http://git-wip-us.apache.org/repos/asf/nifi-minifi-cpp/blob/5977aa27/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_debugger.c
----------------------------------------------------------------------
diff --git
a/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_debugger.c
b/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_debugger.c
deleted file mode 100644
index e0caff6..0000000
---
a/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_debugger.c
+++ /dev/null
@@ -1,2773 +0,0 @@
-/*
- * Duktape debugger
- */
-
-#include "duk_internal.h"
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
-
-/*
- * Helper structs
- */
-
-typedef union {
- void *p;
- duk_uint_t b[1];
- /* Use b[] to access the size of the union, which is strictly not
- * correct. Can't use fixed size unless there's feature detection
- * for pointer byte size.
- */
-} duk__ptr_union;
-
-/*
- * Detach handling
- */
-
-#define DUK__SET_CONN_BROKEN(thr,reason) do { \
- /* For now shared handler is fine. */ \
- duk__debug_do_detach1((thr)->heap, (reason)); \
- } while (0)
-
-DUK_LOCAL void duk__debug_do_detach1(duk_heap *heap, duk_int_t reason) {
- /* Can be called multiple times with no harm. Mark the transport
- * bad (dbg_read_cb == NULL) and clear state except for the detached
- * callback and the udata field. The detached callback is delayed
- * to the message loop so that it can be called between messages;
- * this avoids corner cases related to immediate debugger reattach
- * inside the detached callback.
- */
-
- if (heap->dbg_detaching) {
- DUK_D(DUK_DPRINT("debugger already detaching, ignore detach1"));
- return;
- }
-
- DUK_D(DUK_DPRINT("debugger transport detaching, marking transport
broken"));
-
- heap->dbg_detaching = 1; /* prevent multiple in-progress detaches */
-
- if (heap->dbg_write_cb != NULL) {
- duk_hthread *thr;
-
- thr = heap->heap_thread;
- DUK_ASSERT(thr != NULL);
-
- duk_debug_write_notify(thr, DUK_DBG_CMD_DETACHING);
- duk_debug_write_int(thr, reason);
- duk_debug_write_eom(thr);
- }
-
- heap->dbg_read_cb = NULL;
- heap->dbg_write_cb = NULL;
- heap->dbg_peek_cb = NULL;
- heap->dbg_read_flush_cb = NULL;
- heap->dbg_write_flush_cb = NULL;
- heap->dbg_request_cb = NULL;
- /* heap->dbg_detached_cb: keep */
- /* heap->dbg_udata: keep */
- /* heap->dbg_processing: keep on purpose to avoid debugger re-entry in
detaching state */
- heap->dbg_paused = 0;
- heap->dbg_state_dirty = 0;
- heap->dbg_force_restart = 0;
- heap->dbg_step_type = 0;
- heap->dbg_step_thread = NULL;
- heap->dbg_step_csindex = 0;
- heap->dbg_step_startline = 0;
- heap->dbg_have_next_byte = 0;
-
- /* Ensure there are no stale active breakpoint pointers.
- * Breakpoint list is currently kept - we could empty it
- * here but we'd need to handle refcounts correctly, and
- * we'd need a 'thr' reference for that.
- *
- * XXX: clear breakpoint on either attach or detach?
- */
- heap->dbg_breakpoints_active[0] = (duk_breakpoint *) NULL;
-}
-
-DUK_LOCAL void duk__debug_do_detach2(duk_heap *heap) {
- duk_debug_detached_function detached_cb;
- void *detached_udata;
-
- /* Safe to call multiple times. */
-
- detached_cb = heap->dbg_detached_cb;
- detached_udata = heap->dbg_udata;
- heap->dbg_detached_cb = NULL;
- heap->dbg_udata = NULL;
-
- if (detached_cb) {
- /* Careful here: state must be wiped before the call
- * so that we can cleanly handle a re-attach from
- * inside the callback.
- */
- DUK_D(DUK_DPRINT("detached during message loop, delayed call to
detached_cb"));
- detached_cb(detached_udata);
- }
-
- heap->dbg_detaching = 0;
-}
-
-DUK_INTERNAL void duk_debug_do_detach(duk_heap *heap) {
- duk__debug_do_detach1(heap, 0);
- duk__debug_do_detach2(heap);
-}
-
-/* Called on a read/write error: NULL all callbacks except the detached
- * callback so that we never accidentally call them after a read/write
- * error has been indicated. This is especially important for the transport
- * I/O callbacks to fulfill guaranteed callback semantics.
- */
-DUK_LOCAL void duk__debug_null_most_callbacks(duk_hthread *thr) {
- duk_heap *heap;
- heap = thr->heap;
- DUK_D(DUK_DPRINT("transport read/write error, NULL all callbacks
expected detached"));
- heap->dbg_read_cb = NULL;
- heap->dbg_write_cb = NULL; /* this is especially critical to avoid
another write call in detach1() */
- heap->dbg_peek_cb = NULL;
- heap->dbg_read_flush_cb = NULL;
- heap->dbg_write_flush_cb = NULL;
- heap->dbg_request_cb = NULL;
- /* keep heap->dbg_detached_cb */
-}
-
-/*
- * Debug connection peek and flush primitives
- */
-
-DUK_INTERNAL duk_bool_t duk_debug_read_peek(duk_hthread *thr) {
- duk_heap *heap;
-
- DUK_ASSERT(thr != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
-
- if (heap->dbg_read_cb == NULL) {
- DUK_D(DUK_DPRINT("attempt to peek in detached state, return
zero (= no data)"));
- return 0;
- }
- if (heap->dbg_peek_cb == NULL) {
- DUK_DD(DUK_DDPRINT("no peek callback, return zero (= no
data)"));
- return 0;
- }
-
- return (duk_bool_t) (heap->dbg_peek_cb(heap->dbg_udata) > 0);
-}
-
-DUK_INTERNAL void duk_debug_read_flush(duk_hthread *thr) {
- duk_heap *heap;
-
- DUK_ASSERT(thr != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
-
- if (heap->dbg_read_cb == NULL) {
- DUK_D(DUK_DPRINT("attempt to read flush in detached state,
ignore"));
- return;
- }
- if (heap->dbg_read_flush_cb == NULL) {
- DUK_DD(DUK_DDPRINT("no read flush callback, ignore"));
- return;
- }
-
- heap->dbg_read_flush_cb(heap->dbg_udata);
-}
-
-DUK_INTERNAL void duk_debug_write_flush(duk_hthread *thr) {
- duk_heap *heap;
-
- DUK_ASSERT(thr != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
-
- if (heap->dbg_read_cb == NULL) {
- DUK_D(DUK_DPRINT("attempt to write flush in detached state,
ignore"));
- return;
- }
- if (heap->dbg_write_flush_cb == NULL) {
- DUK_DD(DUK_DDPRINT("no write flush callback, ignore"));
- return;
- }
-
- heap->dbg_write_flush_cb(heap->dbg_udata);
-}
-
-/*
- * Debug connection skip primitives
- */
-
-/* Skip fully. */
-DUK_INTERNAL void duk_debug_skip_bytes(duk_hthread *thr, duk_size_t length) {
- duk_uint8_t dummy[64];
- duk_size_t now;
-
- DUK_ASSERT(thr != NULL);
-
- while (length > 0) {
- now = (length > sizeof(dummy) ? sizeof(dummy) : length);
- duk_debug_read_bytes(thr, dummy, now);
- length -= now;
- }
-}
-
-DUK_INTERNAL void duk_debug_skip_byte(duk_hthread *thr) {
- DUK_ASSERT(thr != NULL);
-
- (void) duk_debug_read_byte(thr);
-}
-
-/*
- * Debug connection read primitives
- */
-
-/* Peek ahead in the stream one byte. */
-DUK_INTERNAL uint8_t duk_debug_peek_byte(duk_hthread *thr) {
- /* It is important not to call this if the last byte read was an EOM.
- * Reading ahead in this scenario would cause unnecessary blocking if
- * another message is not available.
