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Diffstat (limited to 'tools/wrk/deps/luajit/src/lj_debug.c')
-rw-r--r--tools/wrk/deps/luajit/src/lj_debug.c596
1 files changed, 0 insertions, 596 deletions
diff --git a/tools/wrk/deps/luajit/src/lj_debug.c b/tools/wrk/deps/luajit/src/lj_debug.c
deleted file mode 100644
index be7fb2b1f0..0000000000
--- a/tools/wrk/deps/luajit/src/lj_debug.c
+++ /dev/null
@@ -1,596 +0,0 @@
-/*
-** Debugging and introspection.
-** Copyright (C) 2005-2013 Mike Pall. See Copyright Notice in luajit.h
-*/
-
-#define lj_debug_c
-#define LUA_CORE
-
-#include "lj_obj.h"
-#include "lj_err.h"
-#include "lj_debug.h"
-#include "lj_str.h"
-#include "lj_tab.h"
-#include "lj_state.h"
-#include "lj_frame.h"
-#include "lj_bc.h"
-#if LJ_HASJIT
-#include "lj_jit.h"
-#endif
-
-/* -- Frames -------------------------------------------------------------- */
-
-/* Get frame corresponding to a level. */
-cTValue *lj_debug_frame(lua_State *L, int level, int *size)
-{
- cTValue *frame, *nextframe, *bot = tvref(L->stack);
- /* Traverse frames backwards. */
- for (nextframe = frame = L->base-1; frame > bot; ) {
- if (frame_gc(frame) == obj2gco(L))
- level++; /* Skip dummy frames. See lj_meta_call(). */
- if (level-- == 0) {
- *size = (int)(nextframe - frame);
- return frame; /* Level found. */
- }
- nextframe = frame;
- if (frame_islua(frame)) {
- frame = frame_prevl(frame);
- } else {
- if (frame_isvarg(frame))
- level++; /* Skip vararg pseudo-frame. */
- frame = frame_prevd(frame);
- }
- }
- *size = level;
- return NULL; /* Level not found. */
-}
-
-/* Invalid bytecode position. */
-#define NO_BCPOS (~(BCPos)0)
-
-/* Return bytecode position for function/frame or NO_BCPOS. */
-static BCPos debug_framepc(lua_State *L, GCfunc *fn, cTValue *nextframe)
-{
- const BCIns *ins;
- GCproto *pt;
- BCPos pos;
- lua_assert(fn->c.gct == ~LJ_TFUNC || fn->c.gct == ~LJ_TTHREAD);
- if (!isluafunc(fn)) { /* Cannot derive a PC for non-Lua functions. */
- return NO_BCPOS;
- } else if (nextframe == NULL) { /* Lua function on top. */
- void *cf = cframe_raw(L->cframe);
- if (cf == NULL || (char *)cframe_pc(cf) == (char *)cframe_L(cf))
- return NO_BCPOS;
- ins = cframe_pc(cf); /* Only happens during error/hook handling. */
- } else {
- if (frame_islua(nextframe)) {
- ins = frame_pc(nextframe);
- } else if (frame_iscont(nextframe)) {
- ins = frame_contpc(nextframe);
- } else {
- /* Lua function below errfunc/gc/hook: find cframe to get the PC. */
- void *cf = cframe_raw(L->cframe);
- TValue *f = L->base-1;
- if (cf == NULL)
- return NO_BCPOS;
- while (f > nextframe) {
- if (frame_islua(f)) {
- f = frame_prevl(f);
- } else {
- if (frame_isc(f))
- cf = cframe_raw(cframe_prev(cf));
- f = frame_prevd(f);
- }
- }
- if (cframe_prev(cf))
- cf = cframe_raw(cframe_prev(cf));
- ins = cframe_pc(cf);
- }
- }
- pt = funcproto(fn);
- pos = proto_bcpos(pt, ins) - 1;
-#if LJ_HASJIT
- if (pos > pt->sizebc) { /* Undo the effects of lj_trace_exit for JLOOP. */
- GCtrace *T = (GCtrace *)((char *)(ins-1) - offsetof(GCtrace, startins));
- lua_assert(bc_isret(bc_op(ins[-1])));
- pos = proto_bcpos(pt, mref(T->startpc, const BCIns));
- }
-#endif
- return pos;
-}
-
-/* -- Line numbers -------------------------------------------------------- */
-
-/* Get line number for a bytecode position. */
