* Moved lcc and q3asm into code/tools
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Tim Angus
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b1cef6352e
commit
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452 changed files with 0 additions and 0 deletions
228
code/tools/lcc/src/prof.c
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228
code/tools/lcc/src/prof.c
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#include "c.h"
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struct callsite {
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char *file, *name;
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union coordinate {
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unsigned int coord;
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struct { unsigned int y:16,x:10,index:6; } le;
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struct { unsigned int index:6,x:10,y:16; } be;
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} u;
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};
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struct func {
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struct func *link;
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struct caller *callers;
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char *name;
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union coordinate src;
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};
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struct map { /* source code map; 200 coordinates/map */
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int size;
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union coordinate u[200];
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};
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int npoints; /* # of execution points if -b specified */
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int ncalled = -1; /* #times prof.out says current function was called */
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static Symbol YYlink; /* symbol for file's struct _bbdata */
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static Symbol YYcounts; /* symbol for _YYcounts if -b specified */
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static List maplist; /* list of struct map *'s */
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static List filelist; /* list of file names */
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static Symbol funclist; /* list of struct func *'s */
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static Symbol afunc; /* current function's struct func */
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/* bbcall - build tree to set _callsite at call site *cp, emit call site data */
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static void bbcall(Symbol yycounts, Coordinate *cp, Tree *e) {
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static Symbol caller;
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Value v;
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union coordinate u;
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Symbol p = genident(STATIC, array(voidptype, 0, 0), GLOBAL);
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Tree t = *e;
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defglobal(p, LIT);
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defpointer(cp->file ? mkstr(cp->file)->u.c.loc : (Symbol)0);
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defpointer(mkstr(cfunc->name)->u.c.loc);
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if (IR->little_endian) {
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u.le.x = cp->x;
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u.le.y = cp->y;
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} else {
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u.be.x = cp->x;
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u.be.y = cp->y;
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}
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(*IR->defconst)(U, unsignedtype->size, (v.u = u.coord, v));
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if (caller == 0) {
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caller = mksymbol(EXTERN, "_caller", ptr(voidptype));
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caller->defined = 0;
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}
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if (generic((*e)->op) != CALL)
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t = (*e)->kids[0];
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assert(generic(t->op) == CALL);
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t = tree(t->op, t->type,
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tree(RIGHT, t->kids[0]->type,
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t->kids[0],
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tree(RIGHT, t->kids[0]->type, asgn(caller, idtree(p)), t->kids[0])),
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t->kids[1]);
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if (generic((*e)->op) != CALL)
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t = tree((*e)->op, (*e)->type, t, (*e)->kids[1]);
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*e = t;
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}
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/* bbentry - return tree for _prologue(&afunc, &YYlink)' */
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static void bbentry(Symbol yylink, Symbol f) {
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static Symbol prologue;
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afunc = genident(STATIC, array(voidptype, 4, 0), GLOBAL);
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if (prologue == 0) {
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prologue = mksymbol(EXTERN, "_prologue", ftype(inttype, voidptype));
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prologue->defined = 0;
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}
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walk(vcall(prologue, voidtype, pointer(idtree(afunc)), pointer(idtree(yylink)), NULL), 0, 0);
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}
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/* bbexit - return tree for _epilogue(&afunc)' */
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static void bbexit(Symbol yylink, Symbol f, Tree e) {
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static Symbol epilogue;
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if (epilogue == 0) {
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epilogue = mksymbol(EXTERN, "_epilogue", ftype(inttype, voidptype));
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epilogue->defined = 0;
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}
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walk(vcall(epilogue, voidtype, pointer(idtree(afunc)), NULL), 0, 0);
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}
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/* bbfile - add file to list of file names, return its index */
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static int bbfile(char *file) {
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if (file) {
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List lp;
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int i = 1;
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if ((lp = filelist) != NULL)
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do {
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lp = lp->link;
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if (((Symbol)lp->x)->u.c.v.p == file)
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return i;
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i++;
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} while (lp != filelist);
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filelist = append(mkstr(file), filelist);
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return i;
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}
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return 0;
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}
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/* bbfunc - emit function name and src coordinates */
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static void bbfunc(Symbol yylink, Symbol f) {
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Value v;
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union coordinate u;
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defglobal(afunc, DATA);
