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-rw-r--r--gas/config/tc-h8500.c1633
1 files changed, 0 insertions, 1633 deletions
diff --git a/gas/config/tc-h8500.c b/gas/config/tc-h8500.c
deleted file mode 100644
index 9dec3e2e6a2..00000000000
--- a/gas/config/tc-h8500.c
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@@ -1,1633 +0,0 @@
-/* tc-h8500.c -- Assemble code for the Hitachi H8/500
- Copyright (C) 1993, 94, 95, 1998 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, 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
-
-/*
- Written By Steve Chamberlain
- sac@cygnus.com
- */
-
-#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[] = "!";
-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:
- pseudo-op name without dot
- function to call to execute this pseudo-op
- Integer arg to pass to the function
- */
-
-void cons ();
-
-const pseudo_typeS md_pseudo_table[] =
-{
- {"int", cons, 2},
- {"data.b", cons, 1},
- {"data.w", cons, 2},
- {"data.l", cons, 4},
- {"form", listing_psize, 0},
- {"heading", listing_title, 0},
- {"import", s_ignore, 0},
- {"page", listing_eject, 0},
- {"program", s_ignore, 0},
- {0, 0, 0}
-};
-
-const 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 */
-const char FLT_CHARS[] = "rRsSfFdDxXpP";
-
-#define C(a,b) ENCODE_RELAX(a,b)
-#define ENCODE_RELAX(what,length) (((what) << 2) + (length))
-
-#define GET_WHAT(x) ((x>>2))
-
-#define BYTE_DISP 1
-#define WORD_DISP 2
-#define UNDEF_BYTE_DISP 0
-#define UNDEF_WORD_DISP 3
-
-#define BRANCH 1
-#define SCB_F 2
-#define SCB_TST 3
-#define END 4
-
-#define BYTE_F 127
-#define BYTE_B -126
-#define WORD_F 32767
-#define WORD_B 32768
-
-relax_typeS md_relax_table[C (END, 0)];
-
-static struct hash_control *opcode_hash_control; /* Opcode mnemonics */
-
-/*
- 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
- */
-
-void
-md_begin ()
-{
- h8500_opcode_info *opcode;
- char prev_buffer[100];
- int idx = 0;
- register relax_typeS *table;
-
- opcode_hash_control = hash_new ();
- prev_buffer[0] = 0;
-
- /* Insert unique names into hash table */
- for (opcode = h8500_table; opcode->name; opcode++)
- {
- if (idx != opcode->idx)
- {
- hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
- idx++;
- }
- }
-
- /* Initialize the relax table. We use a local variable to avoid
- warnings about modifying a supposedly const data structure. */
- table = (relax_typeS *) md_relax_table;
- table[C (BRANCH, BYTE_DISP)].rlx_forward = BYTE_F;
- table[C (BRANCH, BYTE_DISP)].rlx_backward = BYTE_B;
- table[C (BRANCH, BYTE_DISP)].rlx_length = 2;
- table[C (BRANCH, BYTE_DISP)].rlx_more = C (BRANCH, WORD_DISP);
-
- table[C (BRANCH, WORD_DISP)].rlx_forward = WORD_F;
- table[C (BRANCH, WORD_DISP)].rlx_backward = WORD_B;
- table[C (BRANCH, WORD_DISP)].rlx_length = 3;
- table[C (BRANCH, WORD_DISP)].rlx_more = 0;
-
- table[C (SCB_F, BYTE_DISP)].rlx_forward = BYTE_F;
- table[C (SCB_F, BYTE_DISP)].rlx_backward = BYTE_B;
- table[C (SCB_F, BYTE_DISP)].rlx_length = 3;
- table[C (SCB_F, BYTE_DISP)].rlx_more = C (SCB_F, WORD_DISP);
-
- table[C (SCB_F, WORD_DISP)].rlx_forward = WORD_F;
