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Diffstat (limited to 'binutils-2.17/gas/config/tc-z8k.c')
-rw-r--r--binutils-2.17/gas/config/tc-z8k.c1597
1 files changed, 0 insertions, 1597 deletions
diff --git a/binutils-2.17/gas/config/tc-z8k.c b/binutils-2.17/gas/config/tc-z8k.c
deleted file mode 100644
index 355ac12c..00000000
--- a/binutils-2.17/gas/config/tc-z8k.c
+++ /dev/null
@@ -1,1597 +0,0 @@
-/* tc-z8k.c -- Assemble code for the Zilog Z800n
- Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001, 2002, 2003,
- 2005 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, 51 Franklin Street - Fifth Floor, Boston, MA
- 02110-1301, USA. */
-
-/* Written By Steve Chamberlain <sac@cygnus.com>. */
-
-#include <stdio.h>
-
-#include "as.h"
-#include "bfd.h"
-#include "safe-ctype.h"
-#define DEFINE_TABLE
-#include "opcodes/z8k-opc.h"
-
-const char comment_chars[] = "!";
-const char line_comment_chars[] = "#";
-const char line_separator_chars[] = ";";
-
-extern int machine;
-extern int coff_flags;
-int segmented_mode;
-
-/* This is non-zero if target was set from the command line. */
-static int z8k_target_from_cmdline;
-
-static void
-s_segm (int segm)
-{
- if (segm)
- {
- segmented_mode = 1;
- bfd_set_arch_mach (stdoutput, TARGET_ARCH, bfd_mach_z8001);
- }
- else
- {
- segmented_mode = 0;
- bfd_set_arch_mach (stdoutput, TARGET_ARCH, bfd_mach_z8002);
- }
-}
-
-static void
-even (int ignore ATTRIBUTE_UNUSED)
-{
- frag_align (1, 0, 0);
- record_alignment (now_seg, 1);
-}
-
-static int
-tohex (int c)
-{
- if (ISDIGIT (c))
- return c - '0';
- if (ISLOWER (c))
- return c - 'a' + 10;
- return c - 'A' + 10;
-}
-
-static void
-sval (int ignore ATTRIBUTE_UNUSED)
-{
- SKIP_WHITESPACE ();
- if (*input_line_pointer == '\'')
- {
- int c;
- input_line_pointer++;
- c = *input_line_pointer++;
- while (c != '\'')
- {
- if (c == '%')
- {
- c = (tohex (input_line_pointer[0]) << 4)
- | tohex (input_line_pointer[1]);
- input_line_pointer += 2;
- }
- FRAG_APPEND_1_CHAR (c);
- c = *input_line_pointer++;
- }
- demand_empty_rest_of_line ();
- }
-}
-
-/* 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[] = {
- {"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},
- {"z8001" , s_segm , 1},
- {"z8002" , s_segm , 0},
-
- {"segm" , s_segm , 1},
- {"unsegm" , s_segm , 0},
- {"unseg" , s_segm , 0},
- {"name" , s_app_file , 0},
- {"global" , s_globl , 0},
- {"wval" , cons , 2},
- {"lval" , cons , 4},
- {"bval" , cons , 1},
- {"sval" , sval , 0},
- {"rsect" , obj_coff_section, 0},
- {"sect" , obj_coff_section, 0},
- {"block" , s_space , 0},
- {"even" , even , 0},
- {0 , 0 , 0}
-};
-
-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";
-
-/* Opcode mnemonics. */
-static struct hash_control *opcode_hash_control;
-
-void
-md_begin (void)
-{
- const opcode_entry_type *opcode;
- int idx = -1;
-
- opcode_hash_control = hash_new ();
-
- for (opcode = z8k_table; opcode->name; opcode++)
- {
- /* Only enter unique codes into the table. */
- if (idx != opcode->idx)
- hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
- idx = opcode->idx;
- }
-
- /* Default to z8002. */
- if (! z8k_target_from_cmdline)
- s_segm (0);
-
- /* Insert the pseudo ops, too. */
- for (idx = 0; md_pseudo_table[idx].poc_name; idx++)
- {
- opcode_entry_type *fake_opcode;
- fake_opcode = (opcode_entry_type *) malloc (sizeof (opcode_entry_type));
- fake_opcode->name = md_pseudo_table[idx].poc_name;
- fake_opcode->func = (void *) (md_pseudo_table + idx);
- fake_opcode->opcode = 250;
- hash_insert (opcode_hash_control, fake_opcode->name, fake_opcode);
- }
-}
-
-typedef struct z8k_op {
- /* CLASS_REG_xxx. */
- int regsize;
-
- /* 0 .. 15. */
- unsigned int reg;
-
- int mode;
-
- /* Any other register associated with the mode. */
- unsigned int x_reg;
-
- /* Any expression. */
- expressionS exp;
-} op_type;
-
-static expressionS *da_operand;