-BCLine LJ_FASTCALL lj_debug_line(GCproto *pt, BCPos pc)
-{
- const void *lineinfo = proto_lineinfo(pt);
- if (pc <= pt->sizebc && lineinfo) {
- BCLine first = pt->firstline;
- if (pc == pt->sizebc) return first + pt->numline;
- if (pc-- == 0) return first;
- if (pt->numline < 256)
- return first + (BCLine)((const uint8_t *)lineinfo)[pc];
- else if (pt->numline < 65536)
- return first + (BCLine)((const uint16_t *)lineinfo)[pc];
- else
- return first + (BCLine)((const uint32_t *)lineinfo)[pc];
- }
- return 0;
-}
-
-/* Get line number for function/frame. */
-static BCLine debug_frameline(lua_State *L, GCfunc *fn, cTValue *nextframe)
-{
- BCPos pc = debug_framepc(L, fn, nextframe);
- if (pc != NO_BCPOS) {
- GCproto *pt = funcproto(fn);
- lua_assert(pc <= pt->sizebc);
- return lj_debug_line(pt, pc);
- }
- return -1;
-}
-
-/* -- Variable names ------------------------------------------------------ */
-
-/* Read ULEB128 value. */
-static uint32_t debug_read_uleb128(const uint8_t **pp)
-{
- const uint8_t *p = *pp;
- uint32_t v = *p++;
- if (LJ_UNLIKELY(v >= 0x80)) {
- int sh = 0;
- v &= 0x7f;
- do { v |= ((*p & 0x7f) << (sh += 7)); } while (*p++ >= 0x80);
- }
- *pp = p;
- return v;
-}
-
-/* Get name of a local variable from slot number and PC. */
-static const char *debug_varname(const GCproto *pt, BCPos pc, BCReg slot)
-{
- const uint8_t *p = proto_varinfo(pt);
- if (p) {
- BCPos lastpc = 0;
- for (;;) {
- const char *name = (const char *)p;
- uint32_t vn = *p++;
- BCPos startpc, endpc;
- if (vn < VARNAME__MAX) {
- if (vn == VARNAME_END) break; /* End of varinfo. */
- } else {
- while (*p++) ; /* Skip over variable name string. */
- }
- lastpc = startpc = lastpc + debug_read_uleb128(&p);
- if (startpc > pc) break;
- endpc = startpc + debug_read_uleb128(&p);
- if (pc < endpc && slot-- == 0) {
- if (vn < VARNAME__MAX) {
-#define VARNAMESTR(name, str) str "\0"
- name = VARNAMEDEF(VARNAMESTR);
-#undef VARNAMESTR
- if (--vn) while (*name++ || --vn) ;
- }
- return name;
- }
- }
- }
- return NULL;
-}
-
-/* Get name of local variable from 1-based slot number and function/frame. */
-static TValue *debug_localname(lua_State *L, const lua_Debug *ar,
- const char **name, BCReg slot1)
-{
- uint32_t offset = (uint32_t)ar->i_ci & 0xffff;
- uint32_t size = (uint32_t)ar->i_ci >> 16;
- TValue *frame = tvref(L->stack) + offset;
- TValue *nextframe = size ? frame + size : NULL;
- GCfunc *fn = frame_func(frame);
- BCPos pc = debug_framepc(L, fn, nextframe);
- if (!nextframe) nextframe = L->top;
- if ((int)slot1 < 0) { /* Negative slot number is for varargs. */
- if (pc != NO_BCPOS) {
- GCproto *pt = funcproto(fn);
- if ((pt->flags & PROTO_VARARG)) {
- slot1 = pt->numparams + (BCReg)(-(int)slot1);
- if (frame_isvarg(frame)) { /* Vararg frame has been set up? (pc!=0) */
- nextframe = frame;
- frame = frame_prevd(frame);
- }
- if (frame + slot1 < nextframe) {
- *name = "(*vararg)";
- return frame+slot1;
- }
- }
- }
- return NULL;
- }
- if (pc != NO_BCPOS &&
- (*name = debug_varname(funcproto(fn), pc, slot1-1)) != NULL)
- ;
- else if (slot1 > 0 && frame + slot1 < nextframe)
- *name = "(*temporary)";
- return frame+slot1;
-}
-
-/* Get name of upvalue. */
-const char *lj_debug_uvname(GCproto *pt, uint32_t idx)
-{
- const uint8_t *p = proto_uvinfo(pt);
- lua_assert(idx < pt->sizeuv);
- if (!p) return "";
