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1.1 ! root 1: /* Definitions of target machine for GNU compiler. ! 2: Generic Tektronix 6000 series NS32000 version. ! 3: See ns32k/tek6100.h and ns32k/tek6200.h, which include this file. ! 4: Copyright (C) 1990 Free Software Foundation, Inc. ! 5: Created by Snoopy (sopwith.uucp!snoopy). ! 6: Based on work by Mark Mason ([email protected], ! 7: [email protected]) and Keith Packard. ! 8: ! 9: This file is part of GNU CC. ! 10: ! 11: GNU CC is free software; you can redistribute it and/or modify ! 12: it under the terms of the GNU General Public License as published by ! 13: the Free Software Foundation; either version 2, or (at your option) ! 14: any later version. ! 15: ! 16: GNU CC is distributed in the hope that it will be useful, ! 17: but WITHOUT ANY WARRANTY; without even the implied warranty of ! 18: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ! 19: GNU General Public License for more details. ! 20: ! 21: You should have received a copy of the GNU General Public License ! 22: along with GNU CC; see the file COPYING. If not, write to ! 23: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ ! 24: ! 25: /* Generate syntax for the UTek assembler. */ ! 26: #ifndef UTEK_ASM ! 27: #define UTEK_ASM ! 28: #endif ! 29: ! 30: /* Two flags to control how addresses are printed in assembler insns. */ ! 31: ! 32: /* The way PUT_ABSOLUTE_PREFIX in ns32k.h works, setting it to 0 will ! 33: * turn it off. Define ABSOLUTE_PREFIX before including ns32k.h. ! 34: */ ! 35: #define ABSOLUTE_PREFIX 0 ! 36: #define IMMEDIATE_PREFIX '$' ! 37: ! 38: #include "ns32k/ns32k.h" ! 39: ! 40: /* Define these after ns32k.c so we will notice if gcc tries to ! 41: * output external mode addressing. UTek's as and ld do not support ! 42: * external mode addressing, according to Daryl McDaniel (illian.uucp!darylm). ! 43: * Hopefully the UTek assembler will complain if gcc feeds it this stuff. ! 44: * They don't seem to do anything, I think that gcc is not actually ! 45: * trying to generate external mode operands. ! 46: */ ! 47: #undef PUT_EXTERNAL_PREFIX ! 48: #define PUT_EXTERNAL_PREFIX(arg) fprintf(arg, " Should not be using external mode under UTek. ") ! 49: #define EXTERNAL_PREFIX '%' ! 50: ! 51: /* Used in ns32k.c to control syntax. */ ! 52: #define NO_ABSOLUTE_PREFIX_IF_SYMBOLIC ! 53: #define NO_IMMEDIATE_PREFIX_IF_SYMBOLIC ! 54: ! 55: /* Used in ns32k.md to specify syntax of bsr/jsr operand. */ ! 56: #define CALL_MEMREF_IMPLICIT ! 57: ! 58: /* #define PC_RELATIVE */ /* Seems to break things. */ ! 59: #define BASE_REG_NEEDED /* Seems to fix problem where external mode ! 60: * syntax was being generated. ! 61: */ ! 62: ! 63: /* ------------ Debugging Support ----------------------------- */ ! 64: ! 65: /* The sdb support does not yet work with UTek. Need to teach gcc ! 