-static expressionS *imm_operand;
-
-static int reg[16];
-static int the_cc;
-static int the_ctrl;
-static int the_flags;
-static int the_interrupt;
-
-static char *
-whatreg (unsigned int *reg, char *src)
-{
- if (ISDIGIT (src[1]))
- {
- *reg = (src[0] - '0') * 10 + src[1] - '0';
- return src + 2;
- }
- else
- {
- *reg = (src[0] - '0');
- return src + 1;
- }
-}
-
-/* Parse operands
-
- rh0-rh7, rl0-rl7
- r0-r15
- rr0-rr14
- rq0--rq12
- WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
- r0l,r0h,..r7l,r7h
- @WREG
- @WREG+
- @-WREG
- #const
-*/
-
-/* Try to parse a reg name. Return a pointer to the first character
- in SRC after the reg name. */
-
-static char *
-parse_reg (char *src, int *mode, unsigned int *reg)
-{
- char *res = 0;
- char regno;
-
- /* Check for stack pointer "sp" alias. */
- if ((src[0] == 's' || src[0] == 'S')
- && (src[1] == 'p' || src[1] == 'P')
- && (src[2] == 0 || src[2] == ','))
- {
- if (segmented_mode)
- {
- *mode = CLASS_REG_LONG;
- *reg = 14;
- }
- else
- {
- *mode = CLASS_REG_WORD;
- *reg = 15;
- }
- return src + 2;
- }
-
- if (src[0] == 'r' || src[0] == 'R')
- {
- if (src[1] == 'r' || src[1] == 'R')
- {
- if (src[2] < '0' || src[2] > '9')
- return res; /* Assume no register name but a label starting with 'rr'. */
- *mode = CLASS_REG_LONG;
- res = whatreg (reg, src + 2);
- regno = *reg;
- if (regno > 14)
- as_bad (_("register rr%d out of range"), regno);
- if (regno & 1)
- as_bad (_("register rr%d does not exist"), regno);
- }
- else if (src[1] == 'h' || src[1] == 'H')
- {
- if (src[2] < '0' || src[2] > '9')
- return res; /* Assume no register name but a label starting with 'rh'. */
- *mode = CLASS_REG_BYTE;
- res = whatreg (reg, src + 2);
- regno = *reg;
- if (regno > 7)
- as_bad (_("register rh%d out of range"), regno);
- }
- else if (src[1] == 'l' || src[1] == 'L')
- {
- if (src[2] < '0' || src[2] > '9')
- return res; /* Assume no register name but a label starting with 'rl'. */
- *mode = CLASS_REG_BYTE;
- res = whatreg (reg, src + 2);
- regno = *reg;
- if (regno > 7)
- as_bad (_("register rl%d out of range"), regno);
- *reg += 8;
- }
- else if (src[1] == 'q' || src[1] == 'Q')
- {
- if (src[2] < '0' || src[2] > '9')
- return res; /* Assume no register name but a label starting with 'rq'. */
- *mode = CLASS_REG_QUAD;
- res = whatreg (reg, src + 2);
- regno = *reg;
- if (regno > 12)
- as_bad (_("register rq%d out of range"), regno);
- if (regno & 3)
- as_bad (_("register rq%d does not exist"), regno);
- }
- else
- {
- if (src[1] < '0' || src[1] > '9')
- return res; /* Assume no register name but a label starting with 'r'. */
- *mode = CLASS_REG_WORD;
- res = whatreg (reg, src + 1);
- regno = *reg;
- if (regno > 15)
- as_bad (_("register r%d out of range"), regno);
- }
- }
- return res;
-}
-
-static char *
-parse_exp (char *s, expressionS *op)
-{
- char *save = input_line_pointer;
- char *new;
-
- 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;
-}
-
-/* The many forms of operand:
-
- <rb>
- <r>
- <rr>
- <rq>
- @r
- #exp
- exp
- exp(r)
- r(#exp)
- r(r)
- */
-
-static char *
-checkfor (char *ptr, char what)
-{
- if (*ptr == what)
- ptr++;
- else
- as_bad (_("expected %c"), what);
-
- return ptr;
-}
-
-/* Make sure the mode supplied is the size of a word. */
-
-static void
-regword (int mode, char *string)
-{
- int ok;
-
- ok = CLASS_REG_WORD;
- if (ok != mode)
- {
- as_bad (_("register is wrong size for a word %s"), string);
- }
-}
-
-/* Make sure the mode supplied is the size of an address. */
-
-static void
-regaddr (int mode, char *string)
-{
- int ok;
-
- ok = segmented_mode ? CLASS_REG_LONG : CLASS_REG_WORD;
- if (ok != mode)
- {
- as_bad (_("register is wrong size for address %s"), string);
- }
-}
-
-struct ctrl_names {
- int value;
- char *name;
-};
-
-static struct ctrl_names ctrl_table[] = {
- { 0x1, "flags" }, /* ldctlb only. */
