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- /* Subroutines for insn-output.c for MIL-STD-1750.
- Copyright (C) 1994, 1995 Free Software Foundation, Inc.
- Contributed by O.M.Kellogg, DASA (okellogg@salyko.cube.net).
-
- This file is part of GNU CC.
-
- GNU CC 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 1, or (at your option)
- any later version.
-
- GNU CC 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 GNU CC; see the file COPYING. If not, write to
- the Free Software Foundation, 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
- #ifndef FILE
- #include <stdio.h>
- #endif
- #include <string.h>
-
- #define __datalbl
- #include "config.h"
- #include "rtl.h"
- #include "tree.h"
- #include "expr.h"
- #define HAVE_cc0
- #include "conditions.h"
- #include "real.h"
-
- struct datalabel_array datalbl[DATALBL_ARRSIZ];
- int datalbl_ndx = -1;
- struct jumplabel_array jmplbl[JMPLBL_ARRSIZ];
- int jmplbl_ndx = -1;
- int label_pending = 0, program_counter = 0;
- enum section current_section = Normal;
- char *sectname[4] =
- {"Init", "Normal", "Konst", "Static"};
-
- int
- notice_update_cc (exp)
- rtx exp;
- {
- if (GET_CODE (exp) == SET)
- {
- enum rtx_code src_code = GET_CODE (SET_SRC (exp));
- /* Jumps do not alter the cc's. */
- if (SET_DEST (exp) == pc_rtx)
- return;
- /* Moving register into memory doesn't alter the cc's.
- It may invalidate the RTX's which we remember the cc's came from. */
- if (GET_CODE (SET_DEST (exp)) == MEM)
- {
- if (cc_status.value1 && GET_CODE (cc_status.value1) == MEM)
- cc_status.value1 = 0;
- if (cc_status.value2 && GET_CODE (cc_status.value2) == MEM)
- cc_status.value2 = 0;
- return;
- }
- /* Function calls clobber the cc's. */
- else if (src_code == CALL)
- {
- CC_STATUS_INIT;
- return;
- }
- /* Emulated longword bit-ops leave cc's incorrect */
- else if (GET_MODE (SET_DEST (exp)) == HImode ?
- src_code == AND || src_code == IOR ||
- src_code == XOR || src_code == NOT : 0)
- {
- CC_STATUS_INIT;
- return;
- }
- /* Tests and compares set the cc's in predictable ways. */
- else if (SET_DEST (exp) == cc0_rtx)
- {
- CC_STATUS_INIT;
- cc_status.value1 = SET_SRC (exp);
- return;
- }
- /* Anything that lands in a reg will set cc_status. */
- else if (REG_P (SET_DEST (exp)))
- {
- cc_status.flags = CC_NO_OVERFLOW;
- cc_status.value1 = SET_SRC (exp);
- cc_status.value2 = SET_DEST (exp);
- return;
- }
- else
- {
- CC_STATUS_INIT;
- }
- }
- else if (GET_CODE (exp) == PARALLEL
- && GET_CODE (XVECEXP (exp, 0, 0)) == SET)
- {
- if (SET_DEST (XVECEXP (exp, 0, 0)) == pc_rtx)
- return;
- if (SET_DEST (XVECEXP (exp, 0, 0)) == cc0_rtx)
- {
- CC_STATUS_INIT;
- cc_status.value1 = SET_SRC (XVECEXP (exp, 0, 0));
- return;
- }
- CC_STATUS_INIT;
- }
- else
- {
- CC_STATUS_INIT;
- }
- }
-
-
- rtx
- function_arg (cum, mode, type, named)
- int cum;
- enum machine_mode mode;
- tree type;
- int named;
- {
- int size;
- rtx result;
-
- if (MUST_PASS_IN_STACK (mode, type))
- return (rtx) 0;
- if (mode == BLKmode)
- size = int_size_in_bytes (type);
- else
- size = GET_MODE_SIZE (mode);
- if (cum + size < 12)
- return gen_rtx (REG, mode, cum);
- else