- table[C (SCB_F, WORD_DISP)].rlx_backward = WORD_B;
- table[C (SCB_F, WORD_DISP)].rlx_length = 8;
- table[C (SCB_F, WORD_DISP)].rlx_more = 0;
-
- table[C (SCB_TST, BYTE_DISP)].rlx_forward = BYTE_F;
- table[C (SCB_TST, BYTE_DISP)].rlx_backward = BYTE_B;
- table[C (SCB_TST, BYTE_DISP)].rlx_length = 3;
- table[C (SCB_TST, BYTE_DISP)].rlx_more = C (SCB_TST, WORD_DISP);
-
- table[C (SCB_TST, WORD_DISP)].rlx_forward = WORD_F;
- table[C (SCB_TST, WORD_DISP)].rlx_backward = WORD_B;
- table[C (SCB_TST, WORD_DISP)].rlx_length = 10;
- table[C (SCB_TST, WORD_DISP)].rlx_more = 0;
-
-}
-
-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 */
-
-static expressionS displacement;/* displacement expression */
-static int displacement_size; /* and size if given */
-
-static int immediate_inpage;
-static expressionS immediate; /* immediate expression */
-static int immediate_size; /* and size if given */
-
-static expressionS absolute; /* absolute expression */
-static int absolute_size; /* and size if given */
-
-typedef struct
-{
- int type;
- int reg;
- expressionS exp;
- int page;
-}
-
-h8500_operand_info;
-
-/* try and parse a reg name, returns number of chars consumed */
-static int
-parse_reg (src, mode, reg)
- char *src;
- int *mode;
- int *reg;
-{
- char *end;
- int len;
-
- /* Cribbed from get_symbol_end(). */
- if (!is_name_beginner (*src) || *src == '\001')
- return 0;
- end = src+1;
- while (is_part_of_name (*end) || *end == '\001')
- end++;
- len = end - src;
-
- if (len == 2 && src[0] == 'r')
- {
- if (src[1] >= '0' && src[1] <= '7')
- {
- *mode = RN;
- *reg = (src[1] - '0');
- return len;
- }
- }
- if (len == 2 && src[0] == 's' && src[1] == 'p')
- {
- *mode = RN;
- *reg = 7;
- return len;
- }
- if (len == 3 && src[0] == 'c' && src[1] == 'c' && src[2] == 'r')
- {
- *mode = CRB;
- *reg = 1;
- return len;
- }
- if (len == 2 && src[0] == 's' && src[1] == 'r')
- {
- *mode = CRW;
- *reg = 0;
- return len;
- }
- if (len == 2 && src[0] == 'b' && src[1] == 'r')
- {
- *mode = CRB;
- *reg = 3;
- return len;
- }
- if (len == 2 && src[0] == 'e' && src[1] == 'p')
- {
- *mode = CRB;
- *reg = 4;
- return len;
- }
- if (len == 2 && src[0] == 'd' && src[1] == 'p')
- {
- *mode = CRB;
- *reg = 5;
- return len;
- }
- if (len == 2 && src[0] == 't' && src[1] == 'p')
- {
- *mode = CRB;
- *reg = 7;
- return len;
- }
- if (len == 2 && src[0] == 'f' && src[1] == 'p')
- {
- *mode = RN;
- *reg = 6;
- return len;
- }
- return 0;
-}
-
-static
-char *
-parse_exp (s, op, page)
- char *s;
- expressionS *op;
- int *page;
-{
- char *save;
- char *new;
-
- save = input_line_pointer;
-
- *page = 0;
- if (s[0] == '%')
- {
- if (s[1] == 'p' && s[2] == 'a' && s[3] == 'g' && s[4] == 'e')
- {
- s += 5;
- *page = 'p';
- }
- if (s[1] == 'h' && s[2] == 'i' && s[3] == '1' && s[4] == '6')
- {
- s += 5;
- *page = 'h';
- }
- else if (s[1] == 'o' && s[2] == 'f' && s[3] == 'f')
- {
- s += 4;
- *page = 'o';
- }
- }
-
- input_line_pointer = s;
-
- expression (op);
- if (op->X_op == O_absent)
- as_bad (_("missing operand"));
- new = input_line_pointer;
- input_line_pointer = save;
- return new;
-}
-
-typedef enum
- {
- exp_signed, exp_unsigned, exp_sandu
