Annotation of OpenXM_contrib2/asir2000/gc/mach_dep.c, Revision 1.1
1.1 ! noro 1: /*
! 2: * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
! 3: * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved.
! 4: *
! 5: * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
! 6: * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
! 7: *
! 8: * Permission is hereby granted to use or copy this program
! 9: * for any purpose, provided the above notices are retained on all copies.
! 10: * Permission to modify the code and to distribute modified code is granted,
! 11: * provided the above notices are retained, and a notice that the code was
! 12: * modified is included with the above copyright notice.
! 13: */
! 14: /* Boehm, November 17, 1995 12:13 pm PST */
! 15: # include "gc_priv.h"
! 16: # include <stdio.h>
! 17: # include <setjmp.h>
! 18: # if defined(OS2) || defined(CX_UX)
! 19: # define _setjmp(b) setjmp(b)
! 20: # define _longjmp(b,v) longjmp(b,v)
! 21: # endif
! 22: # ifdef AMIGA
! 23: # ifndef __GNUC__
! 24: # include <dos/dos.h>
! 25: # else
! 26: # include <machine/reg.h>
! 27: # endif
! 28: # endif
! 29:
! 30: #if defined(__MWERKS__) && !defined(POWERPC)
! 31:
! 32: asm static void PushMacRegisters()
! 33: {
! 34: sub.w #4,sp // reserve space for one parameter.
! 35: move.l a2,(sp)
! 36: jsr GC_push_one
! 37: move.l a3,(sp)
! 38: jsr GC_push_one
! 39: move.l a4,(sp)
! 40: jsr GC_push_one
! 41: # if !__option(a6frames)
! 42: // <pcb> perhaps a6 should be pushed if stack frames are not being used.
! 43: move.l a6,(sp)
! 44: jsr GC_push_one
! 45: # endif
! 46: // skip a5 (globals), a6 (frame pointer), and a7 (stack pointer)
! 47: move.l d2,(sp)
! 48: jsr GC_push_one
! 49: move.l d3,(sp)
! 50: jsr GC_push_one
! 51: move.l d4,(sp)
! 52: jsr GC_push_one
! 53: move.l d5,(sp)
! 54: jsr GC_push_one
! 55: move.l d6,(sp)
! 56: jsr GC_push_one
! 57: move.l d7,(sp)
! 58: jsr GC_push_one
! 59: add.w #4,sp // fix stack.
! 60: rts
! 61: }
! 62:
! 63: #endif /* __MWERKS__ */
! 64:
! 65: /* Routine to mark from registers that are preserved by the C compiler. */
! 66: /* This must be ported to every new architecture. There is a generic */
! 67: /* version at the end, that is likely, but not guaranteed to work */
! 68: /* on your architecture. Run the test_setjmp program to see whether */
! 69: /* there is any chance it will work. */
! 70:
! 71: #ifndef USE_GENERIC_PUSH_REGS
! 72: void GC_push_regs()
! 73: {
! 74: # ifdef RT
! 75: register long TMP_SP; /* must be bound to r11 */
! 76: # endif
! 77: # ifdef VAX
! 78: /* VAX - generic code below does not work under 4.2 */
! 79: /* r1 through r5 are caller save, and therefore */
! 80: /* on the stack or dead. */
! 81: asm("pushl r11"); asm("calls $1,_GC_push_one");
! 82: asm("pushl r10"); asm("calls $1,_GC_push_one");
! 83: asm("pushl r9"); asm("calls $1,_GC_push_one");
! 84: asm("pushl r8"); asm("calls $1,_GC_push_one");
! 85: asm("pushl r7"); asm("calls $1,_GC_push_one");