- */
-
- duk_uint8_t x;
-
- x = duk_debug_read_byte(thr);
- thr->heap->dbg_have_next_byte = 1;
- thr->heap->dbg_next_byte = x;
- return x;
-}
-
-/* Read fully. */
-DUK_INTERNAL void duk_debug_read_bytes(duk_hthread *thr, duk_uint8_t *data,
duk_size_t length) {
- duk_heap *heap;
- duk_uint8_t *p;
- duk_size_t left;
- duk_size_t got;
-
- DUK_ASSERT(thr != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
-
- if (heap->dbg_read_cb == NULL) {
- DUK_D(DUK_DPRINT("attempt to read %ld bytes in detached state,
return zero data", (long) length));
- goto fail;
- }
-
- /* NOTE: length may be zero */
- p = data;
- if (length >= 1 && heap->dbg_have_next_byte) {
- heap->dbg_have_next_byte = 0;
- *p++ = heap->dbg_next_byte;
- }
- for (;;) {
- left = (duk_size_t) ((data + length) - p);
- if (left == 0) {
- break;
- }
- DUK_ASSERT(heap->dbg_read_cb != NULL);
- DUK_ASSERT(left >= 1);
-#if defined(DUK_USE_DEBUGGER_TRANSPORT_TORTURE)
- left = 1;
-#endif
- got = heap->dbg_read_cb(heap->dbg_udata, (char *) p, left);
- if (got == 0 || got > left) {
- DUK_D(DUK_DPRINT("connection error during read, return
zero data"));
- duk__debug_null_most_callbacks(thr); /* avoid calling
write callback in detach1() */
- DUK__SET_CONN_BROKEN(thr, 1);
- goto fail;
- }
- p += got;
- }
- return;
-
- fail:
- DUK_MEMZERO((void *) data, (size_t) length);
-}
-
-DUK_INTERNAL duk_uint8_t duk_debug_read_byte(duk_hthread *thr) {
- duk_uint8_t x;
-
- x = 0; /* just in case callback is broken and won't write 'x' */
- duk_debug_read_bytes(thr, &x, 1);
- return x;
-}
-
-DUK_LOCAL duk_uint32_t duk__debug_read_uint32_raw(duk_hthread *thr) {
- duk_uint8_t buf[4];
-
- DUK_ASSERT(thr != NULL);
-
- duk_debug_read_bytes(thr, buf, 4);
- return ((duk_uint32_t) buf[0] << 24) |
- ((duk_uint32_t) buf[1] << 16) |
- ((duk_uint32_t) buf[2] << 8) |
- (duk_uint32_t) buf[3];
-}
-
-DUK_LOCAL duk_uint32_t duk__debug_read_int32_raw(duk_hthread *thr) {
- return (duk_int32_t) duk__debug_read_uint32_raw(thr);
-}
-
-DUK_LOCAL duk_uint16_t duk__debug_read_uint16_raw(duk_hthread *thr) {
- duk_uint8_t buf[2];
-
- DUK_ASSERT(thr != NULL);
-
- duk_debug_read_bytes(thr, buf, 2);
- return ((duk_uint16_t) buf[0] << 8) |
- (duk_uint16_t) buf[1];
-}
-
-DUK_INTERNAL duk_int32_t duk_debug_read_int(duk_hthread *thr) {
- duk_small_uint_t x;
- duk_small_uint_t t;
-
- DUK_ASSERT(thr != NULL);
-
- x = duk_debug_read_byte(thr);
- if (x >= 0xc0) {
- t = duk_debug_read_byte(thr);
- return (duk_int32_t) (((x - 0xc0) << 8) + t);
- } else if (x >= 0x80) {
- return (duk_int32_t) (x - 0x80);
- } else if (x == DUK_DBG_IB_INT4) {
- return (duk_int32_t) duk__debug_read_uint32_raw(thr);
- }
-
- DUK_D(DUK_DPRINT("debug connection error: failed to decode int"));
- DUK__SET_CONN_BROKEN(thr, 1);
- return 0;
-}
-
-DUK_LOCAL duk_hstring *duk__debug_read_hstring_raw(duk_hthread *thr,
duk_uint32_t len) {
- duk_context *ctx = (duk_context *) thr;
- duk_uint8_t buf[31];
- duk_uint8_t *p;
-
- if (len <= sizeof(buf)) {
- duk_debug_read_bytes(thr, buf, (duk_size_t) len);
- duk_push_lstring(ctx, (const char *) buf, (duk_size_t) len);
- } else {
- p = (duk_uint8_t *) duk_push_fixed_buffer(ctx, (duk_size_t)
len);
- DUK_ASSERT(p != NULL);
- duk_debug_read_bytes(thr, p, (duk_size_t) len);
- duk_to_string(ctx, -1);
- }
-
- return duk_require_hstring(ctx, -1);
-}
-
-DUK_INTERNAL duk_hstring *duk_debug_read_hstring(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_t x;
- duk_uint32_t len;
-
- DUK_ASSERT(thr != NULL);
-
- x = duk_debug_read_byte(thr);
- if (x >= 0x60 && x <= 0x7f) {
- /* For short strings, use a fixed temp buffer. */
- len = (duk_uint32_t) (x - 0x60);
- } else if (x == DUK_DBG_IB_STR2) {
- len = (duk_uint32_t) duk__debug_read_uint16_raw(thr);
- } else if (x == DUK_DBG_IB_STR4) {
- len = (duk_uint32_t) duk__debug_read_uint32_raw(thr);
- } else {
- goto fail;
- }
-
- return duk__debug_read_hstring_raw(thr, len);
-
- fail:
- DUK_D(DUK_DPRINT("debug connection error: failed to decode int"));
- DUK__SET_CONN_BROKEN(thr, 1);
- duk_push_hstring_stridx(thr, DUK_STRIDX_EMPTY_STRING); /* always push
some string */
- return duk_require_hstring(ctx, -1);
-}
-
-DUK_LOCAL duk_hbuffer *duk__debug_read_hbuffer_raw(duk_hthread *thr,
duk_uint32_t len) {
- duk_context *ctx = (duk_context *) thr;
- duk_uint8_t *p;
-
- p = (duk_uint8_t *) duk_push_fixed_buffer(ctx, (duk_size_t) len);
- DUK_ASSERT(p != NULL);
- duk_debug_read_bytes(thr, p, (duk_size_t) len);
-
- return duk_require_hbuffer(ctx, -1);
-}
-
-DUK_LOCAL void *duk__debug_read_pointer_raw(duk_hthread *thr) {
- duk_small_uint_t x;
- duk__ptr_union pu;
-
- DUK_ASSERT(thr != NULL);
-
- x = duk_debug_read_byte(thr);
- if (x != sizeof(pu)) {
- goto fail;
- }
- duk_debug_read_bytes(thr, (duk_uint8_t *) &pu.p, sizeof(pu));
-#if defined(DUK_USE_INTEGER_LE)
- duk_byteswap_bytes((duk_uint8_t *) pu.b, sizeof(pu));
-#endif
- return (void *) pu.p;
-
- fail:
- DUK_D(DUK_DPRINT("debug connection error: failed to decode pointer"));
- DUK__SET_CONN_BROKEN(thr, 1);
- return (void *) NULL;
-}
-
-DUK_LOCAL duk_double_t duk__debug_read_double_raw(duk_hthread *thr) {
- duk_double_union du;
-
- DUK_ASSERT(sizeof(du.uc) == 8);
- duk_debug_read_bytes(thr, (duk_uint8_t *) du.uc, sizeof(du.uc));
- DUK_DBLUNION_DOUBLE_NTOH(&du);
- return du.d;
-}
-
-#if 0
-DUK_INTERNAL duk_heaphdr *duk_debug_read_heapptr(duk_hthread *thr) {
- duk_small_uint_t x;
-
- DUK_ASSERT(thr != NULL);
-
- x = duk_debug_read_byte(thr);
- if (x != DUK_DBG_IB_HEAPPTR) {
- goto fail;
- }
-
- return (duk_heaphdr *) duk__debug_read_pointer_raw(thr);
-
- fail:
- DUK_D(DUK_DPRINT("debug connection error: failed to decode heapptr"));
- DUK__SET_CONN_BROKEN(thr, 1);
- return NULL;
-}
-#endif
-
-DUK_INTERNAL duk_heaphdr *duk_debug_read_any_ptr(duk_hthread *thr) {
- duk_small_uint_t x;
-
- DUK_ASSERT(thr != NULL);
-
- x = duk_debug_read_byte(thr);
- switch (x) {
- case DUK_DBG_IB_OBJECT:
- case DUK_DBG_IB_POINTER:
- case DUK_DBG_IB_HEAPPTR:
- /* Accept any pointer-like value; for 'object' dvalue, read
- * and ignore the class number.
- */
- if (x == DUK_DBG_IB_OBJECT) {
- duk_debug_skip_byte(thr);
- }
- break;
- default:
- goto fail;
- }
-
- return (duk_heaphdr *) duk__debug_read_pointer_raw(thr);
-
- fail:
- DUK_D(DUK_DPRINT("debug connection error: failed to decode any pointer
(object, pointer, heapptr)"));
- DUK__SET_CONN_BROKEN(thr, 1);
- return NULL;
-}
-
-DUK_INTERNAL duk_tval *duk_debug_read_tval(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_uint8_t x;
- duk_uint_t t;
- duk_uint32_t len;
-
- DUK_ASSERT(thr != NULL);
-
- x = duk_debug_read_byte(thr);
-
- if (x >= 0xc0) {
- t = (duk_uint_t) (x - 0xc0);
- t = (t << 8) + duk_debug_read_byte(thr);
- duk_push_uint(ctx, (duk_uint_t) t);
- goto return_ptr;
- }
- if (x >= 0x80) {
- duk_push_uint(ctx, (duk_uint_t) (x - 0x80));
- goto return_ptr;
- }
- if (x >= 0x60) {
- len = (duk_uint32_t) (x - 0x60);
- duk__debug_read_hstring_raw(thr, len);
- goto return_ptr;
- }
-
- switch (x) {
- case DUK_DBG_IB_INT4: {
- duk_int32_t i = duk__debug_read_int32_raw(thr);
- duk_push_i32(ctx, i);
- break;
- }
- case DUK_DBG_IB_STR4: {
- len = duk__debug_read_uint32_raw(thr);
- duk__debug_read_hstring_raw(thr, len);
- break;
- }
- case DUK_DBG_IB_STR2: {
- len = duk__debug_read_uint16_raw(thr);
- duk__debug_read_hstring_raw(thr, len);
- break;
- }
- case DUK_DBG_IB_BUF4: {
- len = duk__debug_read_uint32_raw(thr);
- duk__debug_read_hbuffer_raw(thr, len);
- break;
- }
- case DUK_DBG_IB_BUF2: {
- len = duk__debug_read_uint16_raw(thr);
- duk__debug_read_hbuffer_raw(thr, len);
- break;
- }
- case DUK_DBG_IB_UNDEFINED: {
- duk_push_undefined(ctx);
- break;
- }
- case DUK_DBG_IB_NULL: {
- duk_push_null(ctx);
- break;
- }
- case DUK_DBG_IB_TRUE: {
- duk_push_true(ctx);
- break;
- }
- case DUK_DBG_IB_FALSE: {
- duk_push_false(ctx);
- break;
- }
- case DUK_DBG_IB_NUMBER: {
- duk_double_t d;
- d = duk__debug_read_double_raw(thr);
- duk_push_number(ctx, d);
- break;
- }
- case DUK_DBG_IB_OBJECT: {
- duk_heaphdr *h;
- duk_debug_skip_byte(thr);
- h = (duk_heaphdr *) duk__debug_read_pointer_raw(thr);
- duk_push_heapptr(thr, (void *) h);
- break;
- }
- case DUK_DBG_IB_POINTER: {
- void *ptr;
- ptr = duk__debug_read_pointer_raw(thr);
- duk_push_pointer(thr, ptr);
- break;
- }
- case DUK_DBG_IB_LIGHTFUNC: {
- /* XXX: Not needed for now, so not implemented. Note that
- * function pointers may have different size/layout than
- * a void pointer.
