diff options
Diffstat (limited to 'binutils-2.24/gas/config/tc-z8k.c')
-rw-r--r-- | binutils-2.24/gas/config/tc-z8k.c | 1566 |
1 files changed, 0 insertions, 1566 deletions
diff --git a/binutils-2.24/gas/config/tc-z8k.c b/binutils-2.24/gas/config/tc-z8k.c deleted file mode 100644 index 2442032e..00000000 --- a/binutils-2.24/gas/config/tc-z8k.c +++ /dev/null @@ -1,1566 +0,0 @@ -/* tc-z8k.c -- Assemble code for the Zilog Z800n - Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001, 2002, 2003, - 2005, 2006, 2007, 2009, 2013 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 3, 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 "as.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. - If non-zero, 1 means Z8002 (non-segmented), 2 means Z8001 (segmented). */ -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. */ - s_segm (z8k_target_from_cmdline ? z8k_target_from_cmdline - 1 : 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; - -/* Determine register number. src points to the ascii number - (after "rl", "rh", "r", "rr", or "rq"). If a character - outside the set of {0,',',')','('} follows the number, - return NULL to indicate that it's not a valid register - number. */ - -static char * -whatreg (unsigned int *preg, char *src) -{ - unsigned int new_reg; - - /* src[0] is already known to be a digit. */ - if (ISDIGIT (src[1])) - { - new_reg = (src[0] - '0') * 10 + src[1] - '0'; - src += 2; - } - else - { - new_reg = (src[0] - '0'); - src += 1; - } - - if (src[0] != 0 && src[0] != ',' && src[0] != '(' && src[0] != ')') - return NULL; - - *preg = new_reg; - return src; -} - -/* 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 *preg) -{ - char *res = NULL; - 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; - *preg = 14; - } - else - { - *mode = CLASS_REG_WORD; - *preg = 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 NULL; /* Assume no register name but a label starting with 'rr'. */ - *mode = CLASS_REG_LONG; - res = whatreg (preg, src + 2); - if (res == NULL) - return NULL; /* Not a valid register name. */ - regno = *preg; - 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 NULL; /* Assume no register name but a label starting with 'rh'. */ - *mode = CLASS_REG_BYTE; - res = whatreg (preg, src + 2); - if (res == NULL) - return NULL; /* Not a valid register name. */ - regno = *preg; - 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 NULL; /* Assume no register name but a label starting with 'rl'. */ - *mode = CLASS_REG_BYTE; - res = whatreg (preg, src + 2); - if (res == NULL) - return NULL; /* Not a valid register name. */ - regno = *preg; - if (regno > 7) - as_bad (_("register rl%d out of range"), regno); - *preg += 8; - } - else if (src[1] == 'q' || src[1] == 'Q') - { - if (src[2] < '0' || src[2] > '9') - return NULL; /* Assume no register name but a label starting with 'rq'. */ - *mode = CLASS_REG_QUAD; - res = whatreg (preg, src + 2); - if (res == NULL) - return NULL; /* Not a valid register name. */ - regno = *preg; - 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 NULL; /* Assume no register name but a label starting with 'r'. */ - *mode = CLASS_REG_WORD; - res = whatreg (preg, src + 1); - if (res == NULL) - return NULL; /* Not a valid register name. */ - regno = *preg; - 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_pointer; - - input_line_pointer = s; - expression (op); - if (op->X_op == O_absent) - as_bad (_("missing operand")); - new_pointer = input_line_pointer; - input_line_pointer = save; - return new_pointer; -} - -/* 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, ®n); - - 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), ®n); - 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. */ - -char * -md_atof (int type, char *litP, int *sizeP) -{ - return ieee_md_atof (type, litP, sizeP, TRUE); -} - -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")) - z8k_target_from_cmdline = 2; - else if (!strcmp (arg, "8002")) - z8k_target_from_cmdline = 1; - else - { - as_bad (_("invalid architecture -z%s"), arg); - return 0; - } - 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) -{ -} |