! 86: asm("pushl r6"); asm("calls $1,_GC_push_one");
! 87: # endif
! 88: # if defined(M68K) && (defined(SUNOS4) || defined(NEXT))
! 89: /* M68K SUNOS - could be replaced by generic code */
! 90: /* a0, a1 and d1 are caller save */
! 91: /* and therefore are on stack or dead. */
! 92:
! 93: asm("subqw #0x4,sp"); /* allocate word on top of stack */
! 94:
! 95: asm("movl a2,sp@"); asm("jbsr _GC_push_one");
! 96: asm("movl a3,sp@"); asm("jbsr _GC_push_one");
! 97: asm("movl a4,sp@"); asm("jbsr _GC_push_one");
! 98: asm("movl a5,sp@"); asm("jbsr _GC_push_one");
! 99: /* Skip frame pointer and stack pointer */
! 100: asm("movl d1,sp@"); asm("jbsr _GC_push_one");
! 101: asm("movl d2,sp@"); asm("jbsr _GC_push_one");
! 102: asm("movl d3,sp@"); asm("jbsr _GC_push_one");
! 103: asm("movl d4,sp@"); asm("jbsr _GC_push_one");
! 104: asm("movl d5,sp@"); asm("jbsr _GC_push_one");
! 105: asm("movl d6,sp@"); asm("jbsr _GC_push_one");
! 106: asm("movl d7,sp@"); asm("jbsr _GC_push_one");
! 107:
! 108: asm("addqw #0x4,sp"); /* put stack back where it was */
! 109: # endif
! 110:
! 111: # if defined(M68K) && defined(HP)
! 112: /* M68K HP - could be replaced by generic code */
! 113: /* a0, a1 and d1 are caller save. */
! 114:
! 115: asm("subq.w &0x4,%sp"); /* allocate word on top of stack */
! 116:
! 117: asm("mov.l %a2,(%sp)"); asm("jsr _GC_push_one");
! 118: asm("mov.l %a3,(%sp)"); asm("jsr _GC_push_one");
! 119: asm("mov.l %a4,(%sp)"); asm("jsr _GC_push_one");
! 120: asm("mov.l %a5,(%sp)"); asm("jsr _GC_push_one");
! 121: /* Skip frame pointer and stack pointer */
! 122: asm("mov.l %d1,(%sp)"); asm("jsr _GC_push_one");
! 123: asm("mov.l %d2,(%sp)"); asm("jsr _GC_push_one");
! 124: asm("mov.l %d3,(%sp)"); asm("jsr _GC_push_one");
! 125: asm("mov.l %d4,(%sp)"); asm("jsr _GC_push_one");
! 126: asm("mov.l %d5,(%sp)"); asm("jsr _GC_push_one");
! 127: asm("mov.l %d6,(%sp)"); asm("jsr _GC_push_one");
! 128: asm("mov.l %d7,(%sp)"); asm("jsr _GC_push_one");
! 129:
! 130: asm("addq.w &0x4,%sp"); /* put stack back where it was */
! 131: # endif /* M68K HP */
! 132:
! 133: # if defined(M68K) && defined(AMIGA)
! 134: /* AMIGA - could be replaced by generic code */
! 135: /* a0, a1, d0 and d1 are caller save */
! 136:
! 137: # ifdef __GNUC__
! 138: asm("subq.w &0x4,%sp"); /* allocate word on top of stack */
! 139:
! 140: asm("mov.l %a2,(%sp)"); asm("jsr _GC_push_one");
! 141: asm("mov.l %a3,(%sp)"); asm("jsr _GC_push_one");
! 142: asm("mov.l %a4,(%sp)"); asm("jsr _GC_push_one");
! 143: asm("mov.l %a5,(%sp)"); asm("jsr _GC_push_one");
! 144: asm("mov.l %a6,(%sp)"); asm("jsr _GC_push_one");
! 145: /* Skip frame pointer and stack pointer */
! 146: asm("mov.l %d2,(%sp)"); asm("jsr _GC_push_one");
! 147: asm("mov.l %d3,(%sp)"); asm("jsr _GC_push_one");
! 148: asm("mov.l %d4,(%sp)"); asm("jsr _GC_push_one");
! 149: asm("mov.l %d5,(%sp)"); asm("jsr _GC_push_one");
! 150: asm("mov.l %d6,(%sp)"); asm("jsr _GC_push_one");