- return (rtx) 0;
- }
-
-
- #ifndef STRDUP
- char *
- strdup (str)
- char *str;
- {
- char *p;
- if (str == NULL)
- return NULL;
- if ((p = (char *) malloc (strlen (str) + 1)) == NULL)
- {
- fprintf (stderr, "dynamic memory exhausted");
- abort ();
- }
- return strcpy (p, str);
- }
-
- #endif
-
-
- double
- get_double (x)
- rtx x;
- {
- union
- {
- double d;
- long i[2];
- }
- du;
-
- du.i[0] = CONST_DOUBLE_LOW (x);
- du.i[1] = CONST_DOUBLE_HIGH (x);
- return du.d;
- }
-
- char *
- float_label (code, value)
- char code;
- double value;
- {
- int i = 1;
- static char label[32];
- char *p;
-
- label[0] = code;
- p = label + 1;
- sprintf (p, "%lf", value);
- while (*p)
- {
- *p = (*p == '+') ? 'p' :
- (*p == '-') ? 'm' : *p;
- p++;
- }
- return strdup (label);
- }
-
-
- char *
- movcnt_regno_adjust (op)
- rtx *op;
- {
- static char outstr[40];
- int cntreg = REGNO (op[2]), cntreg_1750 = REGNO (op[0]) + 1;
- int dstreg = REGNO (op[0]), srcreg = REGNO (op[1]);
-
- if (cntreg == cntreg_1750)
- sprintf (outstr, "mov r%%0,r%%1");
- else if (dstreg + 1 == srcreg && srcreg == cntreg + 2)
- sprintf (outstr, "xwr r%d,r%d\n\tmov r%%0,r%%1", cntreg, dstreg);
- else if (dstreg + 1 == srcreg && srcreg < cntreg)
- sprintf (outstr, "xwr r%d,r%d\n\tmov r%%0,r%%1", srcreg, cntreg);
- else if (srcreg + 1 == cntreg && dstreg > cntreg)
- sprintf (outstr, "xwr r%d,r%d\n\tmov r%%0,r%%1", srcreg, dstreg);
- else
- sprintf (outstr, "xwr r%d,r%d\n\tmov r%%0,%%1\n\txwr r%d,r%d",
- cntreg, cntreg_1750, cntreg_1750, cntreg);
- return outstr;
- }
-
- char *
- mod_regno_adjust (instr, op)
- char *instr;
- rtx *op;
- {
- static char outstr[40];
- char *r = (!strncmp (instr, "dvr", 3) ? "r" : "");
- int modregno_gcc = REGNO (op[3]), modregno_1750 = REGNO (op[0]) + 1;
-
- if (modregno_gcc == modregno_1750)
- sprintf (outstr, "%s r%%0,%s%%2", instr, r);
- else
- sprintf (outstr, "lr r%d,r%d\n\t%s r%%0,%s%%2\n\txwr r%d,r%d",
- modregno_gcc, modregno_1750, instr, r, modregno_1750, modregno_gcc);
- return outstr;
- }
-
-
- /* Auxiliary to `nonindirect_operand':
- Check if op is a valid memory operand for 1750A arith./logic (non-move)
- instructions. */
- int
- memop_valid (op)
- rtx op;
- {
- if (GET_MODE (op) != Pmode && GET_MODE (op) != VOIDmode)
- return 0;
- switch (GET_CODE (op))
- {
- case MEM:
- case MINUS:
- case MULT:
- case DIV:
- return 0;
- case PLUS:
- if (!memop_valid (XEXP (op, 0)))
- return 0;
- return memop_valid (XEXP (op, 1));
- case REG:
- if (REGNO (op) > 0)
- return 1;
- return 0;
- case CONST:
- case CONST_INT:
- case SYMBOL_REF:
- case SUBREG:
- return 1;
- default:
- printf ("memop_valid: code=%d\n", (int) GET_CODE (op));
- return 1;
- }
- }
-
- /* extra predicate for recog: */
- int
- nonindirect_operand (op, mode)
- rtx op;
- enum machine_mode mode;
- {
- int retval;
-
- switch (GET_CODE (op))
- {
- case MEM:
- retval = memop_valid (XEXP (op, 0));
- return retval;
- case REG:
- return 1;
- default:
- if (!CONSTANT_P (op))
- return 0;
- }
- return 1;
- }
-
- /* predicate for the STC instruction: */
- int
- small_nonneg_const (op, mode)
- rtx op;
- enum machine_mode mode;
- {