- { 0x2, "fcw" }, /* ldctl only. Applies to all remaining control registers. */
- { 0x3, "refresh" },
- { 0x4, "psapseg" },
- { 0x5, "psapoff" },
- { 0x5, "psap" },
- { 0x6, "nspseg" },
- { 0x7, "nspoff" },
- { 0x7, "nsp" },
- { 0 , 0 }
-};
-
-static void
-get_ctrl_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
-{
- char *src = *ptr;
- int i, l;
-
- while (*src == ' ')
- src++;
-
- mode->mode = CLASS_CTRL;
- for (i = 0; ctrl_table[i].name; i++)
- {
- l = strlen (ctrl_table[i].name);
- if (! strncasecmp (ctrl_table[i].name, src, l))
- {
- the_ctrl = ctrl_table[i].value;
- if (*(src + l) && *(src + l) != ',')
- break;
- *ptr = src + l; /* Valid control name found: "consume" it. */
- return;
- }
- }
- the_ctrl = 0;
-}
-
-struct flag_names {
- int value;
- char *name;
-};
-
-static struct flag_names flag_table[] = {
- { 0x1, "P" },
- { 0x1, "V" },
- { 0x2, "S" },
- { 0x4, "Z" },
- { 0x8, "C" },
- { 0x0, "+" },
- { 0x0, "," },
- { 0, 0 }
-};
-
-static void
-get_flags_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
-{
- char *src = *ptr;
- char c;
- int i;
- int j;
-
- while (*src == ' ')
- src++;
-
- mode->mode = CLASS_FLAGS;
- the_flags = 0;
- for (j = 0; j <= 9; j++)
- {
- if (!src[j])
- goto done;
- c = TOUPPER(src[j]);
- for (i = 0; flag_table[i].name; i++)
- {
- if (flag_table[i].name[0] == c)
- {
- the_flags = the_flags | flag_table[i].value;
- goto match;
- }
- }
- goto done;
- match:
- ;
- }
- done:
- *ptr = src + j;
-}
-
-struct interrupt_names {
- int value;
- char *name;
-};
-
-static struct interrupt_names intr_table[] = {
- { 0x1, "nvi" },
- { 0x2, "vi" },
- { 0x3, "both" },
- { 0x3, "all" },
- { 0, 0 }
-};
-
-static void
-get_interrupt_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
-{
- char *src = *ptr;
- int i, l;
-
- while (*src == ' ')
- src++;
-
- mode->mode = CLASS_IMM;
- the_interrupt = 0;
-
- while (*src)
- {
- for (i = 0; intr_table[i].name; i++)
- {
- l = strlen (intr_table[i].name);
- if (! strncasecmp (intr_table[i].name, src, l))
- {
- the_interrupt |= intr_table[i].value;
- if (*(src + l) && *(src + l) != ',')
- {
- *ptr = src + l;
- invalid:
- as_bad (_("unknown interrupt %s"), src);
- while (**ptr && ! is_end_of_line[(unsigned char) **ptr])
- (*ptr)++; /* Consume rest of line. */
- return;
- }
- src += l;
- if (! *src)
- {
- *ptr = src;
- return;
- }
- }
- }
- if (*src == ',')
- src++;
- else
- {
- *ptr = src;
- goto invalid;
- }
- }
-
- /* No interrupt type specified, opcode won't do anything. */
- as_warn (_("opcode has no effect"));
- the_interrupt = 0x0;
-}
-
-struct cc_names {
- int value;
- char *name;
-};
-
-static struct cc_names table[] = {
- { 0x0, "f" },
- { 0x1, "lt" },
- { 0x2, "le" },
- { 0x3, "ule" },
- { 0x4, "ov/pe" },
- { 0x4, "ov" },
- { 0x4, "pe/ov" },
- { 0x4, "pe" },
- { 0x5, "mi" },
- { 0x6, "eq" },
- { 0x6, "z" },
- { 0x7, "c/ult" },
- { 0x7, "c" },
- { 0x7, "ult/c" },
- { 0x7, "ult" },
- { 0x8, "t" },
- { 0x9, "ge" },
- { 0xa, "gt" },
- { 0xb, "ugt" },
- { 0xc, "nov/po" },
- { 0xc, "nov" },
- { 0xc, "po/nov" },
- { 0xc, "po" },
- { 0xd, "pl" },
- { 0xe, "ne" },
- { 0xe, "nz" },
- { 0xf, "nc/uge" },
- { 0xf, "nc" },
- { 0xf, "uge/nc" },
- { 0xf, "uge" },
- { 0 , 0 }
-};
-
-static void
-get_cc_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
-{
- char *src = *ptr;
- int i, l;
-
- while (*src == ' ')
- src++;
-
- mode->mode = CLASS_CC;
- for (i = 0; table[i].name; i++)
- {
- l = strlen (table[i].name);
- if (! strncasecmp (table[i].name, src, l))
- {
- the_cc = table[i].value;
- if (*(src + l) && *(src + l) != ',')
- break;
- *ptr = src + l; /* Valid cc found: "consume" it. */
- return;
- }
- }
- the_cc = 0x8; /* Not recognizing the cc defaults to t. (Assuming no cc present.) */
-}
-
-static void
-get_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
-{
- char *src = *ptr;
- char *end;
-
- mode->mode = 0;
-
- while (*src == ' ')
