mirror of
https://github.com/golang/go
synced 2024-10-05 12:21:22 -06:00
f6a9807f56
8g/cgen.c: 8g/gobj.c . dropped unnecessary assignments; 8g/gg.h . added varargckk pragmas; 8g/ggen.c . dropped duplicate assignment; 8g/gsubr.c . adjusted format in print statement; . dropped unnecessary assignment; . replaced GCC's _builtin_return_address(0) with Plan 9's getcallerpc(&n) which is defined as a macro in <u.h>; 8g/list.c . adjusted format in snprint statement; 8g/opt.h . added varargck pragma (Adr*) that is specific for the invoking modules; 8g/peep.c . dropped unnecessary incrementation; R=rsc CC=golang-dev https://golang.org/cl/4974044
305 lines
5.9 KiB
C
305 lines
5.9 KiB
C
// Derived from Inferno utils/8c/list.c
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// http://code.google.com/p/inferno-os/source/browse/utils/8c/list.c
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//
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// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
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// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
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// Portions Copyright © 1997-1999 Vita Nuova Limited
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// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
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// Portions Copyright © 2004,2006 Bruce Ellis
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// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
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// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
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// Portions Copyright © 2009 The Go Authors. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#include <u.h>
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#include <libc.h>
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#include "gg.h"
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static int sconsize;
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void
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listinit(void)
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{
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fmtinstall('A', Aconv); // as
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fmtinstall('P', Pconv); // Prog*
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fmtinstall('D', Dconv); // Addr*
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fmtinstall('R', Rconv); // reg
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fmtinstall('Y', Yconv); // sconst
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}
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int
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Pconv(Fmt *fp)
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{
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char str[STRINGSZ];
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Prog *p;
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char scale[40];
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p = va_arg(fp->args, Prog*);
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sconsize = 8;
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scale[0] = '\0';
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if(p->from.scale != 0 && (p->as == AGLOBL || p->as == ATEXT))
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snprint(scale, sizeof scale, "%d,", p->from.scale);
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switch(p->as) {
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default:
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snprint(str, sizeof(str), "%.4d (%L) %-7A %D,%s%D",
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p->loc, p->lineno, p->as, &p->from, scale, &p->to);
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break;
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case ADATA:
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sconsize = p->from.scale;
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snprint(str, sizeof(str), "%.4d (%L) %-7A %D/%d,%D",
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p->loc, p->lineno, p->as, &p->from, sconsize, &p->to);
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break;
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case ATEXT:
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snprint(str, sizeof(str), "%.4d (%L) %-7A %D,%s%lD",
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p->loc, p->lineno, p->as, &p->from, scale, &p->to);
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break;
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}
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return fmtstrcpy(fp, str);
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}
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int
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Dconv(Fmt *fp)
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{
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char str[STRINGSZ], s[STRINGSZ];
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Addr *a;
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int i;
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uint32 d1, d2;
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a = va_arg(fp->args, Addr*);
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i = a->type;
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if(i >= D_INDIR) {
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if(a->offset)
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snprint(str, sizeof(str), "%d(%R)", a->offset, i-D_INDIR);
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else
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snprint(str, sizeof(str), "(%R)", i-D_INDIR);
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goto brk;
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}
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switch(i) {
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default:
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if(a->offset)
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snprint(str, sizeof(str), "$%d,%R", a->offset, i);
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else
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snprint(str, sizeof(str), "%R", i);
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break;
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case D_NONE:
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str[0] = 0;
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break;
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case D_BRANCH:
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snprint(str, sizeof(str), "%d", a->branch->loc);
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break;
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case D_EXTERN:
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snprint(str, sizeof(str), "%S+%d(SB)", a->sym, a->offset);
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break;
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case D_STATIC:
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snprint(str, sizeof(str), "%S<>+%d(SB)", a->sym, a->offset);
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break;
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case D_AUTO:
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snprint(str, sizeof(str), "%S+%d(SP)", a->sym, a->offset);
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break;
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case D_PARAM:
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snprint(str, sizeof(str), "%S+%d(FP)", a->sym, a->offset);
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break;
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case D_CONST:
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if(fp->flags & FmtLong) {
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d1 = a->offset;
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d2 = a->offset2;
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snprint(str, sizeof(str), "$%lud-%lud", (ulong)d1, (ulong)d2);
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break;
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}
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snprint(str, sizeof(str), "$%d", a->offset);
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break;
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case D_FCONST:
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snprint(str, sizeof(str), "$(%.17e)", a->dval);
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break;
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case D_SCONST:
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snprint(str, sizeof(str), "$\"%Y\"", a->sval);
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break;
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case D_ADDR:
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a->type = a->index;