! 151: asm("mov.l %d7,(%sp)"); asm("jsr _GC_push_one");
! 152:
! 153: asm("addq.w &0x4,%sp"); /* put stack back where it was */
! 154: # else /* !__GNUC__ */
! 155: GC_push_one(getreg(REG_A2));
! 156: GC_push_one(getreg(REG_A3));
! 157: GC_push_one(getreg(REG_A4));
! 158: GC_push_one(getreg(REG_A5));
! 159: GC_push_one(getreg(REG_A6));
! 160: /* Skip stack pointer */
! 161: GC_push_one(getreg(REG_D2));
! 162: GC_push_one(getreg(REG_D3));
! 163: GC_push_one(getreg(REG_D4));
! 164: GC_push_one(getreg(REG_D5));
! 165: GC_push_one(getreg(REG_D6));
! 166: GC_push_one(getreg(REG_D7));
! 167: # endif /* !__GNUC__ */
! 168: # endif /* AMIGA */
! 169:
! 170: # if defined(M68K) && defined(MACOS)
! 171: # if defined(THINK_C)
! 172: # define PushMacReg(reg) \
! 173: move.l reg,(sp) \
! 174: jsr GC_push_one
! 175: asm {
! 176: sub.w #4,sp ; reserve space for one parameter.
! 177: PushMacReg(a2);
! 178: PushMacReg(a3);
! 179: PushMacReg(a4);
! 180: ; skip a5 (globals), a6 (frame pointer), and a7 (stack pointer)
! 181: PushMacReg(d2);
! 182: PushMacReg(d3);
! 183: PushMacReg(d4);
! 184: PushMacReg(d5);
! 185: PushMacReg(d6);
! 186: PushMacReg(d7);
! 187: add.w #4,sp ; fix stack.
! 188: }
! 189: # undef PushMacReg
! 190: # endif /* THINK_C */
! 191: # if defined(__MWERKS__)
! 192: PushMacRegisters();
! 193: # endif /* __MWERKS__ */
! 194: # endif /* MACOS */
! 195:
! 196: # if defined(I386) &&!defined(OS2) &&!defined(SVR4) &&!defined(MSWIN32) \
! 197: && !defined(SCO) && !defined(SCO_ELF) \
! 198: && !(defined(LINUX) && defined(__ELF__)) \
! 199: && !(defined(__FreeBSD__) && defined(__ELF__)) \
! 200: && !defined(DOS4GW)
! 201: /* I386 code, generic code does not appear to work */
! 202: /* It does appear to work under OS2, and asms dont */
! 203: /* This is used for some 38g UNIX variants and for CYGWIN32 */
! 204: asm("pushl %eax"); asm("call _GC_push_one"); asm("addl $4,%esp");
! 205: asm("pushl %ecx"); asm("call _GC_push_one"); asm("addl $4,%esp");
! 206: asm("pushl %edx"); asm("call _GC_push_one"); asm("addl $4,%esp");
! 207: asm("pushl %ebp"); asm("call _GC_push_one"); asm("addl $4,%esp");
! 208: asm("pushl %esi"); asm("call _GC_push_one"); asm("addl $4,%esp");
! 209: asm("pushl %edi"); asm("call _GC_push_one"); asm("addl $4,%esp");
! 210: asm("pushl %ebx"); asm("call _GC_push_one"); asm("addl $4,%esp");
! 211: # endif
! 212:
! 213: # if ( defined(I386) && defined(LINUX) && defined(__ELF__) ) \
! 214: || ( defined(I386) && defined(__FreeBSD__) && defined(__ELF__) )
! 215:
! 216: /* This is modified for Linux with ELF (Note: _ELF_ only) */
! 217: /* This section handles FreeBSD with ELF. */
! 218: asm("pushl %eax"); asm("call GC_push_one"); asm("addl $4,%esp");
! 219: asm("pushl %ecx"); asm("call GC_push_one"); asm("addl $4,%esp");
! 220: asm("pushl %edx"); asm("call GC_push_one"); asm("addl $4,%esp");
! 221: asm("pushl %ebp"); asm("call GC_push_one"); asm("addl $4,%esp");