- */
- DUK_D(DUK_DPRINT("reading lightfunc values unimplemented"));
- goto fail;
- }
- case DUK_DBG_IB_HEAPPTR: {
- duk_heaphdr *h;
- h = (duk_heaphdr *) duk__debug_read_pointer_raw(thr);
- duk_push_heapptr(thr, (void *) h);
- break;
- }
- case DUK_DBG_IB_UNUSED: /* unused: not accepted in inbound messages */
- default:
- goto fail;
- }
-
- return_ptr:
- return DUK_GET_TVAL_NEGIDX(thr, -1);
-
- fail:
- DUK_D(DUK_DPRINT("debug connection error: failed to decode tval"));
- DUK__SET_CONN_BROKEN(thr, 1);
- return NULL;
-}
-
-/*
- * Debug connection write primitives
- */
-
-/* Write fully. */
-DUK_INTERNAL void duk_debug_write_bytes(duk_hthread *thr, const duk_uint8_t
*data, duk_size_t length) {
- duk_heap *heap;
- const duk_uint8_t *p;
- duk_size_t left;
- duk_size_t got;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(length == 0 || data != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
-
- if (heap->dbg_write_cb == NULL) {
- DUK_D(DUK_DPRINT("attempt to write %ld bytes in detached state,
ignore", (long) length));
- return;
- }
- if (length == 0) {
- /* Avoid doing an actual write callback with length == 0,
- * because that's reserved for a write flush.
- */
- return;
- }
- DUK_ASSERT(data != NULL);
-
- p = data;
- for (;;) {
- left = (duk_size_t) ((data + length) - p);
- if (left == 0) {
- break;
- }
- DUK_ASSERT(heap->dbg_write_cb != NULL);
- DUK_ASSERT(left >= 1);
-#if defined(DUK_USE_DEBUGGER_TRANSPORT_TORTURE)
- left = 1;
-#endif
- got = heap->dbg_write_cb(heap->dbg_udata, (const char *) p,
left);
- if (got == 0 || got > left) {
- duk__debug_null_most_callbacks(thr); /* avoid calling
write callback in detach1() */
- DUK_D(DUK_DPRINT("connection error during write"));
- DUK__SET_CONN_BROKEN(thr, 1);
- return;
- }
- p += got;
- }
-}
-
-DUK_INTERNAL void duk_debug_write_byte(duk_hthread *thr, duk_uint8_t x) {
- duk_debug_write_bytes(thr, (const duk_uint8_t *) &x, 1);
-}
-
-DUK_INTERNAL void duk_debug_write_unused(duk_hthread *thr) {
- duk_debug_write_byte(thr, DUK_DBG_IB_UNUSED);
-}
-
-DUK_INTERNAL void duk_debug_write_undefined(duk_hthread *thr) {
- duk_debug_write_byte(thr, DUK_DBG_IB_UNDEFINED);
-}
-
-#if defined(DUK_USE_DEBUGGER_INSPECT)
-DUK_INTERNAL void duk_debug_write_null(duk_hthread *thr) {
- duk_debug_write_byte(thr, DUK_DBG_IB_NULL);
-}
-#endif
-
-DUK_INTERNAL void duk_debug_write_boolean(duk_hthread *thr, duk_uint_t val) {
- duk_debug_write_byte(thr, val ? DUK_DBG_IB_TRUE : DUK_DBG_IB_FALSE);
-}
-
-/* Write signed 32-bit integer. */
-DUK_INTERNAL void duk_debug_write_int(duk_hthread *thr, duk_int32_t x) {
- duk_uint8_t buf[5];
- duk_size_t len;
-
- DUK_ASSERT(thr != NULL);
-
- if (x >= 0 && x <= 0x3fL) {
- buf[0] = (duk_uint8_t) (0x80 + x);
- len = 1;
- } else if (x >= 0 && x <= 0x3fffL) {
- buf[0] = (duk_uint8_t) (0xc0 + (x >> 8));
- buf[1] = (duk_uint8_t) (x & 0xff);
- len = 2;
- } else {
- /* Signed integers always map to 4 bytes now. */
- buf[0] = (duk_uint8_t) DUK_DBG_IB_INT4;
- buf[1] = (duk_uint8_t) ((x >> 24) & 0xff);
- buf[2] = (duk_uint8_t) ((x >> 16) & 0xff);
- buf[3] = (duk_uint8_t) ((x >> 8) & 0xff);
- buf[4] = (duk_uint8_t) (x & 0xff);
- len = 5;
- }
- duk_debug_write_bytes(thr, buf, len);
-}
-
-/* Write unsigned 32-bit integer. */
-DUK_INTERNAL void duk_debug_write_uint(duk_hthread *thr, duk_uint32_t x) {
- /* The debugger protocol doesn't support a plain integer encoding for
- * the full 32-bit unsigned range (only 32-bit signed). For now,
- * unsigned 32-bit values simply written as signed ones. This is not
- * a concrete issue except for 32-bit heaphdr fields. Proper solutions
- * would be to (a) write such integers as IEEE doubles or (b) add an
- * unsigned 32-bit dvalue.
- */
- if (x >= 0x80000000UL) {
- DUK_D(DUK_DPRINT("writing unsigned integer 0x%08lx as signed
integer",
- (long) x));
- }
- duk_debug_write_int(thr, (duk_int32_t) x);
-}
-
-DUK_INTERNAL void duk_debug_write_strbuf(duk_hthread *thr, const char *data,
duk_size_t length, duk_uint8_t marker_base) {
- duk_uint8_t buf[5];
- duk_size_t buflen;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(length == 0 || data != NULL);
-
- if (length <= 0x1fUL && marker_base == DUK_DBG_IB_STR4) {
- /* For strings, special form for short lengths. */
- buf[0] = (duk_uint8_t) (0x60 + length);
- buflen = 1;
- } else if (length <= 0xffffUL) {
- buf[0] = (duk_uint8_t) (marker_base + 1);
- buf[1] = (duk_uint8_t) (length >> 8);
- buf[2] = (duk_uint8_t) (length & 0xff);
- buflen = 3;
- } else {
- buf[0] = (duk_uint8_t) marker_base;
- buf[1] = (duk_uint8_t) (length >> 24);
- buf[2] = (duk_uint8_t) ((length >> 16) & 0xff);
- buf[3] = (duk_uint8_t) ((length >> 8) & 0xff);
- buf[4] = (duk_uint8_t) (length & 0xff);
- buflen = 5;
- }
-
- duk_debug_write_bytes(thr, (const duk_uint8_t *) buf, buflen);
- duk_debug_write_bytes(thr, (const duk_uint8_t *) data, length);
-}
-
-DUK_INTERNAL void duk_debug_write_string(duk_hthread *thr, const char *data,
duk_size_t length) {
- duk_debug_write_strbuf(thr, data, length, DUK_DBG_IB_STR4);
-}
-
-DUK_INTERNAL void duk_debug_write_cstring(duk_hthread *thr, const char *data) {
- DUK_ASSERT(thr != NULL);
-
- duk_debug_write_string(thr,
- data,
- data ? DUK_STRLEN(data) : 0);
-}
-
-DUK_INTERNAL void duk_debug_write_hstring(duk_hthread *thr, duk_hstring *h) {
- DUK_ASSERT(thr != NULL);
-
- /* XXX: differentiate null pointer from empty string? */
- duk_debug_write_string(thr,
- (h != NULL ? (const char *)
DUK_HSTRING_GET_DATA(h) : NULL),
- (h != NULL ? (duk_size_t)
DUK_HSTRING_GET_BYTELEN(h) : 0));
-}
-
-DUK_LOCAL void duk__debug_write_hstring_safe_top(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_debug_write_hstring(thr, duk_safe_to_hstring(ctx, -1));
-}
-
-DUK_INTERNAL void duk_debug_write_buffer(duk_hthread *thr, const char *data,
duk_size_t length) {
- duk_debug_write_strbuf(thr, data, length, DUK_DBG_IB_BUF4);
-}
-
-DUK_INTERNAL void duk_debug_write_hbuffer(duk_hthread *thr, duk_hbuffer *h) {
- DUK_ASSERT(thr != NULL);
-
- duk_debug_write_buffer(thr,
- (h != NULL ? (const char *)
DUK_HBUFFER_GET_DATA_PTR(thr->heap, h) : NULL),
- (h != NULL ? (duk_size_t)
DUK_HBUFFER_GET_SIZE(h) : 0));
-}
-
-DUK_LOCAL void duk__debug_write_pointer_raw(duk_hthread *thr, void *ptr,
duk_uint8_t ibyte) {
- duk_uint8_t buf[2];
- duk__ptr_union pu;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(sizeof(ptr) >= 1 && sizeof(ptr) <= 16);
- /* ptr may be NULL */
-
- buf[0] = ibyte;
- buf[1] = sizeof(pu);
- duk_debug_write_bytes(thr, buf, 2);
- pu.p = (void *) ptr;
-#if defined(DUK_USE_INTEGER_LE)
- duk_byteswap_bytes((duk_uint8_t *) pu.b, sizeof(pu));
-#endif
- duk_debug_write_bytes(thr, (const duk_uint8_t *) &pu.p, (duk_size_t)
sizeof(pu));
-}
-
-DUK_INTERNAL void duk_debug_write_pointer(duk_hthread *thr, void *ptr) {
- duk__debug_write_pointer_raw(thr, ptr, DUK_DBG_IB_POINTER);
-}
-
-#if defined(DUK_USE_DEBUGGER_DUMPHEAP) || defined(DUK_USE_DEBUGGER_INSPECT)
-DUK_INTERNAL void duk_debug_write_heapptr(duk_hthread *thr, duk_heaphdr *h) {
- duk__debug_write_pointer_raw(thr, (void *) h, DUK_DBG_IB_HEAPPTR);
-}
-#endif /* DUK_USE_DEBUGGER_DUMPHEAP || DUK_USE_DEBUGGER_INSPECT */
-
-DUK_INTERNAL void duk_debug_write_hobject(duk_hthread *thr, duk_hobject *obj) {
- duk_uint8_t buf[3];
- duk__ptr_union pu;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(sizeof(obj) >= 1 && sizeof(obj) <= 16);
- DUK_ASSERT(obj != NULL);
-
- buf[0] = DUK_DBG_IB_OBJECT;
- buf[1] = (duk_uint8_t) DUK_HOBJECT_GET_CLASS_NUMBER(obj);
- buf[2] = sizeof(pu);
- duk_debug_write_bytes(thr, buf, 3);
- pu.p = (void *) obj;
-#if defined(DUK_USE_INTEGER_LE)
- duk_byteswap_bytes((duk_uint8_t *) pu.b, sizeof(pu));