- if (idx) while (*p++ || --idx) ;
- return (const char *)p;
-}
-
-/* Get name and value of upvalue. */
-const char *lj_debug_uvnamev(cTValue *o, uint32_t idx, TValue **tvp)
-{
- if (tvisfunc(o)) {
- GCfunc *fn = funcV(o);
- if (isluafunc(fn)) {
- GCproto *pt = funcproto(fn);
- if (idx < pt->sizeuv) {
- *tvp = uvval(&gcref(fn->l.uvptr[idx])->uv);
- return lj_debug_uvname(pt, idx);
- }
- } else {
- if (idx < fn->c.nupvalues) {
- *tvp = &fn->c.upvalue[idx];
- return "";
- }
- }
- }
- return NULL;
-}
-
-/* Deduce name of an object from slot number and PC. */
-const char *lj_debug_slotname(GCproto *pt, const BCIns *ip, BCReg slot,
- const char **name)
-{
- const char *lname;
-restart:
- lname = debug_varname(pt, proto_bcpos(pt, ip), slot);
- if (lname != NULL) { *name = lname; return "local"; }
- while (--ip > proto_bc(pt)) {
- BCIns ins = *ip;
- BCOp op = bc_op(ins);
- BCReg ra = bc_a(ins);
- if (bcmode_a(op) == BCMbase) {
- if (slot >= ra && (op != BC_KNIL || slot <= bc_d(ins)))
- return NULL;
- } else if (bcmode_a(op) == BCMdst && ra == slot) {
- switch (bc_op(ins)) {
- case BC_MOV:
- if (ra == slot) { slot = bc_d(ins); goto restart; }
- break;
- case BC_GGET:
- *name = strdata(gco2str(proto_kgc(pt, ~(ptrdiff_t)bc_d(ins))));
- return "global";
- case BC_TGETS:
- *name = strdata(gco2str(proto_kgc(pt, ~(ptrdiff_t)bc_c(ins))));
- if (ip > proto_bc(pt)) {
- BCIns insp = ip[-1];
- if (bc_op(insp) == BC_MOV && bc_a(insp) == ra+1 &&
- bc_d(insp) == bc_b(ins))
- return "method";
- }
- return "field";
- case BC_UGET:
- *name = lj_debug_uvname(pt, bc_d(ins));
- return "upvalue";
- default:
- return NULL;
- }
- }
- }
- return NULL;
-}
-
-/* Deduce function name from caller of a frame. */
-const char *lj_debug_funcname(lua_State *L, TValue *frame, const char **name)
-{
- TValue *pframe;
- GCfunc *fn;
- BCPos pc;
- if (frame <= tvref(L->stack))
- return NULL;
- if (frame_isvarg(frame))
- frame = frame_prevd(frame);
- pframe = frame_prev(frame);
- fn = frame_func(pframe);
- pc = debug_framepc(L, fn, frame);
- if (pc != NO_BCPOS) {
- GCproto *pt = funcproto(fn);
- const BCIns *ip = &proto_bc(pt)[check_exp(pc < pt->sizebc, pc)];
- MMS mm = bcmode_mm(bc_op(*ip));
- if (mm == MM_call) {
- BCReg slot = bc_a(*ip);
- if (bc_op(*ip) == BC_ITERC) slot -= 3;
- return lj_debug_slotname(pt, ip, slot, name);
- } else if (mm != MM__MAX) {
- *name = strdata(mmname_str(G(L), mm));
- return "metamethod";
- }
- }
- return NULL;
-}
-
-/* -- Source code locations ----------------------------------------------- */
-
-/* Generate shortened source name. */
-void lj_debug_shortname(char *out, GCstr *str)
-{
- const char *src = strdata(str);
- if (*src == '=') {
- strncpy(out, src+1, LUA_IDSIZE); /* Remove first char. */
- out[LUA_IDSIZE-1] = '\0'; /* Ensures null termination. */
- } else if (*src == '@') { /* Output "source", or "...source". */
- size_t len = str->len-1;
- src++; /* Skip the `@' */
- if (len >= LUA_IDSIZE) {
- src += len-(LUA_IDSIZE-4); /* Get last part of file name. */
- *out++ = '.'; *out++ = '.'; *out++ = '.';
- }
- strcpy(out, src);
- } else { /* Output [string "string"]. */
- size_t len; /* Length, up to first control char. */
- for (len = 0; len < LUA_IDSIZE-12; len++)
- if (((const unsigned char *)src)[len] < ' ') break;
- strcpy(out, "[string \""); out += 9;