! 222: asm("pushl %esi"); asm("call GC_push_one"); asm("addl $4,%esp");
! 223: asm("pushl %edi"); asm("call GC_push_one"); asm("addl $4,%esp");
! 224: asm("pushl %ebx"); asm("call GC_push_one"); asm("addl $4,%esp");
! 225: # endif
! 226:
! 227: # if defined(I386) && defined(MSWIN32) && !defined(USE_GENERIC)
! 228: /* I386 code, Microsoft variant */
! 229: __asm push eax
! 230: __asm call GC_push_one
! 231: __asm add esp,4
! 232: __asm push ebx
! 233: __asm call GC_push_one
! 234: __asm add esp,4
! 235: __asm push ecx
! 236: __asm call GC_push_one
! 237: __asm add esp,4
! 238: __asm push edx
! 239: __asm call GC_push_one
! 240: __asm add esp,4
! 241: __asm push ebp
! 242: __asm call GC_push_one
! 243: __asm add esp,4
! 244: __asm push esi
! 245: __asm call GC_push_one
! 246: __asm add esp,4
! 247: __asm push edi
! 248: __asm call GC_push_one
! 249: __asm add esp,4
! 250: # endif
! 251:
! 252: # if defined(I386) && (defined(SVR4) || defined(SCO) || defined(SCO_ELF))
! 253: /* I386 code, SVR4 variant, generic code does not appear to work */
! 254: asm("pushl %eax"); asm("call GC_push_one"); asm("addl $4,%esp");
! 255: asm("pushl %ebx"); asm("call GC_push_one"); asm("addl $4,%esp");
! 256: asm("pushl %ecx"); asm("call GC_push_one"); asm("addl $4,%esp");
! 257: asm("pushl %edx"); asm("call GC_push_one"); asm("addl $4,%esp");
! 258: asm("pushl %ebp"); asm("call GC_push_one"); asm("addl $4,%esp");
! 259: asm("pushl %esi"); asm("call GC_push_one"); asm("addl $4,%esp");
! 260: asm("pushl %edi"); asm("call GC_push_one"); asm("addl $4,%esp");
! 261: # endif
! 262:
! 263: # ifdef NS32K
! 264: asm ("movd r3, tos"); asm ("bsr ?_GC_push_one"); asm ("adjspb $-4");
! 265: asm ("movd r4, tos"); asm ("bsr ?_GC_push_one"); asm ("adjspb $-4");
! 266: asm ("movd r5, tos"); asm ("bsr ?_GC_push_one"); asm ("adjspb $-4");
! 267: asm ("movd r6, tos"); asm ("bsr ?_GC_push_one"); asm ("adjspb $-4");
! 268: asm ("movd r7, tos"); asm ("bsr ?_GC_push_one"); asm ("adjspb $-4");
! 269: # endif
! 270:
! 271: # ifdef SPARC
! 272: {
! 273: word GC_save_regs_in_stack();
! 274:
! 275: /* generic code will not work */
! 276: (void)GC_save_regs_in_stack();
! 277: }
! 278: # endif
! 279:
! 280: # ifdef RT
! 281: GC_push_one(TMP_SP); /* GC_push_one from r11 */
! 282:
! 283: asm("cas r11, r6, r0"); GC_push_one(TMP_SP); /* r6 */
! 284: asm("cas r11, r7, r0"); GC_push_one(TMP_SP); /* through */
! 285: asm("cas r11, r8, r0"); GC_push_one(TMP_SP); /* r10 */
! 286: asm("cas r11, r9, r0"); GC_push_one(TMP_SP);
! 287: asm("cas r11, r10, r0"); GC_push_one(TMP_SP);
! 288:
! 289: asm("cas r11, r12, r0"); GC_push_one(TMP_SP); /* r12 */
! 290: asm("cas r11, r13, r0"); GC_push_one(TMP_SP); /* through */
! 291: asm("cas r11, r14, r0"); GC_push_one(TMP_SP); /* r15 */
! 292: asm("cas r11, r15, r0"); GC_push_one(TMP_SP);
! 293: # endif
! 294:
! 295: # if defined(M68K) && defined(SYSV)
! 296: /* Once again similar to SUN and HP, though setjmp appears to work.
