' ';
op_end++)
{
- if (*op_end != '.'
+ if ( /**op_end != '.'
&& *op_end != ':'
- && nlen < 10)
+ && */ nlen < 10)
{
name[nlen++] = *op_end;
}
{
return 0;
-
}
int md_short_jump_size;
switch (buffer[0])
{
- case 0x0e: /* BSR */
+ case 0x0e: /* BSR */
case 0x20:
case 0x21:
case 0x22:
case 0x23:
+ case 0x24:
case 0x25:
case 0x26:
case 0x27:
fragS *fragP;
{
- fixS *fixP;
int disp_size = 0;
int inst_size = 0;
char *buffer = fragP->fr_fix + fragP->fr_literal;
wordify_scb (buffer, &disp_size, &inst_size);
/* Make a reloc */
- fixP = fix_new (fragP,
- fragP->fr_fix + inst_size,
- 2,
- fragP->fr_symbol,
- 0,
- fragP->fr_offset,
- 0,
- R_H8500_PCREL16);
+ fix_new (fragP,
+ fragP->fr_fix + inst_size,
+ 4,
+ fragP->fr_symbol,
+ 0,
+ fragP->fr_offset,
+ 0,
+ R_H8500_PCREL16);
fragP->fr_fix += disp_size + inst_size;
fragP->fr_var = 0;
segT seg AND
long size)
{
- return ((size + (1 << section_alignment[(int) seg]) - 1) & (-1 << section_alignment[(int) seg]));
+ return ((size + (1 << section_alignment[(int) seg]) - 1)
+ & (-1 << section_alignment[(int) seg]));
}
{
char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
- switch (fixP->fx_size)
+ if (fixP->fx_r_type == 0)
{
- case 1:
+ fixP->fx_r_type = fixP->fx_size == 4 ? R_H8500_IMM32 : R_H8500_IMM16;
+ }
+
+ switch (fixP->fx_r_type)
+ {
+
+ case R_H8500_IMM8:
+ case R_H8500_PCREL8:
*buf++ = val;
break;
- case 2:
+ case R_H8500_IMM16:
+ case R_H8500_LOW16:
+ case R_H8500_PCREL16:
*buf++ = (val >> 8);
*buf++ = val;
break;
- case 4:
+ case R_H8500_HIGH8:
+ *buf++ = val >> 16;
+ break;
+ case R_H8500_IMM24:
+ *buf++ = (val >> 16);
+ *buf++ = (val >> 8);
+ *buf++ = val;
+ break;
+ case R_H8500_IMM32:
*buf++ = (val >> 24);
*buf++ = (val >> 16);
*buf++ = (val >> 8);
register fragS *fragP;
register segT segment_type;
{
- int growth = 0;
- char *buffer = fragP->fr_fix + fragP->fr_literal;
int what = GET_WHAT (fragP->fr_subtype);
switch (fragP->fr_subtype)
{
- default:
- abort();
+ default:
+ abort ();
case C (BRANCH, UNDEF_BYTE_DISP):
case C (SCB_F, UNDEF_BYTE_DISP):
case C (SCB_TST, UNDEF_BYTE_DISP):
/* Got a symbol and it's defined in this segment, become byte
sized - maybe it will fix up */
fragP->fr_subtype = C (what, BYTE_DISP);
+ fragP->fr_var = md_relax_table[C (what, BYTE_DISP)].rlx_length;
}
else
{
/* Its got a segment, but its not ours, so it will always be long */
fragP->fr_subtype = C (what, UNDEF_WORD_DISP);
- fragP->fr_var = md_relax_table[C(what, WORD_DISP)].rlx_length;
- return md_relax_table[C(what, WORD_DISP)].rlx_length;
+ fragP->fr_var = md_relax_table[C (what, WORD_DISP)].rlx_length;
+ return md_relax_table[C (what, WORD_DISP)].rlx_length;
}
}
- return fragP->fr_var + fragP->fr_fix;
+ return fragP->fr_var;
}
/* Put number into target byte order */
{
}
+short
+tc_coff_fix2rtype (fix_ptr)
+ fixS *fix_ptr;
+{
+ if (fix_ptr->fx_r_type == RELOC_32)
+ {
+ /* cons likes to create reloc32's whatever the size of the reloc..
+ */
+ switch (fix_ptr->fx_size)
+ {
+ case 2:
+ return R_H8500_IMM16;
+ break;
+ case 1:
+ return R_H8500_IMM8;
+ break;
+ default:
+ abort ();
+ }
+ }
+ return fix_ptr->fx_r_type;
+}
+
void
tc_reloc_mangle (fix_ptr, intr, base)
fixS *fix_ptr;
intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base;
intr->r_offset = fix_ptr->fx_offset;
+ /* Turn the segment of the symbol into an offset. */
if (symbol_ptr)
- intr->r_symndx = symbol_ptr->sy_number;
+ {
+ symbolS *dot;
+
+ dot = segment_info[S_GET_SEGMENT (symbol_ptr)].dot;
+ if (dot)
+ {
+ /* intr->r_offset -=
+ segment_info[S_GET_SEGMENT(symbol_ptr)].scnhdr.s_paddr;*/
+ intr->r_offset += S_GET_VALUE (symbol_ptr);
+ intr->r_symndx = dot->sy_number;
+ }
+ else
+ {
+ intr->r_symndx = symbol_ptr->sy_number;
+ }
+
+ }
else
- intr->r_symndx = -1;
+ {
+ intr->r_symndx = -1;
+ }
}
/* end of tc-h8500.c */
+
+int
+start_label (ptr)
+ char *ptr;
+{
+ /* Check for :s.w */
+ if (isalpha (ptr[1]) && ptr[2] == '.')
+ return 0;
+ /* Check for :s */
+ if (isalpha (ptr[1]) && !isalpha (ptr[2]))
+ return 0;
+ return 1;
+}
projects / binutils-gdb.git / commitdiff