- src++;
- if (*src == '#')
- {
- mode->mode = CLASS_IMM;
- imm_operand = &(mode->exp);
- src = parse_exp (src + 1, &(mode->exp));
- }
- else if (*src == '@')
- {
- mode->mode = CLASS_IR;
- src = parse_reg (src + 1, &mode->regsize, &mode->reg);
- }
- else
- {
- unsigned int regn;
-
- end = parse_reg (src, &mode->mode, &regn);
-
- if (end)
- {
- int nw;
- unsigned int nr;
-
- src = end;
- if (*src == '(')
- {
- src++;
- end = parse_reg (src, &nw, &nr);
- if (end)
- {
- /* Got Ra(Rb). */
- src = end;
-
- if (*src != ')')
- as_bad (_("Missing ) in ra(rb)"));
- else
- src++;
-
- regaddr (mode->mode, "ra(rb) ra");
- mode->mode = CLASS_BX;
- mode->reg = regn;
- mode->x_reg = nr;
- reg[ARG_RX] = nr;
- }
- else
- {
- /* Got Ra(disp). */
- if (*src == '#')
- src++;
- src = parse_exp (src, &(mode->exp));
- src = checkfor (src, ')');
- mode->mode = CLASS_BA;
- mode->reg = regn;
- mode->x_reg = 0;
- imm_operand = &(mode->exp);
- }
- }
- else
- {
- mode->reg = regn;
- mode->x_reg = 0;
- }
- }
- else
- {
- /* No initial reg. */
- src = parse_exp (src, &(mode->exp));
- if (*src == '(')
- {
- src++;
- end = parse_reg (src, &(mode->mode), &regn);
- regword (mode->mode, "addr(Ra) ra");
- mode->mode = CLASS_X;
- mode->reg = regn;
- mode->x_reg = 0;
- da_operand = &(mode->exp);
- src = checkfor (end, ')');
- }
- else
- {
- /* Just an address. */
- mode->mode = CLASS_DA;
- mode->reg = 0;
- mode->x_reg = 0;
- da_operand = &(mode->exp);
- }
- }
- }
- *ptr = src;
-}
-
-static char *
-get_operands (const opcode_entry_type *opcode, char *op_end, op_type *operand)
-{
- char *ptr = op_end;
- char *savptr;
-
- switch (opcode->noperands)
- {
- case 0:
- operand[0].mode = 0;
- operand[1].mode = 0;
- while (*ptr == ' ')
- ptr++;
- break;
-
- case 1:
- if (opcode->arg_info[0] == CLASS_CC)
- {
- get_cc_operand (&ptr, operand + 0, 0);
- while (*ptr == ' ')
- ptr++;
- if (*ptr && ! is_end_of_line[(unsigned char) *ptr])
- {
- as_bad (_("invalid condition code '%s'"), ptr);
- while (*ptr && ! is_end_of_line[(unsigned char) *ptr])
- ptr++; /* Consume rest of line. */
- }
- }
- else if (opcode->arg_info[0] == CLASS_FLAGS)
- {
- get_flags_operand (&ptr, operand + 0, 0);
- while (*ptr == ' ')
- ptr++;
- if (*ptr && ! is_end_of_line[(unsigned char) *ptr])
- {
- as_bad (_("invalid flag '%s'"), ptr);
- while (*ptr && ! is_end_of_line[(unsigned char) *ptr])
- ptr++; /* Consume rest of line. */
- }
- }
- else if (opcode->arg_info[0] == (CLASS_IMM + (ARG_IMM2)))
- get_interrupt_operand (&ptr, operand + 0, 0);
- else
- get_operand (&ptr, operand + 0, 0);
-
- operand[1].mode = 0;
- break;
-
- case 2:
- savptr = ptr;
- if (opcode->arg_info[0] == CLASS_CC)
- {
- get_cc_operand (&ptr, operand + 0, 0);
- while (*ptr == ' ')
- ptr++;
- if (*ptr != ',' && strchr (ptr + 1, ','))
- {
- savptr = ptr;
- while (*ptr != ',')
- ptr++;
- *ptr = 0;
- ptr++;
- as_bad (_("invalid condition code '%s'"), savptr);
- }
- }
- else if (opcode->arg_info[0] == CLASS_CTRL)
- {
- get_ctrl_operand (&ptr, operand + 0, 0);
-
- if (the_ctrl == 0)
- {
- ptr = savptr;
- get_operand (&ptr, operand + 0, 0);
-
- if (ptr == 0)
- return NULL;
- if (*ptr == ',')
- ptr++;
- get_ctrl_operand (&ptr, operand + 1, 1);
- if (the_ctrl == 0)
- return NULL;
- return ptr;
- }
- }
- else
- get_operand (&ptr, operand + 0, 0);
-
- if (ptr == 0)
- return NULL;
- if (*ptr == ',')
- ptr++;
- get_operand (&ptr, operand + 1, 1);
- break;
-
- case 3:
- get_operand (&ptr, operand + 0, 0);
- if (*ptr == ',')
- ptr++;
- get_operand (&ptr, operand + 1, 1);
- if (*ptr == ',')
- ptr++;
- get_operand (&ptr, operand + 2, 2);
- break;
-
- case 4:
- get_operand (&ptr, operand + 0, 0);
- if (*ptr == ',')
- ptr++;
- get_operand (&ptr, operand + 1, 1);
- if (*ptr == ',')
- ptr++;
- get_operand (&ptr, operand + 2, 2);
- if (*ptr == ',')
- ptr++;
- get_cc_operand (&ptr, operand + 3, 3);