-#endif
- duk_debug_write_bytes(thr, (const duk_uint8_t *) &pu.p, (duk_size_t)
sizeof(pu));
-}
-
-DUK_INTERNAL void duk_debug_write_tval(duk_hthread *thr, duk_tval *tv) {
- duk_c_function lf_func;
- duk_small_uint_t lf_flags;
- duk_uint8_t buf[4];
- duk_double_union du1;
- duk_double_union du2;
- duk_int32_t i32;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(tv != NULL);
-
- switch (DUK_TVAL_GET_TAG(tv)) {
- case DUK_TAG_UNDEFINED:
- duk_debug_write_byte(thr, DUK_DBG_IB_UNDEFINED);
- break;
- case DUK_TAG_UNUSED:
- duk_debug_write_byte(thr, DUK_DBG_IB_UNUSED);
- break;
- case DUK_TAG_NULL:
- duk_debug_write_byte(thr, DUK_DBG_IB_NULL);
- break;
- case DUK_TAG_BOOLEAN:
- DUK_ASSERT(DUK_TVAL_GET_BOOLEAN(tv) == 0 ||
- DUK_TVAL_GET_BOOLEAN(tv) == 1);
- duk_debug_write_boolean(thr, DUK_TVAL_GET_BOOLEAN(tv));
- break;
- case DUK_TAG_POINTER:
- duk_debug_write_pointer(thr, (void *) DUK_TVAL_GET_POINTER(tv));
- break;
- case DUK_TAG_LIGHTFUNC:
- DUK_TVAL_GET_LIGHTFUNC(tv, lf_func, lf_flags);
- buf[0] = DUK_DBG_IB_LIGHTFUNC;
- buf[1] = (duk_uint8_t) (lf_flags >> 8);
- buf[2] = (duk_uint8_t) (lf_flags & 0xff);
- buf[3] = sizeof(lf_func);
- duk_debug_write_bytes(thr, buf, 4);
- duk_debug_write_bytes(thr, (const duk_uint8_t *) &lf_func,
sizeof(lf_func));
- break;
- case DUK_TAG_STRING:
- duk_debug_write_hstring(thr, DUK_TVAL_GET_STRING(tv));
- break;
- case DUK_TAG_OBJECT:
- duk_debug_write_hobject(thr, DUK_TVAL_GET_OBJECT(tv));
- break;
- case DUK_TAG_BUFFER:
- duk_debug_write_hbuffer(thr, DUK_TVAL_GET_BUFFER(tv));
- break;
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
-#endif
- default:
- /* Numbers are normalized to big (network) endian. We can
- * (but are not required) to use integer dvalues when there's
- * no loss of precision.
- *
- * XXX: share check with other code; this check is slow but
- * reliable and doesn't require careful exponent/mantissa
- * mask tricks as in the fastint downgrade code.
- */
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- du1.d = DUK_TVAL_GET_NUMBER(tv);
- i32 = (duk_int32_t) du1.d;
- du2.d = (duk_double_t) i32;
-
- DUK_DD(DUK_DDPRINT("i32=%ld
du1=%02x%02x%02x%02x%02x%02x%02x%02x "
- "du2=%02x%02x%02x%02x%02x%02x%02x%02x",
- (long) i32,
- (unsigned int) du1.uc[0], (unsigned int)
du1.uc[1],
- (unsigned int) du1.uc[2], (unsigned int)
du1.uc[3],
- (unsigned int) du1.uc[4], (unsigned int)
du1.uc[5],
- (unsigned int) du1.uc[6], (unsigned int)
du1.uc[7],
- (unsigned int) du2.uc[0], (unsigned int)
du2.uc[1],
- (unsigned int) du2.uc[2], (unsigned int)
du2.uc[3],
- (unsigned int) du2.uc[4], (unsigned int)
du2.uc[5],
- (unsigned int) du2.uc[6], (unsigned int)
du2.uc[7]));
-
- if (DUK_MEMCMP((const void *) du1.uc, (const void *) du2.uc,
sizeof(du1.uc)) == 0) {
- duk_debug_write_int(thr, i32);
- } else {
- DUK_DBLUNION_DOUBLE_HTON(&du1);
- duk_debug_write_byte(thr, DUK_DBG_IB_NUMBER);
- duk_debug_write_bytes(thr, (const duk_uint8_t *)
du1.uc, sizeof(du1.uc));
- }
- }
-}
-
-#if defined(DUK_USE_DEBUGGER_DUMPHEAP)
-/* Variant for writing duk_tvals so that any heap allocated values are
- * written out as tagged heap pointers.
- */
-DUK_LOCAL void duk__debug_write_tval_heapptr(duk_hthread *thr, duk_tval *tv) {
- if (DUK_TVAL_IS_HEAP_ALLOCATED(tv)) {
- duk_heaphdr *h = DUK_TVAL_GET_HEAPHDR(tv);
- duk_debug_write_heapptr(thr, h);
- } else {
- duk_debug_write_tval(thr, tv);
- }
-}
-#endif /* DUK_USE_DEBUGGER_DUMPHEAP */
-
-/*
- * Debug connection message write helpers
- */
-
-#if 0 /* unused */
-DUK_INTERNAL void duk_debug_write_request(duk_hthread *thr, duk_small_uint_t
command) {
- duk_debug_write_byte(thr, DUK_DBG_IB_REQUEST);
- duk_debug_write_int(thr, command);
-}
-#endif
-
-DUK_INTERNAL void duk_debug_write_reply(duk_hthread *thr) {
- duk_debug_write_byte(thr, DUK_DBG_IB_REPLY);
-}
-
-DUK_INTERNAL void duk_debug_write_error_eom(duk_hthread *thr, duk_small_uint_t
err_code, const char *msg) {
- /* Allow NULL 'msg' */
- duk_debug_write_byte(thr, DUK_DBG_IB_ERROR);
- duk_debug_write_int(thr, (duk_int32_t) err_code);
- duk_debug_write_cstring(thr, msg);
- duk_debug_write_eom(thr);
-}
-
-DUK_INTERNAL void duk_debug_write_notify(duk_hthread *thr, duk_small_uint_t
command) {
- duk_debug_write_byte(thr, DUK_DBG_IB_NOTIFY);
- duk_debug_write_int(thr, command);
-}
-
-DUK_INTERNAL void duk_debug_write_eom(duk_hthread *thr) {
- duk_debug_write_byte(thr, DUK_DBG_IB_EOM);
-
- /* As an initial implementation, write flush after every EOM (and the
- * version identifier). A better implementation would flush only when
- * Duktape is finished processing messages so that a flush only happens
- * after all outbound messages are finished on that occasion.
- */
- duk_debug_write_flush(thr);
-}
-
-/*
- * Status message and helpers
- */
-
-DUK_INTERNAL duk_uint_fast32_t duk_debug_curr_line(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_activation *act;
- duk_uint_fast32_t line;
- duk_uint_fast32_t pc;
-
- act = duk_hthread_get_current_activation(thr); /* may be NULL */
- if (act == NULL) {
- return 0;
- }
-
- /* We're conceptually between two opcodes; act->pc indicates the next
- * instruction to be executed. This is usually the correct pc/line to
- * indicate in Status. (For the 'debugger' statement this now reports
- * the pc/line after the debugger statement because the debugger opcode
- * has already been executed.)
- */
-
- pc = duk_hthread_get_act_curr_pc(thr, act);
-
- /* XXX: this should be optimized to be a raw query and avoid valstack
- * operations if possible.
- */
- duk_push_tval(ctx, &act->tv_func);
- line = duk_hobject_pc2line_query(ctx, -1, pc);
- duk_pop(ctx);
- return line;
-}
-
-DUK_INTERNAL void duk_debug_send_status(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_activation *act;
-
- duk_debug_write_notify(thr, DUK_DBG_CMD_STATUS);
- duk_debug_write_int(thr, thr->heap->dbg_paused);
-
- DUK_ASSERT_DISABLE(thr->callstack_top >= 0); /* unsigned */
- if (thr->callstack_top == 0) {
- duk_debug_write_undefined(thr);
- duk_debug_write_undefined(thr);
- duk_debug_write_int(thr, 0);
- duk_debug_write_int(thr, 0);
- } else {
- act = thr->callstack + thr->callstack_top - 1;
- duk_push_tval(ctx, &act->tv_func);
- duk_get_prop_string(ctx, -1, "fileName");
- duk__debug_write_hstring_safe_top(thr);
- duk_get_prop_string(ctx, -2, "name");
- duk__debug_write_hstring_safe_top(thr);
- duk_pop_3(ctx);
- /* Report next pc/line to be executed. */
- duk_debug_write_uint(thr, (duk_uint32_t)
duk_debug_curr_line(thr));
- duk_debug_write_uint(thr, (duk_uint32_t)
duk_hthread_get_act_curr_pc(thr, act));
- }
-
- duk_debug_write_eom(thr);
-}
-
-#if defined(DUK_USE_DEBUGGER_THROW_NOTIFY)
-DUK_INTERNAL void duk_debug_send_throw(duk_hthread *thr, duk_bool_t fatal) {
- /*
- * NFY <int: 5> <int: fatal> <str: msg> <str: filename> <int:
linenumber> EOM
- */
-
- duk_context *ctx = (duk_context *) thr;
- duk_activation *act;
- duk_uint32_t pc;
-
- DUK_ASSERT(thr->valstack_top > thr->valstack); /* At least: ... [err]
*/
-
- duk_debug_write_notify(thr, DUK_DBG_CMD_THROW);
- duk_debug_write_int(thr, fatal);
-
- /* Report thrown value to client coerced to string */
- duk_dup(ctx, -1);
- duk__debug_write_hstring_safe_top(thr);
- duk_pop(ctx);
-
- if (duk_is_error(ctx, -1)) {
- /* Error instance, use augmented error data directly */
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_FILE_NAME);
- duk__debug_write_hstring_safe_top(thr);
- duk_get_prop_stridx(ctx, -2, DUK_STRIDX_LINE_NUMBER);
- duk_debug_write_uint(thr, duk_get_uint(ctx, -1));
- } else {
- /* For anything other than an Error instance, we calculate the
error
- * location directly from the current activation.