- } sign_type;
-
-
-static char *
-skip_colonthing (sign, ptr, exp, def, size8, size16, size24)
- sign_type sign;
- char *ptr;
- h8500_operand_info *exp;
- int def;
- int size8;
- int size16;
- int size24;
-{
- 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;
- }
- }
- else
- {
- if (exp->page == 'p')
- {
- exp->type = IMM8;
- }
- else if (exp->page == 'h')
- {
- exp->type = IMM16;
- }
- else
- {
- /* Let's work out the size from the context */
- int n = exp->exp.X_add_number;
- if (size8
- && exp->exp.X_op == O_constant
- && ((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;
-{
- 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] == '-')
- {
- 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"));
- }
- }
- if (src[idx] == ',')
- idx++;
- }
- idx++;
- op->exp.X_add_symbol = 0;
- op->exp.X_op_symbol = 0;
- op->exp.X_add_number = mask;
- op->exp.X_op = O_constant;
- op->exp.X_unsigned = 1;
- op->type = IMM8;
- return idx;
-
-}
-
-/* The many forms of operand:
-
- Rn Register direct
- @Rn Register indirect
- @(disp[:size], Rn) Register indirect with displacement
- @Rn+
- @-Rn
- @aa[:size] absolute
- #xx[:size] immediate data
-
- */
-
-static void
-get_operand (ptr, op, ispage)
- char **ptr;
- h8500_operand_info *op;
- char ispage;
-{
- char *src = *ptr;
- int mode;
- unsigned int num;
- unsigned int len;
- op->page = 0;
- if (src[0] == '(' && src[1] == 'r')
- {
- /* This is a register list */
- *ptr = src + parse_reglist (src, op);
- return;
- }
-
- len = parse_reg (src, &op->type, &op->reg);
-
- if (len)
- {
- *ptr = src + len;
- return;
- }
-
- if (*src == '@')
- {
- src++;
- if (*src == '-')
- {
- src++;
- len = parse_reg (src, &mode, &num);
- if (len == 0)
- {
- /* Oops, not a reg after all, must be ordinary exp */
- src--;
- /* must be a symbol */
- *ptr = skip_colonthing (exp_unsigned, src,
- op, ABS16, ABS8, ABS16, ABS24);
- return;
- }
-
- op->type = RNDEC;
- op->reg = num;
- *ptr = src + len;
- return;
- }
- if (*src == '(')
- {
- /* Disp */
- src++;
-
- src = skip_colonthing (exp_signed, src,
- op, RNIND_D16, RNIND_D8, RNIND_D16, 0);
-
- if (*src != ',')
- {
- as_bad (_("expected @(exp, Rn)"));
- return;
- }
- src++;
- len = parse_reg (src, &mode, &op->reg);
- if (len == 0 || mode != RN)
- {
- as_bad (_("expected @(exp, Rn)"));
- return;
- }
- src += len;
- if (*src != ')')
- {
- as_bad (_("expected @(exp, Rn)"));
- return;
- }
- *ptr = src + 1;
- return;
- }
- len = parse_reg (src, &mode, &num);
-
- if (len)
- {
- src += len;
- if (*src == '+')
- {
- src++;
- if (mode != RN)
- {
- as_bad (_("@Rn+ needs word register"));
- return;
- }
- op->type = RNINC;
- op->reg = num;
- *ptr = src;
- return;
- }
- if (mode != RN)
- {
- as_bad (_("@Rn needs word register"));
- return;
- }
- op->type = RNIND;
- op->reg = num;
- *ptr = src;
- return;
- }
- else
- {
- /* must be a symbol */
- *ptr =
- skip_colonthing (exp_unsigned, src, op,
- ispage ? ABS24 : ABS16, ABS8, ABS16, ABS24);
- return;
- }
- }
-
- if (*src == '#')
- {
- src++;
- *ptr = skip_colonthing (exp_sandu, src, op, IMM16, IMM8, IMM16, ABS24);
- return;
- }
- else
- {