- 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. */
-
-static opcode_entry_type *
-get_specific (opcode_entry_type *opcode, op_type *operands)
-{
- opcode_entry_type *this_try = opcode;
- int found = 0;
- unsigned int noperands = opcode->noperands;
-
- int this_index = opcode->idx;
-
- while (this_index == opcode->idx && !found)
- {
- unsigned int i;
-
- this_try = opcode++;
- for (i = 0; i < noperands; i++)
- {
- unsigned int mode = operands[i].mode;
-
- if (((mode & CLASS_MASK) == CLASS_IR) && ((this_try->arg_info[i] & CLASS_MASK) == CLASS_IRO))
- {
- mode = operands[i].mode = (operands[i].mode & ~CLASS_MASK) | CLASS_IRO;
- }
-
- if ((mode & CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK))
- {
- /* It could be a pc rel operand, if this is a da mode
- and we like disps, then insert it. */
-
- if (mode == CLASS_DA && this_try->arg_info[i] == CLASS_DISP)
- {
- /* This is the case. */
- operands[i].mode = CLASS_DISP;
- }
- else if (mode == CLASS_BA && this_try->arg_info[i])
- {
- /* Can't think of a way to turn what we've been
- given into something that's OK. */
- goto fail;
- }
- else if (this_try->arg_info[i] & CLASS_PR)
- {
- if (mode == CLASS_REG_LONG && segmented_mode)
- {
- /* OK. */
- }
- else if (mode == CLASS_REG_WORD && !segmented_mode)
- {
- /* OK. */
- }
- else
- goto fail;
- }
- else
- goto fail;
- }
- switch (mode & CLASS_MASK)
- {
- default:
- break;
- case CLASS_IRO:
- if (operands[i].regsize != CLASS_REG_WORD)
- as_bad (_("invalid indirect register size"));
- reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
- break;
- case CLASS_IR:
- if ((segmented_mode && operands[i].regsize != CLASS_REG_LONG)
- || (!segmented_mode && operands[i].regsize != CLASS_REG_WORD))
- as_bad (_("invalid indirect register size"));
- reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
- break;
- case CLASS_X:
- case CLASS_BA:
- case CLASS_BX:
- case CLASS_DISP:
- case CLASS_REG:
- case CLASS_REG_WORD:
- case CLASS_REG_BYTE:
- case CLASS_REG_QUAD:
- case CLASS_REG_LONG:
- case CLASS_REGN0:
- reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
- break;
- case CLASS_CTRL:
- if (this_try->opcode == OPC_ldctlb && the_ctrl != 1)
- as_bad (_("invalid control register name"));
- break;
- }
- }
-
- found = 1;
- fail:
- ;
- }
- if (found)
- return this_try;
- else
- return 0;
-}
-
-static char buffer[20];
-
-static void
-newfix (int ptr, int type, int size, expressionS *operand)
-{
- int is_pcrel = 0;
- fixS *fixP;
-
- /* Size is in nibbles. */
- if (operand->X_add_symbol
- || operand->X_op_symbol
- || operand->X_add_number)
- {
- switch(type)
- {
- case BFD_RELOC_8_PCREL:
- case BFD_RELOC_Z8K_CALLR:
- case BFD_RELOC_Z8K_DISP7:
- is_pcrel = 1;
- }
- fixP = fix_new_exp (frag_now, ptr, size / 2,
- operand, is_pcrel, type);
- if (is_pcrel)
- fixP->fx_no_overflow = 1;
- }
-}
-
-static char *
-apply_fix (char *ptr, int type, expressionS *operand, int size)
-{
- long n = operand->X_add_number;
-
- /* size is in nibbles. */
-
- newfix ((ptr - buffer) / 2, type, size + 1, operand);
- switch (size)
- {
- case 8: /* 8 nibbles == 32 bits. */
- *ptr++ = n >> 28;
- *ptr++ = n >> 24;
- *ptr++ = n >> 20;
- *ptr++ = n >> 16;
- case 4: /* 4 nibbles == 16 bits. */
- *ptr++ = n >> 12;
- *ptr++ = n >> 8;
- case 2:
- *ptr++ = n >> 4;
- case 1:
- *ptr++ = n >> 0;
- break;
- }
- return ptr;
-}
-
-/* Now we know what sort of opcodes it is. Let's build the bytes. */
-
-static void
-build_bytes (opcode_entry_type *this_try, struct z8k_op *operand ATTRIBUTE_UNUSED)
-{
- char *output_ptr = buffer;
- int c;
- int nibble;
- unsigned int *class_ptr;
-
- frag_wane (frag_now);
- frag_new (0);
-
- if (frag_room () < 8)
- frag_grow (8); /* Make room for maximum instruction size. */
-
- memset (buffer, 0, sizeof (buffer));
- class_ptr = this_try->byte_info;
-
- for (nibble = 0; (c = *class_ptr++); nibble++)
- {
-
- switch (c & CLASS_MASK)