- */
- act = thr->callstack + thr->callstack_top - 1;
- duk_push_tval(ctx, &act->tv_func);
- duk_get_prop_string(ctx, -1, "fileName");
- duk__debug_write_hstring_safe_top(thr);
- pc = duk_hthread_get_act_prev_pc(thr, act);
- duk_debug_write_uint(thr, (duk_uint32_t)
duk_hobject_pc2line_query(ctx, -2, pc));
- }
- duk_pop_2(ctx); /* shared pop */
-
- duk_debug_write_eom(thr);
-}
-#endif /* DUK_USE_DEBUGGER_THROW_NOTIFY */
-
-/*
- * Debug message processing
- */
-
-/* Skip dvalue. */
-DUK_LOCAL duk_bool_t duk__debug_skip_dvalue(duk_hthread *thr) {
- duk_uint8_t x;
- duk_uint32_t len;
-
- x = duk_debug_read_byte(thr);
-
- if (x >= 0xc0) {
- duk_debug_skip_byte(thr);
- return 0;
- }
- if (x >= 0x80) {
- return 0;
- }
- if (x >= 0x60) {
- duk_debug_skip_bytes(thr, x - 0x60);
- return 0;
- }
- switch(x) {
- case DUK_DBG_IB_EOM:
- return 1; /* Return 1: got EOM */
- case DUK_DBG_IB_REQUEST:
- case DUK_DBG_IB_REPLY:
- case DUK_DBG_IB_ERROR:
- case DUK_DBG_IB_NOTIFY:
- break;
- case DUK_DBG_IB_INT4:
- (void) duk__debug_read_uint32_raw(thr);
- break;
- case DUK_DBG_IB_STR4:
- case DUK_DBG_IB_BUF4:
- len = duk__debug_read_uint32_raw(thr);
- duk_debug_skip_bytes(thr, len);
- break;
- case DUK_DBG_IB_STR2:
- case DUK_DBG_IB_BUF2:
- len = duk__debug_read_uint16_raw(thr);
- duk_debug_skip_bytes(thr, len);
- break;
- case DUK_DBG_IB_UNUSED:
- case DUK_DBG_IB_UNDEFINED:
- case DUK_DBG_IB_NULL:
- case DUK_DBG_IB_TRUE:
- case DUK_DBG_IB_FALSE:
- break;
- case DUK_DBG_IB_NUMBER:
- duk_debug_skip_bytes(thr, 8);
- break;
- case DUK_DBG_IB_OBJECT:
- duk_debug_skip_byte(thr);
- len = duk_debug_read_byte(thr);
- duk_debug_skip_bytes(thr, len);
- break;
- case DUK_DBG_IB_POINTER:
- case DUK_DBG_IB_HEAPPTR:
- len = duk_debug_read_byte(thr);
- duk_debug_skip_bytes(thr, len);
- break;
- case DUK_DBG_IB_LIGHTFUNC:
- duk_debug_skip_bytes(thr, 2);
- len = duk_debug_read_byte(thr);
- duk_debug_skip_bytes(thr, len);
- break;
- default:
- goto fail;
- }
-
- return 0;
-
- fail:
- DUK__SET_CONN_BROKEN(thr, 1);
- return 1; /* Pretend like we got EOM */
-}
-
-/* Skip dvalues to EOM. */
-DUK_LOCAL void duk__debug_skip_to_eom(duk_hthread *thr) {
- for (;;) {
- if (duk__debug_skip_dvalue(thr)) {
- break;
- }
- }
-}
-
-/*
- * Simple commands
- */
-
-DUK_LOCAL void duk__debug_handle_basic_info(duk_hthread *thr, duk_heap *heap) {
- DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command Version"));
-
- duk_debug_write_reply(thr);
- duk_debug_write_int(thr, DUK_VERSION);
- duk_debug_write_cstring(thr, DUK_GIT_DESCRIBE);
- duk_debug_write_cstring(thr, DUK_USE_TARGET_INFO);
-#if defined(DUK_USE_DOUBLE_LE)
- duk_debug_write_int(thr, 1);
-#elif defined(DUK_USE_DOUBLE_ME)
- duk_debug_write_int(thr, 2);
-#elif defined(DUK_USE_DOUBLE_BE)
- duk_debug_write_int(thr, 3);
-#else
- duk_debug_write_int(thr, 0);
-#endif
- duk_debug_write_int(thr, (duk_int_t) sizeof(void *));
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_trigger_status(duk_hthread *thr, duk_heap
*heap) {
- DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command TriggerStatus"));
-
- duk_debug_write_reply(thr);
- duk_debug_write_eom(thr);
- heap->dbg_state_dirty = 1;
-}
-
-DUK_LOCAL void duk__debug_handle_pause(duk_hthread *thr, duk_heap *heap) {
- DUK_D(DUK_DPRINT("debug command Pause"));
-
- DUK_HEAP_SET_PAUSED(heap);
- duk_debug_write_reply(thr);
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_resume(duk_hthread *thr, duk_heap *heap) {
- DUK_D(DUK_DPRINT("debug command Resume"));
-
- DUK_HEAP_CLEAR_PAUSED(heap);
- duk_debug_write_reply(thr);
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_step(duk_hthread *thr, duk_heap *heap,
duk_int32_t cmd) {
- duk_small_uint_t step_type;
- duk_uint_fast32_t line;
-
- DUK_D(DUK_DPRINT("debug command StepInto/StepOver/StepOut: %d", (int)
cmd));
-
- if (cmd == DUK_DBG_CMD_STEPINTO) {
- step_type = DUK_STEP_TYPE_INTO;
- } else if (cmd == DUK_DBG_CMD_STEPOVER) {
- step_type = DUK_STEP_TYPE_OVER;
- } else {
- DUK_ASSERT(cmd == DUK_DBG_CMD_STEPOUT);
- step_type = DUK_STEP_TYPE_OUT;
- }
-
- line = duk_debug_curr_line(thr);
- if (line > 0) {
- heap->dbg_paused = 0;
- heap->dbg_step_type = step_type;
- heap->dbg_step_thread = thr;
- heap->dbg_step_csindex = thr->callstack_top - 1;
- heap->dbg_step_startline = line;
- heap->dbg_state_dirty = 1;
- } else {
- DUK_D(DUK_DPRINT("cannot determine current line,
stepinto/stepover/stepout ignored"));
- }
- duk_debug_write_reply(thr);
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_list_break(duk_hthread *thr, duk_heap *heap) {
- duk_small_int_t i;
-
- DUK_D(DUK_DPRINT("debug command ListBreak"));
- duk_debug_write_reply(thr);
- for (i = 0; i < (duk_small_int_t) heap->dbg_breakpoint_count; i++) {
- duk_debug_write_hstring(thr, heap->dbg_breakpoints[i].filename);
- duk_debug_write_uint(thr, (duk_uint32_t)
heap->dbg_breakpoints[i].line);
- }
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_add_break(duk_hthread *thr, duk_heap *heap) {
- duk_hstring *filename;
- duk_uint32_t linenumber;
- duk_small_int_t idx;
-
- DUK_UNREF(heap);
-
- filename = duk_debug_read_hstring(thr);
- linenumber = (duk_uint32_t) duk_debug_read_int(thr);
- DUK_D(DUK_DPRINT("debug command AddBreak: %!O:%ld", (duk_hobject *)
filename, (long) linenumber));
- idx = duk_debug_add_breakpoint(thr, filename, linenumber);
- if (idx >= 0) {
- duk_debug_write_reply(thr);
- duk_debug_write_int(thr, (duk_int32_t) idx);
- duk_debug_write_eom(thr);
- } else {
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_TOOMANY, "no space
for breakpoint");
- }
-}
-
-DUK_LOCAL void duk__debug_handle_del_break(duk_hthread *thr, duk_heap *heap) {
- duk_small_uint_t idx;
-
- DUK_UNREF(heap);
-
- DUK_D(DUK_DPRINT("debug command DelBreak"));
- idx = (duk_small_uint_t) duk_debug_read_int(thr);
- if (duk_debug_remove_breakpoint(thr, idx)) {
- duk_debug_write_reply(thr);
- duk_debug_write_eom(thr);
- } else {
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND, "invalid
breakpoint index");
- }
-}
-
-DUK_LOCAL void duk__debug_handle_get_var(duk_hthread *thr, duk_heap *heap) {
- duk_context *ctx = (duk_context *) thr;
- duk_hstring *str;
- duk_bool_t rc;
- duk_int32_t level;
-
- DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command GetVar"));
-
- str = duk_debug_read_hstring(thr); /* push to stack */
- DUK_ASSERT(str != NULL);
- if (duk_debug_peek_byte(thr) != DUK_DBG_IB_EOM) {
- level = duk_debug_read_int(thr); /* optional callstack level */
- if (level >= 0 || -level > (duk_int32_t) thr->callstack_top) {
- DUK_D(DUK_DPRINT("invalid callstack level for GetVar"));
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND,
"invalid callstack level");
- return;
- }
- } else {
- level = -1;
- }
-
- if (thr->callstack_top > 0) {
- rc = duk_js_getvar_activation(thr,
- thr->callstack +
thr->callstack_top + level,
- str,
- 0);
- } else {
- /* No activation, no variable access. Could also pretend
- * we're in the global program context and read stuff off
- * the global object.