- *ptr = skip_colonthing (exp_signed, src, op,
- ispage ? ABS24 : PCREL8, PCREL8, PCREL16, ABS24);
- }
-}
-
-static
-char *
-get_operands (info, args, operand)
- h8500_opcode_info *info;
- char *args;
- h8500_operand_info *operand;
-
-{
- char *ptr = args;
-
- switch (info->nargs)
- {
- case 0:
- operand[0].type = 0;
- operand[1].type = 0;
- break;
-
- case 1:
- ptr++;
- get_operand (&ptr, operand + 0, info->name[0] == 'p');
- operand[1].type = 0;
- break;
-
- case 2:
- ptr++;
- get_operand (&ptr, operand + 0, 0);
- if (*ptr == ',')
- ptr++;
- get_operand (&ptr, operand + 1, 0);
- break;
-
- default:
- abort ();
- }
-
- return ptr;
-}
-
-/* Passed a pointer to a list of opcodes which use different
- addressing modes, return the opcode which matches the opcodes
- provided
- */
-
-int pcrel8; /* Set when we've seen a pcrel operand */
-
-static
-h8500_opcode_info *
-get_specific (opcode, operands)
- h8500_opcode_info *opcode;
- h8500_operand_info *operands;
-{
- h8500_opcode_info *this_try = opcode;
- int found = 0;
- unsigned int noperands = opcode->nargs;
-
- unsigned int this_index = opcode->idx;
-
- while (this_index == opcode->idx && !found)
- {
- unsigned int i;
-
- this_try = opcode++;
-
- /* look at both operands needed by the opcodes and provided by
- the user*/
- for (i = 0; i < noperands; i++)
- {
- h8500_operand_info *user = operands + i;
-
- switch (this_try->arg_type[i])
- {
- case FPIND_D8:
- /* Opcode needs (disp:8,fp) */
- if (user->type == RNIND_D8 && user->reg == 6)
- {
- displacement = user->exp;
- continue;
- }
- break;
- case RDIND_D16:
- if (user->type == RNIND_D16)
- {
- displacement = user->exp;
- rd = user->reg;
- continue;
- }
- break;
- case RDIND_D8:
- if (user->type == RNIND_D8)
- {
- displacement = user->exp;
- rd = user->reg;
- continue;
- }
- break;
- case RNIND_D16:
- case RNIND_D8:
- if (user->type == this_try->arg_type[i])
- {
- displacement = user->exp;
- rn = user->reg;
- continue;
- }
- break;
-
- case SPDEC:
- if (user->type == RNDEC && user->reg == 7)
- {
- continue;
- }
- break;
- case SPINC:
- if (user->type == RNINC && user->reg == 7)
- {
- continue;
- }
- break;
- case ABS16:
- if (user->type == ABS16)
- {
- absolute = user->exp;
- continue;
- }
- break;
- case ABS8:
- if (user->type == ABS8)
- {
- absolute = user->exp;
- continue;
- }
- break;
- case ABS24:
- if (user->type == ABS24)
- {
- absolute = user->exp;
- continue;
- }
- break;
-
- case CRB:
- if ((user->type == CRB || user->type == CR) && user->reg != 0)
- {
- crb = user->reg;
- continue;
- }
- break;
- case CRW:
- if ((user->type == CRW || user->type == CR) && user->reg == 0)
- {
- crw = user->reg;
- continue;
- }
- break;
- case DISP16:
- if (user->type == DISP16)
- {
- displacement = user->exp;
- continue;
- }
- break;
- case DISP8:
- if (user->type == DISP8)
- {
- displacement = user->exp;
- continue;
- }
- break;
- case FP:
- if (user->type == RN && user->reg == 6)
- {
- continue;
- }
- break;
- case PCREL16:
- if (user->type == PCREL16)
- {
- displacement = user->exp;
- continue;
- }
- break;
- case PCREL8:
- if (user->type == PCREL8)
- {
- displacement = user->exp;