- if (GET_CODE (op) == CONST_INT && INTVAL (op) >= 0 && INTVAL (op) <= 15)
- return 1;
- return 0;
- }
-
- /* Decide whether to output a conditional jump as a "Jump Conditional"
- or as a "Branch Conditional": */
-
- int
- find_jmplbl (labelnum)
- int labelnum;
- {
- int i, found = 0;
-
- for (i = 0; i <= jmplbl_ndx; i++)
- if (labelnum == jmplbl[i].num)
- {
- found = 1;
- break;
- }
- if (found)
- return i;
- return -1;
- }
-
- char *
- branch_or_jump (condition, targetlabel_number)
- char *condition;
- int targetlabel_number;
- {
- static char buf[30];
- int index;
-
- if ((index = find_jmplbl (targetlabel_number)) >= 0)
- if (program_counter - jmplbl[index].pc < 128)
- {
- sprintf (buf, "b%s %%l0", condition);
- return buf;
- }
- sprintf (buf, "jc %s,%%l0", condition);
- return buf;
- }
-
-
-
- /* The PRINT_OPERAND and PRINT_OPERAND_ADDRESS macros have been
- made functions: */
-
- print_operand (file, x, kode)
- FILE *file;
- rtx x;
- enum rtx_code kode;
- {
- switch (GET_CODE (x))
- {
- case REG:
- fprintf (file, "%d", REGNO (x));
- break;
- case SYMBOL_REF:
- fprintf (file, "%s", XSTR (x, 0));
- break;
- case LABEL_REF:
- case CONST:
- case MEM:
- output_address (XEXP (x, 0));
- break;
- case CONST_DOUBLE:
- /* {
- double value = get_double (x);
- char fltstr[32];
- sprintf (fltstr, "%lf", value);
-
- if (kode == 'D' || kode == 'E')
- {
- int i, found = 0;
- for (i = 0; i <= datalbl_ndx; i++)
- if (strcmp (fltstr, datalbl[i].value) == 0)
- {
- found = 1;
- break;
- }
- if (!found)
- {
- strcpy (datalbl[i = ++datalbl_ndx].value, fltstr);
- datalbl[i].name = float_label (kode, value);
- datalbl[i].size = (kode == 'E') ? 3 : 2;
- check_section (Konst);
- fprintf (file, "K%s \tdata%s %s ;p_o\n", datalbl[i].name,
- (kode == 'E' ? "ef" : "f"), fltstr);
- check_section (Normal);
- }
- }
- else if (kode == 'F' || kode == 'G')
- {
- int i, found = 0;
- for (i = 0; i <= datalbl_ndx; i++)
- if (strcmp (fltstr, datalbl[i].value) == 0)
- {
- found = 1;
- break;
- }
- if (!found)
- {
- fprintf (stderr,
- "float value %lfnot found upon label reference\n", value);
- strcpy (datalbl[i = ++datalbl_ndx].value, fltstr);
- datalbl[i].name = float_label (kode, value);
- datalbl[i].size = (kode == 'G') ? 3 : 2;
- check_section (Konst);
- fprintf (file, "K%s \tdata%s %s ;p_o\n", datalbl[i].name,
- (kode == 'G' ? "ef" : "f"), fltstr);
- check_section (Normal);
- }
- fprintf (file, "%s ;P_O 'F'", datalbl[i].name);
- }
- else
- fprintf (file, " %s ;P_O cst_dbl ", fltstr);
- }
- */
- fprintf (file, "%lf", get_double (x));
- break;
- case CONST_INT:
- if (kode == 'J')
- fprintf (file, "%d", -INTVAL (x));
- else if (INTVAL (x) > 0x7FFF)
- fprintf (file, "%d ; range correction (val>0x7FFF) applied",
- INTVAL (x) - 0x10000);
- else
- fprintf (file, "%d", INTVAL (x));
- break;
- case CODE_LABEL:
- fprintf (file, "L%d", XINT (x, 3));
- break;
- case CALL:
- fprintf (file, "CALL nargs=%d, func is either '%s' or '%s'",
- XEXP (x, 1), XSTR (XEXP (XEXP (x, 0), 1), 0), XSTR (XEXP (x, 0), 1));
- break;
- case PLUS:
- {
- rtx op0 = XEXP (x, 0), op1 = XEXP (x, 1);
- int op0code = GET_CODE (op0), op1code = GET_CODE (op1);
- if (op1code == CONST_INT)