- if (src[len] != '\0') { /* Must truncate? */
- if (len > LUA_IDSIZE-15) len = LUA_IDSIZE-15;
- strncpy(out, src, len); out += len;
- strcpy(out, "..."); out += 3;
- } else {
- strcpy(out, src); out += len;
- }
- strcpy(out, "\"]");
- }
-}
-
-/* Add current location of a frame to error message. */
-void lj_debug_addloc(lua_State *L, const char *msg,
- cTValue *frame, cTValue *nextframe)
-{
- if (frame) {
- GCfunc *fn = frame_func(frame);
- if (isluafunc(fn)) {
- BCLine line = debug_frameline(L, fn, nextframe);
- if (line >= 0) {
- char buf[LUA_IDSIZE];
- lj_debug_shortname(buf, proto_chunkname(funcproto(fn)));
- lj_str_pushf(L, "%s:%d: %s", buf, line, msg);
- return;
- }
- }
- }
- lj_str_pushf(L, "%s", msg);
-}
-
-/* Push location string for a bytecode position to Lua stack. */
-void lj_debug_pushloc(lua_State *L, GCproto *pt, BCPos pc)
-{
- GCstr *name = proto_chunkname(pt);
- const char *s = strdata(name);
- MSize i, len = name->len;
- BCLine line = lj_debug_line(pt, pc);
- if (*s == '@') {
- s++; len--;
- for (i = len; i > 0; i--)
- if (s[i] == '/' || s[i] == '\\') {
- s += i+1;
- break;
- }
- lj_str_pushf(L, "%s:%d", s, line);
- } else if (len > 40) {
- lj_str_pushf(L, "%p:%d", pt, line);
- } else if (*s == '=') {
- lj_str_pushf(L, "%s:%d", s+1, line);
- } else {
- lj_str_pushf(L, "\"%s\":%d", s, line);
- }
-}
-
-/* -- Public debug API ---------------------------------------------------- */
-
-/* lua_getupvalue() and lua_setupvalue() are in lj_api.c. */
-
-LUA_API const char *lua_getlocal(lua_State *L, const lua_Debug *ar, int n)
-{
- const char *name = NULL;
- if (ar) {
- TValue *o = debug_localname(L, ar, &name, (BCReg)n);
- if (name) {
- copyTV(L, L->top, o);
- incr_top(L);
- }
- } else if (tvisfunc(L->top-1) && isluafunc(funcV(L->top-1))) {
- name = debug_varname(funcproto(funcV(L->top-1)), 0, (BCReg)n-1);
- }
- return name;
-}
-
-LUA_API const char *lua_setlocal(lua_State *L, const lua_Debug *ar, int n)
-{
- const char *name = NULL;
- TValue *o = debug_localname(L, ar, &name, (BCReg)n);
- if (name)
- copyTV(L, o, L->top-1);
- L->top--;
- return name;
-}
-
-int lj_debug_getinfo(lua_State *L, const char *what, lj_Debug *ar, int ext)
-{
- int opt_f = 0, opt_L = 0;
- TValue *frame = NULL;
- TValue *nextframe = NULL;
- GCfunc *fn;
- if (*what == '>') {
- TValue *func = L->top - 1;
- api_check(L, tvisfunc(func));
- fn = funcV(func);
- L->top--;
- what++;
- } else {
- uint32_t offset = (uint32_t)ar->i_ci & 0xffff;
- uint32_t size = (uint32_t)ar->i_ci >> 16;
- lua_assert(offset != 0);
- frame = tvref(L->stack) + offset;
- if (size) nextframe = frame + size;
- lua_assert(frame <= tvref(L->maxstack) &&
- (!nextframe || nextframe <= tvref(L->maxstack)));
- fn = frame_func(frame);
- lua_assert(fn->c.gct == ~LJ_TFUNC);
- }
- for (; *what; what++) {
- if (*what == 'S') {
- if (isluafunc(fn)) {
- GCproto *pt = funcproto(fn);
- BCLine firstline = pt->firstline;
- GCstr *name = proto_chunkname(pt);
- ar->source = strdata(name);
- lj_debug_shortname(ar->short_src, name);
- ar->linedefined = (int)firstline;
- ar->lastlinedefined = (int)(firstline + pt->numline);
- ar->what = firstline ? "Lua" : "main";
- } else {
- ar->source = "=[C]";
- ar->short_src[0] = '[';
- ar->short_src[1] = 'C';
- ar->short_src[2] = ']';
- ar->short_src[3] = '\0';
- ar->linedefined = -1;
- ar->lastlinedefined = -1;