- pcrel8 = 1;
- continue;
- }
- break;
-
- case IMM16:
- if (user->type == IMM16
- || user->type == IMM8)
- {
- immediate_inpage = user->page;
- immediate = user->exp;
- continue;
- }
- break;
- case RLIST:
- case IMM8:
- if (user->type == IMM8)
- {
- immediate_inpage = user->page;
- immediate = user->exp;
- continue;
- }
- break;
- case IMM4:
- if (user->type == IMM8)
- {
- immediate_inpage = user->page;
- immediate = user->exp;
- continue;
- }
- break;
- case QIM:
- if (user->type == IMM8
- && user->exp.X_op == O_constant
- &&
- (user->exp.X_add_number == -2
- || user->exp.X_add_number == -1
- || user->exp.X_add_number == 1
- || user->exp.X_add_number == 2))
- {
- immediate_inpage = user->page;
- immediate = user->exp;
- continue;
- }
- break;
- case RD:
- if (user->type == RN)
- {
- rd = user->reg;
- continue;
- }
- break;
- case RS:
- if (user->type == RN)
- {
- rs = user->reg;
- continue;
- }
- break;
- case RDIND:
- if (user->type == RNIND)
- {
- rd = user->reg;
- continue;
-
- }
- break;
- case RNINC:
- case RNIND:
- case RNDEC:
- case RN:
-
- if (user->type == this_try->arg_type[i])
- {
- rn = user->reg;
- continue;
- }
- break;
- case SP:
- if (user->type == RN && user->reg == 7)
- {
- continue;
- }
- break;
- default:
- printf (_("unhandled %d\n"), this_try->arg_type[i]);
- break;
- }
-
- /* If we get here this didn't work out */
- goto fail;
- }
- found = 1;
- fail:;
-
- }
-
- if (found)
- return this_try;
- else
- return 0;
-}
-
-int
-check (operand, low, high)
- expressionS *operand;
- int low;
- int high;
-{
- if (operand->X_op != O_constant
- || operand->X_add_number < low
- || operand->X_add_number > high)
- {
- as_bad (_("operand must be absolute in range %d..%d"), low, high);
- }
- return operand->X_add_number;
-}
-
-static
-void
-insert (output, index, exp, reloc, pcrel)
- char *output;
- int index;
- expressionS *exp;
- int reloc;
- int pcrel;
-{
- fix_new_exp (frag_now,
- output - frag_now->fr_literal + index,
- 4, /* always say size is 4, but we know better */
- exp,
- pcrel,
- reloc);
-}
-
-void
-build_relaxable_instruction (opcode, operand)
- h8500_opcode_info *opcode;
- h8500_operand_info *operand;
-{
- /* All relaxable instructions start life as two bytes but can become
- three bytes long if a lonely branch and up to 9 bytes if long scb
- */
- char *p;
- int len;
- int type;
-
- if (opcode->bytes[0].contents == 0x01)
- {
- type = SCB_F;
- }
- else if (opcode->bytes[0].contents == 0x06
- || opcode->bytes[0].contents == 0x07)
- {
- type = SCB_TST;
- }
- else
- {
- type = BRANCH;
- }
-
- p = frag_var (rs_machine_dependent,
- md_relax_table[C (type, WORD_DISP)].rlx_length,
- len = md_relax_table[C (type, BYTE_DISP)].rlx_length,
- C (type, UNDEF_BYTE_DISP),
- displacement.X_add_symbol,
- displacement.X_add_number,
- 0);
-
- p[0] = opcode->bytes[0].contents;
- if (type != BRANCH)
- {
- p[1] = opcode->bytes[1].contents | rs;
- }
-}
-
-/* Now we know what sort of opcodes it is, lets build the bytes -
- */
-static void
-build_bytes (opcode, operand)
- h8500_opcode_info *opcode;
- h8500_operand_info *operand;
-
-{
- int index;
-
- if (pcrel8)
- {