- {
- default:
- abort ();
-
- case CLASS_ADDRESS:
- /* Direct address, we don't cope with the SS mode right now. */
- if (segmented_mode)
- {
- /* da_operand->X_add_number |= 0x80000000; -- Now set at relocation time. */
- output_ptr = apply_fix (output_ptr, BFD_RELOC_32, da_operand, 8);
- }
- else
- {
- output_ptr = apply_fix (output_ptr, BFD_RELOC_16, da_operand, 4);
- }
- da_operand = 0;
- break;
- case CLASS_DISP8:
- /* pc rel 8 bit */
- output_ptr = apply_fix (output_ptr, BFD_RELOC_8_PCREL, da_operand, 2);
- da_operand = 0;
- break;
-
- case CLASS_0DISP7:
- /* pc rel 7 bit */
- *output_ptr = 0;
- output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_DISP7, da_operand, 2);
- da_operand = 0;
- break;
-
- case CLASS_1DISP7:
- /* pc rel 7 bit */
- *output_ptr = 0x80;
- output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_DISP7, da_operand, 2);
- output_ptr[-2] = 0x8;
- da_operand = 0;
- break;
-
- case CLASS_BIT_1OR2:
- *output_ptr = c & 0xf;
- if (imm_operand)
- {
- if (imm_operand->X_add_number == 2)
- *output_ptr |= 2;
- else if (imm_operand->X_add_number != 1)
- as_bad (_("immediate must be 1 or 2"));
- }
- else
- as_bad (_("immediate 1 or 2 expected"));
- output_ptr++;
- break;
- case CLASS_CC:
- *output_ptr++ = the_cc;
- break;
- case CLASS_0CCC:
- if (the_ctrl < 2 || the_ctrl > 7)
- as_bad (_("invalid control register name"));
- *output_ptr++ = the_ctrl;
- break;
- case CLASS_1CCC:
- if (the_ctrl < 2 || the_ctrl > 7)
- as_bad (_("invalid control register name"));
- *output_ptr++ = the_ctrl | 0x8;
- break;
- case CLASS_00II:
- *output_ptr++ = (~the_interrupt & 0x3);
- break;
- case CLASS_01II:
- *output_ptr++ = (~the_interrupt & 0x3) | 0x4;
- break;
- case CLASS_FLAGS:
- *output_ptr++ = the_flags;
- break;
- case CLASS_IGNORE:
- case CLASS_BIT:
- *output_ptr++ = c & 0xf;
- break;
- case CLASS_REGN0:
- if (reg[c & 0xf] == 0)
- as_bad (_("can't use R0 here"));
- /* Fall through. */
- case CLASS_REG:
- case CLASS_REG_BYTE:
- case CLASS_REG_WORD:
- case CLASS_REG_LONG:
- case CLASS_REG_QUAD:
- /* Insert bit mattern of right reg. */
- *output_ptr++ = reg[c & 0xf];
- break;
- case CLASS_DISP:
- switch (c & ARG_MASK)
- {
- case ARG_DISP12:
- output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_CALLR, da_operand, 4);
- break;
- case ARG_DISP16:
- output_ptr = apply_fix (output_ptr, BFD_RELOC_16_PCREL, da_operand, 4);
- break;
- default:
- output_ptr = apply_fix (output_ptr, BFD_RELOC_16, da_operand, 4);
- }
- da_operand = 0;
- break;
-
- case CLASS_IMM:
- {
- switch (c & ARG_MASK)
- {
- case ARG_NIM4:
- if (imm_operand->X_add_number > 15)
- as_bad (_("immediate value out of range"));
- imm_operand->X_add_number = -imm_operand->X_add_number;
- output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_IMM4L, imm_operand, 1);
- break;
- /*case ARG_IMMNMINUS1: not used. */
- case ARG_IMM4M1:
- imm_operand->X_add_number--;
- /* Drop through. */
- case ARG_IMM4:
- if (imm_operand->X_add_number > 15)
- as_bad (_("immediate value out of range"));
- output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_IMM4L, imm_operand, 1);
- break;
- case ARG_NIM8:
- imm_operand->X_add_number = -imm_operand->X_add_number;
- /* Drop through. */
- case ARG_IMM8:
- output_ptr = apply_fix (output_ptr, BFD_RELOC_8, imm_operand, 2);
- break;
- case ARG_IMM16:
- output_ptr = apply_fix (output_ptr, BFD_RELOC_16, imm_operand, 4);
- break;
- case ARG_IMM32:
- output_ptr = apply_fix (output_ptr, BFD_RELOC_32, imm_operand, 8);
- break;
- default:
- abort ();
- }
- }
- }
- }
-
- /* Copy from the nibble buffer into the frag. */
- {
- int length = (output_ptr - buffer) / 2;
- char *src = buffer;
- char *fragp = frag_more (length);
-
- while (src < output_ptr)
- {
- *fragp = (src[0] << 4) | src[1];
- src += 2;
- fragp++;
- }
- }
-}
-
-/* This is the guts of the machine-dependent assembler. STR points to a