! 297: --Parag
! 298: */
! 299: # ifdef __GNUC__
! 300: asm("subqw #0x4,%sp"); /* allocate word on top of stack */
! 301:
! 302: asm("movl %a2,%sp@"); asm("jbsr GC_push_one");
! 303: asm("movl %a3,%sp@"); asm("jbsr GC_push_one");
! 304: asm("movl %a4,%sp@"); asm("jbsr GC_push_one");
! 305: asm("movl %a5,%sp@"); asm("jbsr GC_push_one");
! 306: /* Skip frame pointer and stack pointer */
! 307: asm("movl %d1,%sp@"); asm("jbsr GC_push_one");
! 308: asm("movl %d2,%sp@"); asm("jbsr GC_push_one");
! 309: asm("movl %d3,%sp@"); asm("jbsr GC_push_one");
! 310: asm("movl %d4,%sp@"); asm("jbsr GC_push_one");
! 311: asm("movl %d5,%sp@"); asm("jbsr GC_push_one");
! 312: asm("movl %d6,%sp@"); asm("jbsr GC_push_one");
! 313: asm("movl %d7,%sp@"); asm("jbsr GC_push_one");
! 314:
! 315: asm("addqw #0x4,%sp"); /* put stack back where it was */
! 316: # else /* !__GNUC__*/
! 317: asm("subq.w &0x4,%sp"); /* allocate word on top of stack */
! 318:
! 319: asm("mov.l %a2,(%sp)"); asm("jsr GC_push_one");
! 320: asm("mov.l %a3,(%sp)"); asm("jsr GC_push_one");
! 321: asm("mov.l %a4,(%sp)"); asm("jsr GC_push_one");
! 322: asm("mov.l %a5,(%sp)"); asm("jsr GC_push_one");
! 323: /* Skip frame pointer and stack pointer */
! 324: asm("mov.l %d1,(%sp)"); asm("jsr GC_push_one");
! 325: asm("mov.l %d2,(%sp)"); asm("jsr GC_push_one");
! 326: asm("mov.l %d3,(%sp)"); asm("jsr GC_push_one");
! 327: asm("mov.l %d4,(%sp)"); asm("jsr GC_push_one");
! 328: asm("mov.l %d5,(%sp)"); asm("jsr GC_push_one");
! 329: asm("mov.l %d6,(%sp)"); asm("jsr GC_push_one");
! 330: asm("mov.l %d7,(%sp)"); asm("jsr GC_push_one");
! 331:
! 332: asm("addq.w &0x4,%sp"); /* put stack back where it was */
! 333: # endif /* !__GNUC__ */
! 334: # endif /* M68K/SYSV */
! 335:
! 336:
! 337: /* other machines... */
! 338: # if !(defined M68K) && !(defined VAX) && !(defined RT)
! 339: # if !(defined SPARC) && !(defined I386) && !(defined NS32K)
! 340: # if !defined(POWERPC) && !defined(UTS4)
! 341: --> bad news <--
! 342: # endif
! 343: # endif
! 344: # endif
! 345: }
! 346: #endif /* !USE_GENERIC_PUSH_REGS */
! 347:
! 348: #if defined(USE_GENERIC_PUSH_REGS)
! 349: void GC_generic_push_regs(cold_gc_frame)
! 350: ptr_t cold_gc_frame;
! 351: {
! 352: /* Generic code */
! 353: /* The idea is due to Parag Patel at HP. */
! 354: /* We're not sure whether he would like */
! 355: /* to be he acknowledged for it or not. */
! 356: {
! 357: static jmp_buf regs;
! 358: register word * i = (word *) regs;
! 359: register ptr_t lim = (ptr_t)(regs) + (sizeof regs);
! 360:
! 361: /* Setjmp on Sun 3s doesn't clear all of the buffer. */
! 362: /* That tends to preserve garbage. Clear it. */
! 363: for (; (char *)i < lim; i++) {
! 364: *i = 0;
! 365: }
! 366: # if defined(POWERPC) || defined(MSWIN32) || defined(UTS4)
! 367: (void) setjmp(regs);
! 368: # else