- pcrel8 = 0;
- build_relaxable_instruction (opcode, operand);
- }
- else
- {
- char *output = frag_more (opcode->length);
-
- memset (output, 0, opcode->length);
- for (index = 0; index < opcode->length; index++)
- {
- output[index] = opcode->bytes[index].contents;
-
- switch (opcode->bytes[index].insert)
- {
- default:
- printf (_("failed for %d\n"), opcode->bytes[index].insert);
- break;
- case 0:
- break;
- case RN:
- output[index] |= rn;
- break;
- case RD:
- case RDIND:
-
- output[index] |= rd;
- break;
- case RS:
- output[index] |= rs;
- break;
- case DISP16:
- insert (output, index, &displacement, R_H8500_IMM16, 0);
- index++;
- break;
- case DISP8:
- case FPIND_D8:
- insert (output, index, &displacement, R_H8500_IMM8, 0);
- break;
-
- case IMM16:
- {
- int p;
- switch (immediate_inpage) {
- case 'p':
- p = R_H8500_HIGH16;
- break;
- case 'h':
- p = R_H8500_HIGH16;
- break;
- default:
- p = R_H8500_IMM16;
- break;
- }
-
- insert (output, index, &immediate,p, 0);
- }
-
- index++;
- break;
- case RLIST:
- case 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 (output, index, &displacement, R_H8500_PCREL16, 1);
- index++;
- break;
- case PCREL8:
- 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 (output, index, &absolute, R_H8500_IMM16, 0);
- index++;
- break;
- case ABS8:
- insert (output, index, &absolute, R_H8500_IMM8, 0);
- break;
- case QIM:
- switch (immediate.X_add_number)
- {
- case -2:
- output[index] |= 0x5;
- break;
- case -1:
- output[index] |= 0x4;
- break;
- case 1:
- output[index] |= 0;
- break;
- case 2:
- output[index] |= 1;
- break;
- }
- break;
- }
- }
- }
-}
-
-/* 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;
- h8500_operand_info operand[2];
- h8500_opcode_info *opcode;
- h8500_opcode_info *prev_opcode;
- char name[11];
-
- int nlen = 0;
-
- /* Drop leading whitespace */
- while (*str == ' ')
- str++;
-
- /* find the op code end */
- for (op_start = op_end = str;
- *op_end &&
- !is_end_of_line[*op_end] && *op_end != ' ';
- op_end++)
- {
- if ( /**op_end != '.'
- && *op_end != ':'
- && */ nlen < 10)
- {
- name[nlen++] = *op_end;
- }
- }
- name[nlen] = 0;
-
- if (op_end == op_start)
- {
- as_bad (_("can't find opcode "));
- }
-
- opcode = (h8500_opcode_info *) hash_find (opcode_hash_control, name);
-
- if (opcode == NULL)
- {
- as_bad (_("unknown opcode"));
- return;
- }
-
- get_operands (opcode, op_end, operand);
- prev_opcode = opcode;
-
- opcode = get_specific (opcode, operand);
-
- if (opcode == 0)
- {
- /* Couldn't find an opcode which matched the operands */
- char *where = frag_more (2);
-
- where[0] = 0x0;
- where[1] = 0x0;
- as_bad (_("invalid operands for opcode"));
- return;
- }
-
- build_bytes (opcode, operand);
-
-}
-
-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"));
-}
-
-/* Various routines to kill one day */
-/* Equal to MAX_PRECISION in atof-ieee.c */
-#define MAX_LITTLENUMS 6
-
-/* Turn a string in input_line_pointer into a floating point constant of type
- type, and store the appropriate bytes in *litP. The number of LITTLENUMS
- emitted is stored in *sizeP . An error message is returned, or NULL on OK.