- machine dependent instruction. This function is supposed to emit
- the frags/bytes it assembles to. */
-
-void
-md_assemble (char *str)
-{
- char c;
- char *op_start;
- char *op_end;
- struct z8k_op operand[4];
- opcode_entry_type *opcode;
-
- /* Drop leading whitespace. */
- while (*str == ' ')
- str++;
-
- /* Find the op code end. */
- for (op_start = op_end = str;
- *op_end != 0 && *op_end != ' ' && ! is_end_of_line[(unsigned char) *op_end];
- op_end++)
- ;
-
- if (op_end == op_start)
- {
- as_bad (_("can't find opcode "));
- }
- c = *op_end;
-
- *op_end = 0; /* Zero-terminate op code string for hash_find() call. */
-
- opcode = (opcode_entry_type *) hash_find (opcode_hash_control, op_start);
-
- if (opcode == NULL)
- {
- as_bad (_("unknown opcode"));
- return;
- }
-
- *op_end = c; /* Restore original string. */
-
- if (opcode->opcode == 250)
- {
- pseudo_typeS *p;
- char oc;
- char *old = input_line_pointer;
-
- /* Was really a pseudo op. */
-
- input_line_pointer = op_end;
-
- oc = *old;
- *old = '\n';
- while (*input_line_pointer == ' ')
- input_line_pointer++;
- p = (pseudo_typeS *) (opcode->func);
-
- (p->poc_handler) (p->poc_val);
- input_line_pointer = old;
- *old = oc;
- }
- else
- {
- char *new_input_line_pointer;
-
- new_input_line_pointer = get_operands (opcode, op_end, operand);
- if (new_input_line_pointer)
- {
- input_line_pointer = new_input_line_pointer;
- opcode = get_specific (opcode, operand);
- }
-
- if (new_input_line_pointer == NULL || opcode == NULL)
- {
- /* Couldn't find an opcode which matched the operands. */
- char *where = frag_more (2);
-
- where[0] = 0x0;
- where[1] = 0x0;
-
- as_bad (_("Can't find opcode to match operands"));
- return;
- }
-
- build_bytes (opcode, operand);
- }
-}
-
-/* We have no need to default values of symbols. */
-
-symbolS *
-md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
-{
- return 0;
-}
-
-/* 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 (int type, char *litP, int *sizeP)
-{
- int prec;
- LITTLENUM_TYPE words[MAX_LITTLENUMS];
- LITTLENUM_TYPE *wordP;
- char *t;
-
- 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 = "z:";
-
-struct option md_longopts[] =
- {
-#define OPTION_RELAX (OPTION_MD_BASE)
- {"linkrelax", no_argument, NULL, OPTION_RELAX},
- {NULL, no_argument, NULL, 0}
- };
-
-size_t md_longopts_size = sizeof (md_longopts);
-
-int
-md_parse_option (int c, char *arg)
-{
- switch (c)
- {
- case 'z':
- if (!strcmp (arg, "8001"))
- s_segm (1);
- else if (!strcmp (arg, "8002"))
- s_segm (0);
- else
- {
- as_bad (_("invalid architecture -z%s"), arg);
- return 0;
- }
- z8k_target_from_cmdline = 1;
- break;
-
- case OPTION_RELAX:
- linkrelax = 1;
- break;
-
- default:
- return 0;
- }
-
- return 1;
-}
-
-void
-md_show_usage (FILE *stream)
-{
- fprintf (stream, _("\
- Z8K options:\n\
- -z8001 generate segmented code\n\
- -z8002 generate unsegmented code\n\
- -linkrelax create linker relaxable code\n"));
-}
-
-void
-md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED,
- segT sec ATTRIBUTE_UNUSED,
- fragS *fragP ATTRIBUTE_UNUSED)
-{
- printf (_("call to md_convert_frag\n"));
- abort ();
-}
-
-/* Generate a machine dependent reloc from a fixup. */
-
-arelent*
-tc_gen_reloc (asection *section ATTRIBUTE_UNUSED,
- fixS *fixp ATTRIBUTE_UNUSED)
-{
- arelent *reloc;
-
- reloc = xmalloc (sizeof (*reloc));
- reloc->sym_ptr_ptr = xmalloc (sizeof (asymbol *));
- *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
- reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
- reloc->addend = fixp->fx_offset;
- reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
-
- if (! reloc->howto)
- {
- as_bad_where (fixp->fx_file, fixp->fx_line,
- "Cannot represent %s relocation in object file",
- bfd_get_reloc_code_name (fixp->fx_r_type));
- abort ();
- }
- return reloc;
-}
-
-valueT
-md_section_align (segT seg, valueT size)