- */
- DUK_D(DUK_DPRINT("callstack empty, no activation -> ignore
getvar"));
- rc = 0;
- }
-
- duk_debug_write_reply(thr);
- if (rc) {
- duk_debug_write_int(thr, 1);
- DUK_ASSERT(duk_get_tval(ctx, -2) != NULL);
- duk_debug_write_tval(thr, duk_get_tval(ctx, -2));
- } else {
- duk_debug_write_int(thr, 0);
- duk_debug_write_unused(thr);
- }
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_put_var(duk_hthread *thr, duk_heap *heap) {
- duk_hstring *str;
- duk_tval *tv;
- duk_int32_t level;
-
- DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command PutVar"));
-
- str = duk_debug_read_hstring(thr); /* push to stack */
- DUK_ASSERT(str != NULL);
- tv = duk_debug_read_tval(thr);
- if (tv == NULL) {
- /* detached */
- return;
- }
- if (duk_debug_peek_byte(thr) != DUK_DBG_IB_EOM) {
- level = duk_debug_read_int(thr); /* optional callstack level */
- if (level >= 0 || -level > (duk_int32_t) thr->callstack_top) {
- DUK_D(DUK_DPRINT("invalid callstack level for PutVar"));
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND,
"invalid callstack level");
- return;
- }
- } else {
- level = -1;
- }
-
- if (thr->callstack_top > 0) {
- duk_js_putvar_activation(thr,
- thr->callstack + thr->callstack_top +
level,
- str,
- tv,
- 0);
- } else {
- DUK_D(DUK_DPRINT("callstack empty, no activation -> ignore
putvar"));
- }
-
- /* XXX: Current putvar implementation doesn't have a success flag,
- * add one and send to debug client?
- */
- duk_debug_write_reply(thr);
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_get_call_stack(duk_hthread *thr, duk_heap
*heap) {
- duk_context *ctx = (duk_context *) thr;
- duk_hthread *curr_thr = thr;
- duk_activation *curr_act;
- duk_uint_fast32_t pc;
- duk_uint_fast32_t line;
- duk_size_t i;
-
- DUK_ASSERT(thr != NULL);
- DUK_UNREF(heap);
-
- duk_debug_write_reply(thr);
- while (curr_thr != NULL) {
- i = curr_thr->callstack_top;
- while (i > 0) {
- i--;
- curr_act = curr_thr->callstack + i;
-
- /* PC/line semantics here are:
- * - For callstack top we're conceptually between two
- * opcodes and current PC indicates next line to
- * execute, so report that (matches Status).
- * - For other activations we're conceptually still
- * executing the instruction at PC-1, so report that
- * (matches error stacktrace behavior).
- * - See:
https://github.com/svaarala/duktape/issues/281
- */
-
- /* XXX: optimize to use direct reads, i.e. avoid
- * value stack operations.
- */
- duk_push_tval(ctx, &curr_act->tv_func);
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_FILE_NAME);
- duk__debug_write_hstring_safe_top(thr);
- duk_get_prop_stridx(ctx, -2, DUK_STRIDX_NAME);
- duk__debug_write_hstring_safe_top(thr);
- pc = duk_hthread_get_act_curr_pc(thr, curr_act);
- if (i != curr_thr->callstack_top - 1 && pc > 0) {
- pc--;
- }
- line = duk_hobject_pc2line_query(ctx, -3, pc);
- duk_debug_write_uint(thr, (duk_uint32_t) line);
- duk_debug_write_uint(thr, (duk_uint32_t) pc);
- duk_pop_3(ctx);
- }
- curr_thr = curr_thr->resumer;
- }
- /* SCANBUILD: warning about 'thr' potentially being NULL here,
- * warning is incorrect because thr != NULL always here.
- */
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_get_locals(duk_hthread *thr, duk_heap *heap) {
- duk_context *ctx = (duk_context *) thr;
- duk_activation *curr_act;
- duk_int32_t level;
- duk_hstring *varname;
-
- DUK_UNREF(heap);
-
- if (duk_debug_peek_byte(thr) != DUK_DBG_IB_EOM) {
- level = duk_debug_read_int(thr); /* optional callstack level */
- if (level >= 0 || -level > (duk_int32_t) thr->callstack_top) {
- DUK_D(DUK_DPRINT("invalid callstack level for
GetLocals"));
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND,
"invalid callstack level");
- return;
- }
- duk_debug_write_reply(thr);
- } else {
- duk_debug_write_reply(thr);
- if (thr->callstack_top == 0) {
- goto callstack_empty;
- }
- level = -1;
- }
-
- curr_act = thr->callstack + thr->callstack_top + level;
-
- /* XXX: several nice-to-have improvements here:
- * - Use direct reads avoiding value stack operations
- * - Avoid triggering getters, indicate getter values to debug client
- * - If side effects are possible, add error catching
- */
-
- duk_push_tval(ctx, &curr_act->tv_func);
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_VARMAP);
- if (duk_is_object(ctx, -1)) {
- duk_enum(ctx, -1, 0 /*enum_flags*/);
- while (duk_next(ctx, -1 /*enum_index*/, 0 /*get_value*/)) {
- varname = duk_get_hstring(ctx, -1);
- DUK_ASSERT(varname != NULL);
-
- duk_js_getvar_activation(thr, curr_act, varname, 0
/*throw_flag*/);
- /* [ ... func varmap enum key value this ] */
- duk_debug_write_hstring(thr, duk_get_hstring(ctx, -3));
- duk_debug_write_tval(thr, duk_get_tval(ctx, -2));
- duk_pop_3(ctx); /* -> [ ... func varmap enum ] */
- }
- } else {
- DUK_D(DUK_DPRINT("varmap is not an object in GetLocals,
ignore"));
- }
-
- callstack_empty:
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_eval(duk_hthread *thr, duk_heap *heap) {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_t call_flags;
- duk_int_t call_ret;
- duk_small_int_t eval_err;
- duk_int32_t level;
-
- DUK_UNREF(heap);
-
- DUK_D(DUK_DPRINT("debug command Eval"));
-
- /* The eval code is executed within the lexical environment of a
specified
- * activation. For now, use global object eval() function, with the
eval
- * considered a 'direct call to eval'.
- *
- * Callstack level for debug commands only affects scope -- the
callstack
- * as seen by, e.g. Duktape.act() will be the same regardless.
- */
-
- /* nargs == 2 so we can pass a callstack level to eval(). */
- duk_push_c_function(ctx, duk_bi_global_object_eval, 2 /*nargs*/);
- duk_push_undefined(ctx); /* 'this' binding shouldn't matter here */
-
- (void) duk_debug_read_hstring(thr);
- if (duk_debug_peek_byte(thr) != DUK_DBG_IB_EOM) {
- level = duk_debug_read_int(thr); /* optional callstack level */
- if (level >= 0 || -level > (duk_int32_t) thr->callstack_top) {
- DUK_D(DUK_DPRINT("invalid callstack level for Eval"));
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND,
"invalid callstack level");
- return;
- }
- }
- else {
- level = -1;
- }
- DUK_ASSERT(level < 0 && -level <= (duk_int32_t) thr->callstack_top);
- duk_push_int(ctx, level - 1); /* compensate for eval() call */
-
- /* [ ... eval "eval" eval_input level ] */
-
- call_flags = 0;
- if (thr->callstack_top >= (duk_size_t) -level) {
- duk_activation *act;
- duk_hobject *fun;
-
- act = thr->callstack + thr->callstack_top + level;
- fun = DUK_ACT_GET_FUNC(act);
- if (fun != NULL && DUK_HOBJECT_IS_COMPILEDFUNCTION(fun)) {
- /* Direct eval requires that there's a current
- * activation and it is an Ecmascript function.
- * When Eval is executed from e.g. cooperate API
- * call we'll need to do an indirect eval instead.
- */
- call_flags |= DUK_CALL_FLAG_DIRECT_EVAL;
- }
- }
-
- call_ret = duk_handle_call_protected(thr, 2 /*num_stack_args*/,
call_flags);
-
- if (call_ret == DUK_EXEC_SUCCESS) {
- eval_err = 0;
- /* Use result value as is. */
- } else {
- /* For errors a string coerced result is most informative
- * right now, as the debug client doesn't have the capability
- * to traverse the error object.
- */
- eval_err = 1;
- duk_safe_to_string(ctx, -1);
- }
-
- /* [ ... result ] */
-
- duk_debug_write_reply(thr);
- duk_debug_write_int(thr, (duk_int32_t) eval_err);
- DUK_ASSERT(duk_get_tval(ctx, -1) != NULL);
- duk_debug_write_tval(thr, duk_get_tval(ctx, -1));
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_detach(duk_hthread *thr, duk_heap *heap) {
- DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command Detach"));
-
- duk_debug_write_reply(thr);
- duk_debug_write_eom(thr);
-
- DUK_D(DUK_DPRINT("debug connection detached, mark broken"));
- DUK__SET_CONN_BROKEN(thr, 0); /* not an error */
-}
-
-DUK_LOCAL void duk__debug_handle_apprequest(duk_hthread *thr, duk_heap *heap) {
- duk_context *ctx = (duk_context *) thr;
- duk_idx_t old_top;
-
- DUK_D(DUK_DPRINT("debug command AppRequest"));
-
- old_top = duk_get_top(ctx); /* save stack top */
-
- if (heap->dbg_request_cb != NULL) {
- duk_idx_t nrets;
- duk_idx_t nvalues = 0;
- duk_idx_t top, idx;
-
- /* Read tvals from the message and push them onto the valstack,
- * then call the request callback to process the request.