66: * how to create sdb type stabs as well as dbx style stabs. ! 67: */ ! 68: #define DBX_DEBUGGING_INFO ! 69: /* #define SDB_DEBUGGING_INFO */ ! 70: ! 71: /* Act the same as the UTek complier: -g for dbx, -go for sdb. ! 72: * This is used in toplev.c. ! 73: */ ! 74: #define PREFERRED_DEBUGGING_TYPE \ ! 75: ((len > 1 && !strncmp(str, "go", len)) ? SDB_DEBUG : DBX_DEBUG ) ! 76: ! 77: /* Sequent has some changes in the format of DBX symbols. */ ! 78: #define DBX_NO_XREFS 1 ! 79: ! 80: /* Don't split DBX symbols into continuations. */ ! 81: #define DBX_CONTIN_LENGTH 0 ! 82: ! 83: /* ------------------------------------------- */ ! 84: ! 85: #define TARGET_DEFAULT 1 ! 86: ! 87: /* These control the C++ compiler somehow. */ ! 88: #define FASCIST_ASSEMBLER ! 89: #define USE_COLLECT ! 90: ! 91: /* Print subsidiary information on the compiler version in use. */ ! 92: #undef TARGET_VERSION ! 93: #define TARGET_VERSION fprintf (stderr, " (ns32k, UTek syntax)"); ! 94: ! 95: /* The tek6100.h and tek6200.h files add stratos or merlin respectively. */ ! 96: ! 97: #define CPP_PREDEFINES_Tek6000 \ ! 98: "-Dns16000 -Dns32000 -Dns32k -Dns32016 -DUTek -DUTEK -Dbsd -DBSD \ ! 99: -Asystem(unix) -Asystem(bsd) -Acpu(ns32k) -Amachine(ns32k)" ! 100: #undef CPP_PREDEFINES ! 101: #define CPP_PREDEFINES CPP_PREDEFINES_Tek6000 ! 102: ! 103: /* This is how to align the code that follows an unconditional branch. ! 104: Don't define it, since it confuses the assembler (we hear). */ ! 105: ! 106: #undef ASM_OUTPUT_ALIGN_CODE ! 107: ! 108: /* Assembler pseudo-op for shared data segment. */ ! 109: #define SHARED_SECTION_ASM_OP ".shdata" ! 110: ! 111: #ifdef UTEK_ASM ! 112: #undef FUNCTION_PROLOGUE ! 113: ! 114: /* This differs from the one in ns32k.h in printing a bitmask ! 115: rather than a register list in the enter or save instruction. */ ! 116: ! 117: #define FUNCTION_PROLOGUE(FILE, SIZE) \ ! 118: { register int regno, g_regs_used = 0; \ ! 119: int used_regs_buf[8], *bufp = used_regs_buf; \ ! 120: int used_fregs_buf[8], *fbufp = used_fregs_buf; \ ! 121: extern char call_used_regs[]; \ ! 122: MAIN_FUNCTION_PROLOGUE; \ ! 123: for (regno = 0; regno < 8; regno++) \ ! 124: if (regs_ever_live[regno] \ ! 125: && ! call_used_regs[regno]) \ ! 126: { \ ! 127: *bufp++ = regno; g_regs_used++; \ ! 128: } \ ! 129: *bufp = -1; \ ! 130: for (; regno < 16; regno++) \ ! 131: if (regs_ever_live[regno] && !call_used_regs[regno]) { \ ! 132: *fbufp++ = regno; \ ! 133: } \ ! 134: *fbufp = -1; \ ! 135: bufp = used_regs_buf; \ ! 136: if (frame_pointer_needed) \ ! 137: fprintf (FILE, "\tenter "); \ ! 138: else if (g_regs_used) \ ! 139: fprintf (FILE, "\tsave "); \ ! 140: if (frame_pointer_needed || g_regs_used) \ ! 141: { \ ! 142: char mask = 0; \ ! 143: while (*bufp >= 0) \ ! 144: mask |= 1 << *bufp++; \ ! 145: fprintf (FILE, "$0x%x", (int) mask & 0xff); \ ! 146: } \ ! 147: if (frame_pointer_needed) \ ! 