- switch (op0code)
- {
- case REG:
- fprintf (file, "%d,r%d ; p_o_PLUS for REG and CONST",
- INTVAL (op1), REGNO (op0));
- break;
- case SYMBOL_REF:
- fprintf (file, "%d+%s", INTVAL (op1), XSTR (op0, 0));
- break;
- case MEM:
- fprintf (file, "%d,[mem:", INTVAL (op1));
- output_address (XEXP (op0, 0));
- fprintf (file, "] ;P_O plus");
- break;
- default:
- fprintf (file, "p_o_PLUS UFO, code=%d, with CONST=%d",
- (int) op0code, INTVAL (op1));
- }
- else if (op1code == SYMBOL_REF && op0code == REG)
- fprintf (file, "%s,r%d ; P_O: (plus reg sym)",
- XSTR (op1, 0), REGNO (op0));
- else
- fprintf (file, "p_o_+: op0code=%d, op1code=%d", op0code, op1code);
- }
- break;
- default:
- fprintf (file, "p_o_UFO code=%d", GET_CODE (x));
- }
- }
-
- print_operand_address (file, addr)
- FILE *file;
- rtx addr;
- {
- switch (GET_CODE (addr))
- {
- case REG:
- fprintf (file, "0,r%d ; P_O_A", REGNO (addr));
- break;
- case PLUS:
- {
- register rtx x = XEXP (addr, 0), y = XEXP (addr, 1);
- switch (GET_CODE (x))
- {
- case REG:
- switch (GET_CODE (y))
- {
- case CONST:
- output_address (XEXP (y, 0));
- fprintf (file, ",r%d ;P_O_A reg + const expr", REGNO (x));
- break;
- case CONST_INT:
- fprintf (file, "%d,r%d", INTVAL (y), REGNO (x));
- break;
- case SYMBOL_REF:
- fprintf (file, "%s,r%d ; P_O_A reg + sym",
- XSTR (y, 0), REGNO (x));
- break;
- case LABEL_REF:
- output_address (XEXP (y, 0));
- fprintf (file, ",r%d ; P_O_A reg + label", REGNO (x));
- break;
- default:
- fprintf (file, "[P_O_A reg%d+UFO code=%d]",
- REGNO (x), GET_CODE (y));
- }
- break;
- case LABEL_REF:
- output_address (XEXP (x, 0));
- break;
- case SYMBOL_REF:
- switch (GET_CODE (y))
- {
- case CONST_INT:
- fprintf (file, "%d+%s", INTVAL (y), XSTR (x, 0));
- break;
- case REG:
- fprintf (file, "%s,r%d ;P_O_A sym + reg",
- XSTR (x, 0), REGNO (y));
- break;
- default:
- fprintf (file, "P_O_A sym/lab+UFO[sym=%s,code(y)=%d]",
- XSTR (x, 0), GET_CODE (y));
- }
- break;
- case CONST:
- output_address (XEXP (x, 0));
- if (GET_CODE (y) == REG)
- fprintf (file, ",r%d ;P_O_A const + reg", REGNO (x));
- else
- fprintf (file, "P_O_A const+UFO code(y)=%d]", GET_CODE (y));
- break;
- case MEM:
- output_address (y);
- fprintf (file, ",[mem:");
- output_address (XEXP (x, 0));
- fprintf (file, "] ;P_O_A plus");
- break;
- default:
- fprintf (file, "P_O_A plus op1_UFO[code1=%d,code2=%d]",
- GET_CODE (x), GET_CODE (y));
- }
- }
- break;
- case CONST_INT:
- if (INTVAL (addr) < 0x10000 && INTVAL (addr) >= -0x10000)
- fprintf (file, "%d ; p_o_a const addr?!", INTVAL (addr));
- else
- {
- fprintf (file, "[p_o_a=ILLEGAL_CONST]");
- output_addr_const (file, addr);
- }
- break;
- case LABEL_REF:
- case SYMBOL_REF:
- fprintf (file, "%s", XSTR (addr, 0));
- break;
- case MEM:
- fprintf (file, "[memUFO:");
- output_address (XEXP (addr, 0));
- fprintf (file, "]");
- break;
- case CONST:
- output_address (XEXP (addr, 0));
- fprintf (file, " ;P_O_A const");
- break;
- case CODE_LABEL:
- fprintf (file, "L%d", XINT (addr, 3));
- break;
- default:
- fprintf (file, " p_o_a UFO, code=%d val=0x%x",
- (int) GET_CODE (addr), INTVAL (addr));
- break;
- }
- }
-
-