- */
- while (duk_debug_peek_byte(thr) != DUK_DBG_IB_EOM) {
- duk_tval *tv;
- if (!duk_check_stack(ctx, 1)) {
- DUK_D(DUK_DPRINT("failed to allocate space for
request dvalue(s)"));
- goto fail;
- }
- tv = duk_debug_read_tval(thr); /* push to stack */
- if (tv == NULL) {
- /* detached */
- return;
- }
- nvalues++;
- }
- DUK_ASSERT(duk_get_top(ctx) == old_top + nvalues);
-
- /* Request callback should push values for reply to client onto
valstack */
- DUK_D(DUK_DPRINT("calling into AppRequest request_cb with
nvalues=%ld, old_top=%ld, top=%ld",
- (long) nvalues, (long) old_top, (long)
duk_get_top(ctx)));
- nrets = heap->dbg_request_cb(ctx, heap->dbg_udata, nvalues);
- DUK_D(DUK_DPRINT("returned from AppRequest request_cb;
nvalues=%ld -> nrets=%ld, old_top=%ld, top=%ld",
- (long) nvalues, (long) nrets, (long) old_top,
(long) duk_get_top(ctx)));
- if (nrets >= 0) {
- DUK_ASSERT(duk_get_top(ctx) >= old_top + nrets);
- if (duk_get_top(ctx) < old_top + nrets) {
- DUK_D(DUK_DPRINT("AppRequest callback doesn't
match value stack configuration, "
- "top=%ld < old_top=%ld +
nrets=%ld; "
- "this might mean it's unsafe
to continue!",
- (long) duk_get_top(ctx),
(long) old_top, (long) nrets));
- goto fail;
- }
-
- /* Reply with tvals pushed by request callback */
- duk_debug_write_byte(thr, DUK_DBG_IB_REPLY);
- top = duk_get_top(ctx);
- for (idx = top - nrets; idx < top; idx++) {
- duk_debug_write_tval(thr,
DUK_GET_TVAL_POSIDX(ctx, idx));
- }
- duk_debug_write_eom(thr);
- } else {
- DUK_ASSERT(duk_get_top(ctx) >= old_top + 1);
- if (duk_get_top(ctx) < old_top + 1) {
- DUK_D(DUK_DPRINT("request callback return value
doesn't match value stack configuration"));
- goto fail;
- }
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_APPLICATION,
duk_get_string(ctx, -1));
- }
-
- duk_set_top(ctx, old_top); /* restore stack top */
- } else {
- DUK_D(DUK_DPRINT("no request callback, treat AppRequest as
unsupported"));
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNSUPPORTED,
"AppRequest unsupported by target");
- }
-
- return;
-
- fail:
- duk_set_top(ctx, old_top); /* restore stack top */
- DUK__SET_CONN_BROKEN(thr, 1);
-}
-
-/*
- * DumpHeap command
- */
-
-#if defined(DUK_USE_DEBUGGER_DUMPHEAP)
-/* XXX: this has some overlap with object inspection; remove this and make
- * DumpHeap return lists of heapptrs instead?
- */
-DUK_LOCAL void duk__debug_dump_heaphdr(duk_hthread *thr, duk_heap *heap,
duk_heaphdr *hdr) {
- DUK_UNREF(heap);
-
- duk_debug_write_heapptr(thr, hdr);
- duk_debug_write_uint(thr, (duk_uint32_t) DUK_HEAPHDR_GET_TYPE(hdr));
- duk_debug_write_uint(thr, (duk_uint32_t)
DUK_HEAPHDR_GET_FLAGS_RAW(hdr));
-#if defined(DUK_USE_REFERENCE_COUNTING)
- duk_debug_write_uint(thr, (duk_uint32_t) DUK_HEAPHDR_GET_REFCOUNT(hdr));
-#else
- duk_debug_write_int(thr, (duk_int32_t) -1);
-#endif
-
- switch (DUK_HEAPHDR_GET_TYPE(hdr)) {
- case DUK_HTYPE_STRING: {
- duk_hstring *h = (duk_hstring *) hdr;
-
- duk_debug_write_uint(thr, (duk_int32_t)
DUK_HSTRING_GET_BYTELEN(h));
- duk_debug_write_uint(thr, (duk_int32_t)
DUK_HSTRING_GET_CHARLEN(h));
- duk_debug_write_uint(thr, (duk_int32_t)
DUK_HSTRING_GET_HASH(h));
- duk_debug_write_hstring(thr, h);
- break;
- }
- case DUK_HTYPE_OBJECT: {
- duk_hobject *h = (duk_hobject *) hdr;
- duk_hstring *k;
- duk_uint_fast32_t i;
-
- duk_debug_write_uint(thr, (duk_uint32_t)
DUK_HOBJECT_GET_CLASS_NUMBER(h));
- duk_debug_write_heapptr(thr, (duk_heaphdr *)
DUK_HOBJECT_GET_PROTOTYPE(heap, h));
- duk_debug_write_uint(thr, (duk_uint32_t)
DUK_HOBJECT_GET_ESIZE(h));
- duk_debug_write_uint(thr, (duk_uint32_t)
DUK_HOBJECT_GET_ENEXT(h));
- duk_debug_write_uint(thr, (duk_uint32_t)
DUK_HOBJECT_GET_ASIZE(h));
- duk_debug_write_uint(thr, (duk_uint32_t)
DUK_HOBJECT_GET_HSIZE(h));
-
- for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(h);
i++) {
- duk_debug_write_uint(thr, (duk_uint32_t)
DUK_HOBJECT_E_GET_FLAGS(heap, h, i));
- k = DUK_HOBJECT_E_GET_KEY(heap, h, i);
- duk_debug_write_heapptr(thr, (duk_heaphdr *) k);
- if (k == NULL) {
- duk_debug_write_int(thr, 0); /* isAccessor */
- duk_debug_write_unused(thr);
- continue;
- }
- if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(heap, h, i)) {
- duk_debug_write_int(thr, 1); /* isAccessor */
- duk_debug_write_heapptr(thr, (duk_heaphdr *)
DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->a.get);
- duk_debug_write_heapptr(thr, (duk_heaphdr *)
DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->a.set);
- } else {
- duk_debug_write_int(thr, 0); /* isAccessor */
-
- duk__debug_write_tval_heapptr(thr,
&DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->v);
- }
- }
-
- for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ASIZE(h);
i++) {
- /* Note: array dump will include elements beyond
- * 'length'.
- */
- duk__debug_write_tval_heapptr(thr,
DUK_HOBJECT_A_GET_VALUE_PTR(heap, h, i));
- }
- break;
- }
- case DUK_HTYPE_BUFFER: {
- duk_hbuffer *h = (duk_hbuffer *) hdr;
-
- duk_debug_write_uint(thr, (duk_uint32_t)
DUK_HBUFFER_GET_SIZE(h));
- duk_debug_write_buffer(thr, (const char *)
DUK_HBUFFER_GET_DATA_PTR(heap, h), (duk_size_t) DUK_HBUFFER_GET_SIZE(h));
- break;
- }
- default: {
- DUK_D(DUK_DPRINT("invalid htype: %d", (int)
DUK_HEAPHDR_GET_TYPE(hdr)));
- }
- }
-}
-
-DUK_LOCAL void duk__debug_dump_heap_allocated(duk_hthread *thr, duk_heap
*heap) {
- duk_heaphdr *hdr;
-
- hdr = heap->heap_allocated;
- while (hdr != NULL) {
- duk__debug_dump_heaphdr(thr, heap, hdr);
- hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr);
- }
-}
-
-#if defined(DUK_USE_STRTAB_CHAIN)
-DUK_LOCAL void duk__debug_dump_strtab_chain(duk_hthread *thr, duk_heap *heap) {
- duk_uint_fast32_t i, j;
- duk_strtab_entry *e;
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t *lst;
-#else
- duk_hstring **lst;
-#endif
- duk_hstring *h;
-
- for (i = 0; i < DUK_STRTAB_CHAIN_SIZE; i++) {
- e = heap->strtable + i;
- if (e->listlen > 0) {
-#if defined(DUK_USE_HEAPPTR16)
- lst = (duk_uint16_t *)
DUK_USE_HEAPPTR_DEC16(heap->heap_udata, e->u.strlist16);
-#else
- lst = e->u.strlist;
-#endif
- DUK_ASSERT(lst != NULL);
-
- for (j = 0; j < e->listlen; j++) {
-#if defined(DUK_USE_HEAPPTR16)
- h = DUK_USE_HEAPPTR_DEC16(heap->heap_udata,
lst[j]);
-#else
- h = lst[j];
-#endif
- if (h != NULL) {
- duk__debug_dump_heaphdr(thr, heap,
(duk_heaphdr *) h);
- }
- }
- } else {
-#if defined(DUK_USE_HEAPPTR16)
- h = DUK_USE_HEAPPTR_DEC16(heap->heap_udata, e->u.str16);
-#else
- h = e->u.str;
-#endif
- if (h != NULL) {
- duk__debug_dump_heaphdr(thr, heap, (duk_heaphdr
*) h);
- }
- }
- }
-}
-#endif /* DUK_USE_STRTAB_CHAIN */
-
-#if defined(DUK_USE_STRTAB_PROBE)
-DUK_LOCAL void duk__debug_dump_strtab_probe(duk_hthread *thr, duk_heap *heap) {
- duk_uint32_t i;
- duk_hstring *h;
-
- for (i = 0; i < heap->st_size; i++) {
-#if defined(DUK_USE_HEAPPTR16)
- h = DUK_USE_HEAPPTR_DEC16(heap->heap_udata,
heap->strtable16[i]);
-#else
- h = heap->strtable[i];
-#endif
- if (h == NULL || h == DUK_STRTAB_DELETED_MARKER(heap)) {
- continue;
- }
-
- duk__debug_dump_heaphdr(thr, heap, (duk_heaphdr *) h);