- ar->what = "C";
- }
- } else if (*what == 'l') {
- ar->currentline = frame ? debug_frameline(L, fn, nextframe) : -1;
- } else if (*what == 'u') {
- ar->nups = fn->c.nupvalues;
- if (ext) {
- if (isluafunc(fn)) {
- GCproto *pt = funcproto(fn);
- ar->nparams = pt->numparams;
- ar->isvararg = !!(pt->flags & PROTO_VARARG);
- } else {
- ar->nparams = 0;
- ar->isvararg = 1;
- }
- }
- } else if (*what == 'n') {
- ar->namewhat = frame ? lj_debug_funcname(L, frame, &ar->name) : NULL;
- if (ar->namewhat == NULL) {
- ar->namewhat = "";
- ar->name = NULL;
- }
- } else if (*what == 'f') {
- opt_f = 1;
- } else if (*what == 'L') {
- opt_L = 1;
- } else {
- return 0; /* Bad option. */
- }
- }
- if (opt_f) {
- setfuncV(L, L->top, fn);
- incr_top(L);
- }
- if (opt_L) {
- if (isluafunc(fn)) {
- GCtab *t = lj_tab_new(L, 0, 0);
- GCproto *pt = funcproto(fn);
- const void *lineinfo = proto_lineinfo(pt);
- if (lineinfo) {
- BCLine first = pt->firstline;
- int sz = pt->numline < 256 ? 1 : pt->numline < 65536 ? 2 : 4;
- MSize i, szl = pt->sizebc-1;
- for (i = 0; i < szl; i++) {
- BCLine line = first +
- (sz == 1 ? (BCLine)((const uint8_t *)lineinfo)[i] :
- sz == 2 ? (BCLine)((const uint16_t *)lineinfo)[i] :
- (BCLine)((const uint32_t *)lineinfo)[i]);
- setboolV(lj_tab_setint(L, t, line), 1);
- }
- }
- settabV(L, L->top, t);
- } else {
- setnilV(L->top);
- }
- incr_top(L);
- }
- return 1; /* Ok. */
-}
-
-LUA_API int lua_getinfo(lua_State *L, const char *what, lua_Debug *ar)
-{
- return lj_debug_getinfo(L, what, (lj_Debug *)ar, 0);
-}
-
-LUA_API int lua_getstack(lua_State *L, int level, lua_Debug *ar)
-{
- int size;
- cTValue *frame = lj_debug_frame(L, level, &size);
- if (frame) {
- ar->i_ci = (size << 16) + (int)(frame - tvref(L->stack));
- return 1;
- } else {
- ar->i_ci = level - size;
- return 0;
- }
-}
-
-/* Number of frames for the leading and trailing part of a traceback. */
-#define TRACEBACK_LEVELS1 12
-#define TRACEBACK_LEVELS2 10
-
-LUALIB_API void luaL_traceback (lua_State *L, lua_State *L1, const char *msg,
- int level)
-{
- int top = (int)(L->top - L->base);
- int lim = TRACEBACK_LEVELS1;
- lua_Debug ar;
- if (msg) lua_pushfstring(L, "%s\n", msg);
- lua_pushliteral(L, "stack traceback:");
- while (lua_getstack(L1, level++, &ar)) {
- GCfunc *fn;
- if (level > lim) {
- if (!lua_getstack(L1, level + TRACEBACK_LEVELS2, &ar)) {
- level--;
- } else {
- lua_pushliteral(L, "\n\t...");
- lua_getstack(L1, -10, &ar);
- level = ar.i_ci - TRACEBACK_LEVELS2;
- }
- lim = 2147483647;
- continue;
- }
- lua_getinfo(L1, "Snlf", &ar);
- fn = funcV(L1->top-1); L1->top--;
- if (isffunc(fn) && !*ar.namewhat)
- lua_pushfstring(L, "\n\t[builtin#%d]:", fn->c.ffid);
- else
- lua_pushfstring(L, "\n\t%s:", ar.short_src);
- if (ar.currentline > 0)
- lua_pushfstring(L, "%d:", ar.currentline);
- if (*ar.namewhat) {
- lua_pushfstring(L, " in function " LUA_QS, ar.name);
- } else {
- if (*ar.what == 'm') {
- lua_pushliteral(L, " in main chunk");
- } else if (*ar.what == 'C') {
- lua_pushfstring(L, " at %p", fn->c.f);
- } else {
- lua_pushfstring(L, " in function <%s:%d>",
- ar.short_src, ar.linedefined);
- }
- }
- if ((int)(L->top - L->base) - top >= 15)
- lua_concat(L, (int)(L->top - L->base) - top);
- }
- lua_concat(L, (int)(L->top - L->base) - top);
-}
-
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