-{
- int align = bfd_get_section_alignment (stdoutput, seg);
- valueT mask = ((valueT) 1 << align) - 1;
-
- return (size + mask) & ~mask;
-}
-
-/* Attempt to simplify or eliminate a fixup. To indicate that a fixup
- has been eliminated, set fix->fx_done. If fix->fx_addsy is non-NULL,
- we will have to generate a reloc entry. */
-void
-md_apply_fix (fixS *fixP, valueT *valP, segT segment ATTRIBUTE_UNUSED)
-{
- long val = * (long *) valP;
- char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
-
- switch (fixP->fx_r_type)
- {
- case BFD_RELOC_Z8K_IMM4L:
- if (fixP->fx_addsy)
- {
- fixP->fx_no_overflow = 1;
- fixP->fx_done = 0;
- }
- else
- buf[0] = (buf[0] & 0xf0) | (val & 0xf);
- break;
-
- case BFD_RELOC_8:
- if (fixP->fx_addsy)
- {
- fixP->fx_no_overflow = 1;
- fixP->fx_done = 0;
- }
- else
- *buf++ = val;
- break;
-
- case BFD_RELOC_16:
- if (fixP->fx_addsy)
- {
- fixP->fx_no_overflow = 1;
- fixP->fx_done = 0;
- }
- else
- {
- *buf++ = (val >> 8);
- *buf++ = val;
- }
- break;
-
- case BFD_RELOC_32:
- if (fixP->fx_addsy)
- {
- fixP->fx_no_overflow = 1;
- fixP->fx_done = 0;
- }
- else
- {
- *buf++ = (val >> 24);
- *buf++ = (val >> 16);
- *buf++ = (val >> 8);
- *buf++ = val;
- }
- break;
-
- case BFD_RELOC_8_PCREL:
- if (fixP->fx_addsy)
- {
- fixP->fx_no_overflow = 1;
- fixP->fx_done = 0;
- }
- else
- {
- if (val & 1)
- as_bad_where (fixP->fx_file, fixP->fx_line,
- _("cannot branch to odd address"));
- val /= 2;
- if (val > 127 || val < -128)
- as_bad_where (fixP->fx_file, fixP->fx_line,
- _("relative jump out of range"));
- *buf++ = val;
- fixP->fx_no_overflow = 1;
- fixP->fx_done = 1;
- }
- break;
-
- case BFD_RELOC_16_PCREL:
- if (fixP->fx_addsy)
- {
- fixP->fx_no_overflow = 1;
- fixP->fx_done = 0;
- }
- else
- {
- val = val - fixP->fx_frag->fr_address + fixP->fx_where - fixP->fx_size;
- if (val > 32767 || val < -32768)
- as_bad_where (fixP->fx_file, fixP->fx_line,
- _("relative address out of range"));
- *buf++ = (val >> 8);
- *buf++ = val;
- fixP->fx_no_overflow = 1;
- fixP->fx_done = 1;
- }
- break;
-
- case BFD_RELOC_Z8K_CALLR:
- if (fixP->fx_addsy)
- {
- fixP->fx_no_overflow = 1;
- fixP->fx_done = 0;
- }
- else
- {
- if (val & 1)
- as_bad_where (fixP->fx_file, fixP->fx_line,
- _("cannot branch to odd address"));
- if (val > 4096 || val < -4095)
- as_bad_where (fixP->fx_file, fixP->fx_line,
- _("relative call out of range"));
- val = -val / 2;
- *buf = (*buf & 0xf0) | ((val >> 8) & 0xf);
- buf++;
- *buf++ = val & 0xff;
- fixP->fx_no_overflow = 1;
- fixP->fx_done = 1;
- }
- break;
-
- case BFD_RELOC_Z8K_DISP7:
- if (fixP->fx_addsy)
- {
- fixP->fx_no_overflow = 1;
- fixP->fx_done = 0;
- }
- else
- {
- if (val & 1)
- as_bad_where (fixP->fx_file, fixP->fx_line,
- _("cannot branch to odd address"));
- val /= 2;
- if (val > 0 || val < -127)
- as_bad_where (fixP->fx_file, fixP->fx_line,
- _("relative jump out of range"));
- *buf = (*buf & 0x80) | (-val & 0x7f);
- fixP->fx_no_overflow = 1;
- fixP->fx_done = 1;
- }
- break;
-
- default:
- printf(_("md_apply_fix: unknown r_type 0x%x\n"), fixP->fx_r_type);
- abort ();
- }
-
- if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
- fixP->fx_done = 1;
-}
-
-int
-md_estimate_size_before_relax (fragS *fragP ATTRIBUTE_UNUSED,
- segT segment_type ATTRIBUTE_UNUSED)
-{
- printf (_("call to md_estimate_size_before_relax\n"));
- abort ();
-}
-
-/* Put number into target byte order. */
-
-void
-md_number_to_chars (char *ptr, valueT use, int nbytes)
-{
- number_to_chars_bigendian (ptr, use, nbytes);
-}
-
-/* On the Z8000, a PC-relative offset is relative to the address of the
- instruction plus its size. */
-long
-md_pcrel_from (fixS *fixP)
-{
- return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address;
-}
-
-void
-tc_coff_symbol_emit_hook (symbolS *s ATTRIBUTE_UNUSED)
-{
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 16:32:56 +0000