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a->index = D_NONE;
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snprint(str, sizeof(str), "$%D", a);
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a->index = a->type;
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a->type = D_ADDR;
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goto conv;
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}
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brk:
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if(a->index != D_NONE) {
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snprint(s, sizeof(s), "(%R*%d)", (int)a->index, (int)a->scale);
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strcat(str, s);
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}
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conv:
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return fmtstrcpy(fp, str);
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}
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static char* regstr[] =
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{
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"AL", /* [D_AL] */
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"CL",
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"DL",
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"BL",
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"AH", /* [D_AH] */
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"CH",
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"DH",
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"BH",
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"AX", /* [D_AX] */
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"CX",
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"DX",
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"BX",
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"SP",
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"BP",
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"SI",
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"DI",
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"F0", /* [D_F0] */
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"F1",
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"F2",
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"F3",
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"F4",
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"F5",
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"F6",
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"F7",
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"CS", /* [D_CS] */
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"SS",
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"DS",
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"ES",
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"FS",
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"GS",
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"GDTR", /* [D_GDTR] */
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"IDTR", /* [D_IDTR] */
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"LDTR", /* [D_LDTR] */
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"MSW", /* [D_MSW] */
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"TASK", /* [D_TASK] */
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"CR0", /* [D_CR] */
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"CR1",
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"CR2",
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"CR3",
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"CR4",
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"CR5",
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"CR6",
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"CR7",
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"DR0", /* [D_DR] */
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"DR1",
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"DR2",
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"DR3",
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"DR4",
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"DR5",
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"DR6",
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"DR7",
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"TR0", /* [D_TR] */
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"TR1",
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"TR2",
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"TR3",
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"TR4",
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"TR5",
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"TR6",
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"TR7",
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"NONE", /* [D_NONE] */
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};
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int
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Rconv(Fmt *fp)
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{
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char str[STRINGSZ];
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int r;
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r = va_arg(fp->args, int);
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if(r < 0 || r >= nelem(regstr) || regstr[r] == nil) {
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snprint(str, sizeof(str), "BAD_R(%d)", r);
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return fmtstrcpy(fp, str);
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}
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return fmtstrcpy(fp, regstr[r]);
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}
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int
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Aconv(Fmt *fp)
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{
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int i;
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i = va_arg(fp->args, int);
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return fmtstrcpy(fp, anames[i]);
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}
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int
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Yconv(Fmt *fp)
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{
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int i, c;
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char str[STRINGSZ], *p, *a;
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a = va_arg(fp->args, char*);
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p = str;
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for(i=0; i<sconsize; i++) {
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c = a[i] & 0xff;
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if((c >= 'a' && c <= 'z') ||
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(c >= 'A' && c <= 'Z') ||
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(c >= '0' && c <= '9')) {
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*p++ = c;
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continue;
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}
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*p++ = '\\';
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switch(c) {
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default:
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if(c < 040 || c >= 0177)
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break; /* not portable */
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p[-1] = c;
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continue;
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case 0:
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*p++ = 'z';
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continue;
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case '\\':
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case '"':
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*p++ = c;
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continue;
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case '\n':
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*p++ = 'n';
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continue;
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case '\t':
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*p++ = 't';
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continue;
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}
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*p++ = (c>>6) + '0';
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*p++ = ((c>>3) & 7) + '0';
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*p++ = (c & 7) + '0';
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}
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*p = 0;
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return fmtstrcpy(fp, str);
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}
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