- */
-char *
-md_atof (type, litP, sizeP)
- char type;
- char *litP;
- int *sizeP;
-{
- int prec;
- LITTLENUM_TYPE words[MAX_LITTLENUMS];
- LITTLENUM_TYPE *wordP;
- char *t;
- char *atof_ieee ();
-
- switch (type)
- {
- case 'f':
- case 'F':
- case 's':
- case 'S':
- prec = 2;
- break;
-
- case 'd':
- case 'D':
- case 'r':
- case 'R':
- prec = 4;
- break;
-
- case 'x':
- case 'X':
- prec = 6;
- break;
-
- case 'p':
- case 'P':
- prec = 6;
- break;
-
- default:
- *sizeP = 0;
- return _("Bad call to MD_ATOF()");
- }
- t = atof_ieee (input_line_pointer, type, words);
- if (t)
- input_line_pointer = t;
-
- *sizeP = prec * sizeof (LITTLENUM_TYPE);
- for (wordP = words; prec--;)
- {
- md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE));
- litP += sizeof (LITTLENUM_TYPE);
- }
- return 0;
-}
-
-CONST char *md_shortopts = "";
-struct option md_longopts[] = {
- {NULL, no_argument, NULL, 0}
-};
-size_t md_longopts_size = sizeof(md_longopts);
-
-int
-md_parse_option (c, arg)
- int c;
- char *arg;
-{
- return 0;
-}
-
-void
-md_show_usage (stream)
- FILE *stream;
-{
-}
-
-void
-tc_aout_fix_to_chars ()
-{
- printf (_("call to tc_aout_fix_to_chars \n"));
- abort ();
-}
-
-static
-void
-wordify_scb (buffer, disp_size, inst_size)
- char *buffer;
- int *disp_size;
- int *inst_size;
-{
- int rn = buffer[1] & 0x7;
-
- switch (buffer[0])
- {
- case 0x0e: /* BSR */
- case 0x20:
- case 0x21:
- case 0x22:
- case 0x23:
- case 0x24:
- case 0x25:
- case 0x26:
- case 0x27:
- case 0x28:
- case 0x29:
- case 0x2a:
- case 0x2b:
- case 0x2c:
- case 0x2d:
- case 0x2e:
- case 0x2f:
- buffer[0] |= 0x10;
- buffer[1] = 0;
- buffer[2] = 0;
- *disp_size = 2;
- *inst_size = 1;
- return;
- default:
- abort ();
-
- case 0x01:
- *inst_size = 6;
- *disp_size = 2;
- break;
- case 0x06:
- *inst_size = 8;
- *disp_size = 2;
-
- *buffer++ = 0x26; /* bne + 8 */
- *buffer++ = 0x08;
- break;
- case 0x07:
- *inst_size = 8;
- *disp_size = 2;
- *buffer++ = 0x27; /* bne + 8 */
- *buffer++ = 0x08;
- break;
-
- }
- *buffer++ = 0xa8 | rn; /* addq -1,rn */
- *buffer++ = 0x0c;
- *buffer++ = 0x04; /* cmp #0xff:8, rn */
- *buffer++ = 0xff;
- *buffer++ = 0x70 | rn;
- *buffer++ = 0x36; /* bne ... */
- *buffer++ = 0;
- *buffer++ = 0;
-}
-
-/*
-called after relaxing, change the frags so they know how big they are
-*/
-void
-md_convert_frag (headers, seg, fragP)
- object_headers *headers;
- segT seg;
- fragS *fragP;
-{
- int disp_size = 0;
- int inst_size = 0;
- char *buffer = fragP->fr_fix + fragP->fr_literal;
-
- switch (fragP->fr_subtype)
- {
- case C (BRANCH, BYTE_DISP):
- disp_size = 1;
- inst_size = 1;
- break;
-
- case C (SCB_F, BYTE_DISP):
- case C (SCB_TST, BYTE_DISP):
- disp_size = 1;
- inst_size = 2;
- break;
-
- /* Branches to a known 16 bit displacement */
-
- /* Turn on the 16bit bit */
- case C (BRANCH, WORD_DISP):
- case C (SCB_F, WORD_DISP):
- case C (SCB_TST, WORD_DISP):
- wordify_scb (buffer, &disp_size, &inst_size);
- break;
-
- case C (BRANCH, UNDEF_WORD_DISP):
- case C (SCB_F, UNDEF_WORD_DISP):
- case C (SCB_TST, UNDEF_WORD_DISP):
- /* This tried to be relaxed, but didn't manage it, it now needs a
- fix */
- wordify_scb (buffer, &disp_size, &inst_size);
-
- /* Make a reloc */
- fix_new (fragP,
