| // Derived from Inferno utils/5c/swt.c |
| // http://code.google.com/p/inferno-os/source/browse/utils/5c/swt.c |
| // |
| // Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. |
| // Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) |
| // Portions Copyright © 1997-1999 Vita Nuova Limited |
| // Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) |
| // Portions Copyright © 2004,2006 Bruce Ellis |
| // Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) |
| // Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others |
| // Portions Copyright © 2009 The Go Authors. All rights reserved. |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining a copy |
| // of this software and associated documentation files (the "Software"), to deal |
| // in the Software without restriction, including without limitation the rights |
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| // copies of the Software, and to permit persons to whom the Software is |
| // furnished to do so, subject to the following conditions: |
| // |
| // The above copyright notice and this permission notice shall be included in |
| // all copies or substantial portions of the Software. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| // THE SOFTWARE. |
| |
| #include <u.h> |
| #include <libc.h> |
| #include "gg.h" |
| |
| int |
| dsname(Sym *sym, int off, char *t, int n) |
| { |
| Prog *p; |
| |
| p = gins(ADATA, N, N); |
| p->from.type = D_OREG; |
| p->from.name = D_EXTERN; |
| p->from.etype = TINT32; |
| p->from.offset = off; |
| p->from.reg = NREG; |
| p->from.sym = linksym(sym); |
| |
| p->reg = n; |
| |
| p->to.type = D_SCONST; |
| p->to.name = D_NONE; |
| p->to.reg = NREG; |
| p->to.offset = 0; |
| memmove(p->to.u.sval, t, n); |
| return off + n; |
| } |
| |
| /* |
| * make a refer to the data s, s+len |
| * emitting DATA if needed. |
| */ |
| void |
| datastring(char *s, int len, Addr *a) |
| { |
| Sym *sym; |
| |
| sym = stringsym(s, len); |
| a->type = D_OREG; |
| a->name = D_EXTERN; |
| a->etype = TINT32; |
| a->offset = widthptr+4; // skip header |
| a->reg = NREG; |
| a->sym = linksym(sym); |
| a->node = sym->def; |
| } |
| |
| /* |
| * make a refer to the string sval, |
| * emitting DATA if needed. |
| */ |
| void |
| datagostring(Strlit *sval, Addr *a) |
| { |
| Sym *sym; |
| |
| sym = stringsym(sval->s, sval->len); |
| a->type = D_OREG; |
| a->name = D_EXTERN; |
| a->etype = TINT32; |
| a->offset = 0; // header |
| a->reg = NREG; |
| a->sym = linksym(sym); |
| a->node = sym->def; |
| } |
| |
| void |
| gdata(Node *nam, Node *nr, int wid) |
| { |
| Prog *p; |
| vlong v; |
| |
| if(nr->op == OLITERAL) { |
| switch(nr->val.ctype) { |
| case CTCPLX: |
| gdatacomplex(nam, nr->val.u.cval); |
| return; |
| case CTSTR: |
| gdatastring(nam, nr->val.u.sval); |
| return; |
| } |
| } |
| |
| if(wid == 8 && is64(nr->type)) { |
| v = mpgetfix(nr->val.u.xval); |
| p = gins(ADATA, nam, nodintconst(v)); |
| p->reg = 4; |
| p = gins(ADATA, nam, nodintconst(v>>32)); |
| p->reg = 4; |
| p->from.offset += 4; |
| return; |
| } |
| p = gins(ADATA, nam, nr); |
| p->reg = wid; |
| } |
| |
| void |
| gdatacomplex(Node *nam, Mpcplx *cval) |
| { |
| Prog *p; |
| int w; |
| |
| w = cplxsubtype(nam->type->etype); |
| w = types[w]->width; |
| |
| p = gins(ADATA, nam, N); |
| p->reg = w; |
| p->to.type = D_FCONST; |
| p->to.u.dval = mpgetflt(&cval->real); |
| |
| p = gins(ADATA, nam, N); |
| p->reg = w; |
| p->from.offset += w; |
| p->to.type = D_FCONST; |
| p->to.u.dval = mpgetflt(&cval->imag); |
| } |
| |
| void |
| gdatastring(Node *nam, Strlit *sval) |
| { |
| Prog *p; |
| Node nod1; |
| |
| p = gins(ADATA, nam, N); |
| datastring(sval->s, sval->len, &p->to); |
| p->reg = types[tptr]->width; |
| p->to.type = D_CONST; |
| p->to.etype = TINT32; |
| //print("%P\n", p); |
| |
| nodconst(&nod1, types[TINT32], sval->len); |
| p = gins(ADATA, nam, &nod1); |
| p->reg = types[TINT32]->width; |
| p->from.offset += types[tptr]->width; |
| } |
| |
| int |
| dstringptr(Sym *s, int off, char *str) |
| { |
| Prog *p; |
| |
| off = rnd(off, widthptr); |
| p = gins(ADATA, N, N); |
| p->from.type = D_OREG; |
| p->from.name = D_EXTERN; |
| p->from.sym = linksym(s); |
| p->from.offset = off; |
| p->reg = widthptr; |
| |
| datastring(str, strlen(str)+1, &p->to); |
| p->to.type = D_CONST; |
| p->to.etype = TINT32; |
| off += widthptr; |
| |
| return off; |
| } |
| |
| int |
| dgostrlitptr(Sym *s, int off, Strlit *lit) |
| { |
| Prog *p; |
| |
| if(lit == nil) |
| return duintptr(s, off, 0); |
| |
| off = rnd(off, widthptr); |
| p = gins(ADATA, N, N); |
| p->from.type = D_OREG; |
| p->from.name = D_EXTERN; |
| p->from.sym = linksym(s); |
| p->from.offset = off; |
| p->reg = widthptr; |
| datagostring(lit, &p->to); |
| p->to.type = D_CONST; |
| p->to.etype = TINT32; |
| off += widthptr; |
| |
| return off; |
| } |
| |
| int |
| dgostringptr(Sym *s, int off, char *str) |
| { |
| int n; |
| Strlit *lit; |
| |
| if(str == nil) |
| return duintptr(s, off, 0); |
| |
| n = strlen(str); |
| lit = mal(sizeof *lit + n); |
| strcpy(lit->s, str); |
| lit->len = n; |
| return dgostrlitptr(s, off, lit); |
| } |
| |
| int |
| dsymptr(Sym *s, int off, Sym *x, int xoff) |
| { |
| Prog *p; |
| |
| off = rnd(off, widthptr); |
| |
| p = gins(ADATA, N, N); |
| p->from.type = D_OREG; |
| p->from.name = D_EXTERN; |
| p->from.sym = linksym(s); |
| p->from.offset = off; |
| p->reg = widthptr; |
| p->to.type = D_CONST; |
| p->to.name = D_EXTERN; |
| p->to.sym = linksym(x); |
| p->to.offset = xoff; |
| off += widthptr; |
| |
| return off; |
| } |
| |
| void |
| nopout(Prog *p) |
| { |
| p->as = ANOP; |
| } |