! 369: (void) _setjmp(regs);
! 370: # endif
! 371: GC_push_current_stack(cold_gc_frame);
! 372: }
! 373: }
! 374: #endif /* USE_GENERIC_PUSH_REGS */
! 375:
! 376: /* On register window machines, we need a way to force registers into */
! 377: /* the stack. Return sp. */
! 378: # ifdef SPARC
! 379: asm(" .seg \"text\"");
! 380: # ifdef SVR4
! 381: asm(" .globl GC_save_regs_in_stack");
! 382: asm("GC_save_regs_in_stack:");
! 383: asm(" .type GC_save_regs_in_stack,#function");
! 384: # else
! 385: asm(" .globl _GC_save_regs_in_stack");
! 386: asm("_GC_save_regs_in_stack:");
! 387: # endif
! 388: asm(" ta 0x3 ! ST_FLUSH_WINDOWS");
! 389: asm(" mov %sp,%o0");
! 390: asm(" retl");
! 391: asm(" nop");
! 392: # ifdef SVR4
! 393: asm(" .GC_save_regs_in_stack_end:");
! 394: asm(" .size GC_save_regs_in_stack,.GC_save_regs_in_stack_end-GC_save_regs_in_stack");
! 395: # endif
! 396: # ifdef LINT
! 397: word GC_save_regs_in_stack() { return(0 /* sp really */);}
! 398: # endif
! 399: # endif
! 400:
! 401:
! 402: /* GC_clear_stack_inner(arg, limit) clears stack area up to limit and */
! 403: /* returns arg. Stack clearing is crucial on SPARC, so we supply */
! 404: /* an assembly version that's more careful. Assumes limit is hotter */
! 405: /* than sp, and limit is 8 byte aligned. */
! 406: #if defined(ASM_CLEAR_CODE) && !defined(THREADS)
! 407: #ifndef SPARC
! 408: --> fix it
! 409: #endif
! 410: # ifdef SUNOS4
! 411: asm(".globl _GC_clear_stack_inner");
! 412: asm("_GC_clear_stack_inner:");
! 413: # else
! 414: asm(".globl GC_clear_stack_inner");
! 415: asm("GC_clear_stack_inner:");
! 416: asm(".type GC_save_regs_in_stack,#function");
! 417: # endif
! 418: asm("mov %sp,%o2"); /* Save sp */
! 419: asm("add %sp,-8,%o3"); /* p = sp-8 */
! 420: asm("clr %g1"); /* [g0,g1] = 0 */
! 421: asm("add %o1,-0x60,%sp"); /* Move sp out of the way, */
! 422: /* so that traps still work. */
! 423: /* Includes some extra words */
! 424: /* so we can be sloppy below. */
! 425: asm("loop:");
! 426: asm("std %g0,[%o3]"); /* *(long long *)p = 0 */
! 427: asm("cmp %o3,%o1");
! 428: asm("bgu loop "); /* if (p > limit) goto loop */
! 429: asm("add %o3,-8,%o3"); /* p -= 8 (delay slot) */
! 430: asm("retl");
! 431: asm("mov %o2,%sp"); /* Restore sp., delay slot */
! 432: /* First argument = %o0 = return value */
! 433: # ifdef SVR4
! 434: asm(" .GC_clear_stack_inner_end:");
! 435: asm(" .size GC_clear_stack_inner,.GC_clear_stack_inner_end-GC_clear_stack_inner");
! 436: # endif
! 437:
! 438: # ifdef LINT
! 439: /*ARGSUSED*/
! 440: ptr_t GC_clear_stack_inner(arg, limit)
! 441: ptr_t arg; word limit;
! 442: { return(arg); }
! 443: # endif
! 444: #endif
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to mach_dep.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [local] / OpenXM_contrib2 / asir2000 / gc