- fragP->fr_fix + inst_size,
- 4,
- fragP->fr_symbol,
- fragP->fr_offset,
- 0,
- R_H8500_PCREL16);
-
- fragP->fr_fix += disp_size + inst_size;
- fragP->fr_var = 0;
- return;
- break;
- default:
- abort ();
- }
- if (inst_size)
- {
- /* Get the address of the end of the instruction */
- int next_inst = fragP->fr_fix + fragP->fr_address + disp_size + inst_size;
- int targ_addr = (S_GET_VALUE (fragP->fr_symbol) +
- fragP->fr_offset);
- int disp = targ_addr - next_inst;
-
- md_number_to_chars (buffer + inst_size, disp, disp_size);
- fragP->fr_fix += disp_size + inst_size;
- fragP->fr_var = 0;
- }
-}
-
-valueT
-md_section_align (seg, size)
- segT seg ;
- valueT size;
-{
- return ((size + (1 << section_alignment[(int) seg]) - 1)
- & (-1 << section_alignment[(int) seg]));
-
-}
-
-void
-md_apply_fix (fixP, val)
- fixS *fixP;
- long val;
-{
- char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
-
- if (fixP->fx_r_type == 0)
- {
- 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 R_H8500_IMM16:
- case R_H8500_LOW16:
- case R_H8500_PCREL16:
- *buf++ = (val >> 8);
- *buf++ = val;
- break;
- case R_H8500_HIGH8:
- *buf++ = val >> 16;
- break;
- case R_H8500_HIGH16:
- *buf++ = val >> 24;
- *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);
- *buf++ = val;
- break;
- default:
- abort ();
-
- }
-}
-
-/*
-called just before address relaxation, return the length
-by which a fragment must grow to reach it's destination
-*/
-int
-md_estimate_size_before_relax (fragP, segment_type)
- register fragS *fragP;
- register segT segment_type;
-{
- int what = GET_WHAT (fragP->fr_subtype);
-
- switch (fragP->fr_subtype)
- {
- default:
- abort ();
- case C (BRANCH, UNDEF_BYTE_DISP):
- case C (SCB_F, UNDEF_BYTE_DISP):
- case C (SCB_TST, UNDEF_BYTE_DISP):
- /* used to be a branch to somewhere which was unknown */
- if (S_GET_SEGMENT (fragP->fr_symbol) == segment_type)
- {
- /* 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;
- }
- }
- return fragP->fr_var;
-}
-
-/* Put number into target byte order */
-
-void
-md_number_to_chars (ptr, use, nbytes)
- char *ptr;
- valueT use;
- int nbytes;
-{
- number_to_chars_bigendian (ptr, use, nbytes);
-}
-
-long
-md_pcrel_from (fixP)
- fixS *fixP;
-{
- return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address;
-}
-
-/*ARGSUSED*/
-void
-tc_coff_symbol_emit_hook (ignore)
- symbolS *ignore;
-{
-}
-
-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;
- struct internal_reloc *intr;
- bfd_vma base;
-
-{
- symbolS *symbol_ptr;
-
- symbol_ptr = fix_ptr->fx_addsy;
-
- /* If this relocation is attached to a symbol then it's ok
- to output it */
- 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:
- intr->r_type = R_IMM16;
- break;
- case 1:
- intr->r_type = R_IMM8;
- break;
- default:
- abort ();
- }
- }
- else
- {
- intr->r_type = fix_ptr->fx_r_type;
- }
-
- 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)
- {
- 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;
- }
-
-}
-
-
-
-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;
-}
-
-
-int
-tc_coff_sizemachdep (frag)
- fragS *frag;
-{
- return md_relax_table[frag->fr_subtype].rlx_length;
-}
-
-/* end of tc-h8500.c */
-
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