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defpointer(funclist);
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defpointer(NULL);
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defpointer(mkstr(f->name)->u.c.loc);
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if (IR->little_endian) {
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u.le.x = f->u.f.pt.x;
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u.le.y = f->u.f.pt.y;
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u.le.index = bbfile(f->u.f.pt.file);
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} else {
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u.be.x = f->u.f.pt.x;
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u.be.y = f->u.f.pt.y;
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u.be.index = bbfile(f->u.f.pt.file);
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}
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(*IR->defconst)(U, unsignedtype->size, (v.u = u.coord, v));
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funclist = afunc;
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}
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/* bbincr - build tree to increment execution point at *cp */
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static void bbincr(Symbol yycounts, Coordinate *cp, Tree *e) {
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struct map *mp = maplist->x;
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Tree t;
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/* append *cp to source map */
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if (mp->size >= NELEMS(mp->u)) {
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NEW(mp, PERM);
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mp->size = 0;
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maplist = append(mp, maplist);
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}
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if (IR->little_endian) {
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mp->u[mp->size].le.x = cp->x;
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mp->u[mp->size].le.y = cp->y;
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mp->u[mp->size++].le.index = bbfile(cp->file);
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} else {
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mp->u[mp->size].be.x = cp->x;
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mp->u[mp->size].be.y = cp->y;
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mp->u[mp->size++].be.index = bbfile(cp->file);
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}
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t = incr('+', rvalue((*optree['+'])(ADD, pointer(idtree(yycounts)),
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consttree(npoints++, inttype))), consttree(1, inttype));
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if (*e)
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*e = tree(RIGHT, (*e)->type, t, *e);
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else
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*e = t;
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}
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/* bbvars - emit definition for basic block counting data */
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static void bbvars(Symbol yylink) {
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int i, j, n = npoints;
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Value v;
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struct map **mp;
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Symbol coords, files, *p;
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if (!YYcounts && !yylink)
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return;
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if (YYcounts) {
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if (n <= 0)
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n = 1;
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YYcounts->type = array(unsignedtype, n, 0);
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defglobal(YYcounts, BSS);
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}
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files = genident(STATIC, array(charptype, 1, 0), GLOBAL);
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defglobal(files, LIT);
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for (p = ltov(&filelist, PERM); *p; p++)
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defpointer((*p)->u.c.loc);
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defpointer(NULL);
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coords = genident(STATIC, array(unsignedtype, n, 0), GLOBAL);
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defglobal(coords, LIT);
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for (i = n, mp = ltov(&maplist, PERM); *mp; i -= (*mp)->size, mp++)
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for (j = 0; j < (*mp)->size; j++)
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(*IR->defconst)(U, unsignedtype->size, (v.u = (*mp)->u[j].coord, v));
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if (i > 0)
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(*IR->space)(i*coords->type->type->size);
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defpointer(NULL);
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defglobal(yylink, DATA);
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defpointer(NULL);
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(*IR->defconst)(U, unsignedtype->size, (v.u = n, v));
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defpointer(YYcounts);
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defpointer(coords);
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defpointer(files);
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defpointer(funclist);
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}
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/* profInit - initialize basic block profiling options */
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void prof_init(int argc, char *argv[]) {
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int i;
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static int inited;
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if (inited)
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return;
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inited = 1;
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type_init(argc, argv);
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if (IR) {
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for (i = 1; i < argc; i++)
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if (strncmp(argv[i], "-a", 2) == 0) {
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if (ncalled == -1
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&& process(argv[i][2] ? &argv[i][2] : "prof.out") > 0)
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ncalled = 0;
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} else if ((strcmp(argv[i], "-b") == 0
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|| strcmp(argv[i], "-C") == 0) && YYlink == 0) {
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YYlink = genident(STATIC, array(unsignedtype, 0, 0), GLOBAL);
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attach((Apply)bbentry, YYlink, &events.entry);
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attach((Apply)bbexit, YYlink, &events.returns);
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attach((Apply)bbfunc, YYlink, &events.exit);
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attach((Apply)bbvars, YYlink, &events.end);
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if (strcmp(argv[i], "-b") == 0) {
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YYcounts = genident(STATIC, array(unsignedtype, 0, 0), GLOBAL);
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maplist = append(allocate(sizeof (struct map), PERM), maplist);
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((struct map *)maplist->x)->size = 0;
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attach((Apply)bbcall, YYcounts, &events.calls);
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attach((Apply)bbincr, YYcounts, &events.points);
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}
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}
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}
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}
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