148: fprintf (FILE, ",$%d\n", SIZE); \ ! 149: else if (g_regs_used) \ ! 150: fprintf (FILE, "\n"); \ ! 151: fbufp = used_fregs_buf; \ ! 152: while (*fbufp >= 0) \ ! 153: { \ ! 154: if ((*fbufp & 1) || (fbufp[0] != fbufp[1] - 1)) \ ! 155: fprintf (FILE, "\tmovf f%d,tos\n", *fbufp++ - 8); \ ! 156: else \ ! 157: { \ ! 158: fprintf (FILE, "\tmovl f%d,tos\n", fbufp[0] - 8); \ ! 159: fbufp += 2; \ ! 160: } \ ! 161: } \ ! 162: } ! 163: ! 164: #undef FUNCTION_EPILOGUE ! 165: ! 166: /* This differs from the one in ns32k.h in printing a bitmask ! 167: rather than a register list in the exit or restore instruction. */ ! 168: ! 169: #define FUNCTION_EPILOGUE(FILE, SIZE) \ ! 170: { register int regno, g_regs_used = 0, f_regs_used = 0; \ ! 171: int used_regs_buf[8], *bufp = used_regs_buf; \ ! 172: int used_fregs_buf[8], *fbufp = used_fregs_buf; \ ! 173: extern char call_used_regs[]; \ ! 174: *fbufp++ = -2; \ ! 175: for (regno = 8; regno < 16; regno++) \ ! 176: if (regs_ever_live[regno] && !call_used_regs[regno]) { \ ! 177: *fbufp++ = regno; f_regs_used++; \ ! 178: } \ ! 179: fbufp--; \ ! 180: for (regno = 0; regno < 8; regno++) \ ! 181: if (regs_ever_live[regno] \ ! 182: && ! call_used_regs[regno]) \ ! 183: { \ ! 184: *bufp++ = regno; g_regs_used++; \ ! 185: } \ ! 186: while (fbufp > used_fregs_buf) \ ! 187: { \ ! 188: if ((*fbufp & 1) && fbufp[0] == fbufp[-1] + 1) \ ! 189: { \ ! 190: fprintf (FILE, "\tmovl tos,f%d\n", fbufp[-1] - 8); \ ! 191: fbufp -= 2; \ ! 192: } \ ! 193: else fprintf (FILE, "\tmovf tos,f%d\n", *fbufp-- - 8); \ ! 194: } \ ! 195: if (frame_pointer_needed) \ ! 196: fprintf (FILE, "\texit "); \ ! 197: else if (g_regs_used) \ ! 198: fprintf (FILE, "\trestore "); \ ! 199: if (g_regs_used || frame_pointer_needed) \ ! 200: { \ ! 201: char mask = 0; \ ! 202: \ ! 203: while (bufp > used_regs_buf) \ ! 204: { \ ! 205: /* Utek assembler takes care of reversing this */ \ ! 206: mask |= 1 << *--bufp; \ ! 207: } \ ! 208: fprintf (FILE, "$0x%x\n", (int) mask & 0xff); \ ! 209: } \ ! 210: if (current_function_pops_args) \ ! 211: fprintf (FILE, "\tret $%d\n", current_function_pops_args); \ ! 212: else fprintf (FILE, "\tret $0\n"); } ! 213: ! 214: /* UTek assembler needs "ret $0", not "ret 0". */ ! 215: #undef TRANSFER_FROM_TRAMPOLINE ! 216: #define TRANSFER_FROM_TRAMPOLINE \ ! 217: void \ ! 218: __transfer_from_trampoline () \ ! 219: { \ ! 220: asm ("___trampoline:"); \ ! 221: asm ("movd 16(r2),tos"); \ ! 222: asm ("movd 12(r2),r2"); \ ! 223: asm ("ret $0"); \ ! 224: } ! 225: ! 226: #endif /* UTEK_ASM */ ! 227: ! 228: #undef PRINT_OPERAND_ADDRESS ! 229: #define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address(FILE, ADDR) ! 230: ! 231: /* The UTek library supplies bcopy() and friends, not memcpy(). */ ! 232: #ifdef TARGET_MEM_FUNCTIONS ! 233: #undef TARGET_MEM_FUNCTIONS ! 234: #endif
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