- }
-}
-#endif /* DUK_USE_STRTAB_PROBE */
-
-DUK_LOCAL void duk__debug_handle_dump_heap(duk_hthread *thr, duk_heap *heap) {
- DUK_D(DUK_DPRINT("debug command DumpHeap"));
-
- duk_debug_write_reply(thr);
- duk__debug_dump_heap_allocated(thr, heap);
-#if defined(DUK_USE_STRTAB_CHAIN)
- duk__debug_dump_strtab_chain(thr, heap);
-#endif
-#if defined(DUK_USE_STRTAB_PROBE)
- duk__debug_dump_strtab_probe(thr, heap);
-#endif
- duk_debug_write_eom(thr);
-}
-#endif /* DUK_USE_DEBUGGER_DUMPHEAP */
-
-DUK_LOCAL void duk__debug_handle_get_bytecode(duk_hthread *thr, duk_heap
*heap) {
- duk_activation *act;
- duk_hcompiledfunction *fun = NULL;
- duk_size_t i, n;
- duk_tval *tv;
- duk_hobject **fn;
- duk_int32_t level = -1;
- duk_uint8_t ibyte;
-
- DUK_UNREF(heap);
-
- DUK_D(DUK_DPRINT("debug command GetBytecode"));
-
- ibyte = duk_debug_peek_byte(thr);
- if (ibyte != DUK_DBG_IB_EOM) {
- tv = duk_debug_read_tval(thr);
- if (tv == NULL) {
- /* detached */
- return;
- }
- if (DUK_TVAL_IS_OBJECT(tv)) {
- /* tentative, checked later */
- fun = (duk_hcompiledfunction *) DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(fun != NULL);
- } else if (DUK_TVAL_IS_NUMBER(tv)) {
- level = (duk_int32_t) DUK_TVAL_GET_NUMBER(tv);
- } else {
- DUK_D(DUK_DPRINT("invalid argument to GetBytecode:
%!T", tv));
- goto fail_args;
- }
- }
-
- if (fun == NULL) {
- if (level >= 0 || -level > (duk_int32_t) thr->callstack_top) {
- DUK_D(DUK_DPRINT("invalid callstack level for
GetBytecode"));
- goto fail_level;
- }
- act = thr->callstack + thr->callstack_top + level;
- fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act);
- }
-
- if (fun == NULL || !DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *)
fun)) {
- DUK_D(DUK_DPRINT("invalid argument to GetBytecode: %!O", fun));
- goto fail_args;
- }
- DUK_ASSERT(fun != NULL && DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject
*) fun));
-
- duk_debug_write_reply(thr);
- n = DUK_HCOMPILEDFUNCTION_GET_CONSTS_COUNT(heap, fun);
- duk_debug_write_int(thr, (duk_int32_t) n);
- tv = DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(heap, fun);
- for (i = 0; i < n; i++) {
- duk_debug_write_tval(thr, tv);
- tv++;
- }
- n = DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(heap, fun);
- duk_debug_write_int(thr, (duk_int32_t) n);
- fn = DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(heap, fun);
- for (i = 0; i < n; i++) {
- duk_debug_write_hobject(thr, *fn);
- fn++;
- }
- duk_debug_write_string(thr,
- (const char *)
DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(heap, fun),
- (duk_size_t)
DUK_HCOMPILEDFUNCTION_GET_CODE_SIZE(heap, fun));
- duk_debug_write_eom(thr);
- return;
-
- fail_args:
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNKNOWN, "invalid argument");
- return;
-
- fail_level:
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND, "invalid callstack
level");
- return;
-}
-
-/*
- * Object inspection commands: GetHeapObjInfo, GetObjPropDesc,
- * GetObjPropDescRange
- */
-
-#if defined(DUK_USE_DEBUGGER_INSPECT)
-
-#if 0 /* pruned */
-DUK_LOCAL const char * const duk__debug_getinfo_heaphdr_keys[] = {
- "reachable",
- "temproot",
- "finalizable",
- "finalized",
- "readonly"
- /* NULL not needed here */
-};
-DUK_LOCAL duk_uint_t duk__debug_getinfo_heaphdr_masks[] = {
- DUK_HEAPHDR_FLAG_REACHABLE,
- DUK_HEAPHDR_FLAG_TEMPROOT,
- DUK_HEAPHDR_FLAG_FINALIZABLE,
- DUK_HEAPHDR_FLAG_FINALIZED,
- DUK_HEAPHDR_FLAG_READONLY,
- 0 /* terminator */
-};
-#endif
-DUK_LOCAL const char * const duk__debug_getinfo_hstring_keys[] = {
-#if 0
- "arridx",
- "internal",
- "reserved_word",
- "strict_reserved_word",
- "eval_or_arguments",
-#endif
- "extdata"
- /* NULL not needed here */
-};
-DUK_LOCAL duk_uint_t duk__debug_getinfo_hstring_masks[] = {
-#if 0
- DUK_HSTRING_FLAG_ARRIDX,
- DUK_HSTRING_FLAG_INTERNAL,
- DUK_HSTRING_FLAG_RESERVED_WORD,
- DUK_HSTRING_FLAG_STRICT_RESERVED_WORD,
- DUK_HSTRING_FLAG_EVAL_OR_ARGUMENTS,
-#endif
- DUK_HSTRING_FLAG_EXTDATA,
- 0 /* terminator */
-};
-DUK_LOCAL const char * const duk__debug_getinfo_hobject_keys[] = {
- "extensible",
- "constructable",
- "bound",
- "compiledfunction",
- "nativefunction",
- "bufferobject",
- "thread",
- "array_part",
- "strict",
- "notail",
- "newenv",
- "namebinding",
- "createargs",
- "envrecclosed",
- "exotic_array",
- "exotic_stringobj",
- "exotic_arguments",
- "exotic_dukfunc",
- "exotic_proxyobj"
- /* NULL not needed here */
-};
-DUK_LOCAL duk_uint_t duk__debug_getinfo_hobject_masks[] = {
- DUK_HOBJECT_FLAG_EXTENSIBLE,
- DUK_HOBJECT_FLAG_CONSTRUCTABLE,
- DUK_HOBJECT_FLAG_BOUND,
- DUK_HOBJECT_FLAG_COMPILEDFUNCTION,
- DUK_HOBJECT_FLAG_NATIVEFUNCTION,
- DUK_HOBJECT_FLAG_BUFFEROBJECT,
- DUK_HOBJECT_FLAG_THREAD,
- DUK_HOBJECT_FLAG_ARRAY_PART,
- DUK_HOBJECT_FLAG_STRICT,
- DUK_HOBJECT_FLAG_NOTAIL,
- DUK_HOBJECT_FLAG_NEWENV,
- DUK_HOBJECT_FLAG_NAMEBINDING,
- DUK_HOBJECT_FLAG_CREATEARGS,
- DUK_HOBJECT_FLAG_ENVRECCLOSED,
- DUK_HOBJECT_FLAG_EXOTIC_ARRAY,
- DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ,
- DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS,
- DUK_HOBJECT_FLAG_EXOTIC_DUKFUNC,
- DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ,
- 0 /* terminator */
-};
-DUK_LOCAL const char * const duk__debug_getinfo_hbuffer_keys[] = {
- "dynamic",
- "external"
- /* NULL not needed here */
-};
-DUK_LOCAL duk_uint_t duk__debug_getinfo_hbuffer_masks[] = {
- DUK_HBUFFER_FLAG_DYNAMIC,
- DUK_HBUFFER_FLAG_EXTERNAL,
- 0 /* terminator */
-};
-
-DUK_LOCAL void duk__debug_getinfo_flags_key(duk_hthread *thr, const char *key)
{
- duk_debug_write_uint(thr, 0);
- duk_debug_write_cstring(thr, key);
-}
-
-DUK_LOCAL void duk__debug_getinfo_prop_uint(duk_hthread *thr, const char *key,
duk_uint_t val) {
- duk_debug_write_uint(thr, 0);
- duk_debug_write_cstring(thr, key);
- duk_debug_write_uint(thr, val);
-}
-
-DUK_LOCAL void duk__debug_getinfo_prop_int(duk_hthread *thr, const char *key,
duk_int_t val) {
- duk_debug_write_uint(thr, 0);
- duk_debug_write_cstring(thr, key);
- duk_debug_write_int(thr, val);
-}
-
-DUK_LOCAL void duk__debug_getinfo_prop_bool(duk_hthread *thr, const char *key,
duk_bool_t val) {
- duk_debug_write_uint(thr, 0);
- duk_debug_write_cstring(thr, key);
- duk_debug_write_boolean(thr, val);
-}
-
-DUK_LOCAL void duk__debug_getinfo_bitmask(duk_hthread *thr, const char * const
* keys, duk_uint_t *masks, duk_uint_t flags) {
- const char *key;
- duk_uint_t mask;
-
- for (;;) {
- mask = *masks++;
- if (!mask) {
- break;
- }
- key = *keys++;
- DUK_ASSERT(key != NULL);
-
- DUK_DD(DUK_DDPRINT("inspect bitmask: key=%s, mask=0x%08lx,
flags=0x%08lx", key, (unsigned long) mask, (unsigned long) flags));
- duk__debug_getinfo_prop_bool(thr, key, flags & mask);
- }
-}
-
-/* Inspect a property using a virtual index into a conceptual property list
- * consisting of (1) all array part items from [0,a_size[ (even when above
- * .length) and (2) all entry part items from [0,e_next[. Unused slots are
- * indicated using dvalue 'unused'.
- */
-DUK_LOCAL duk_bool_t duk__debug_getprop_index(duk_hthread *thr, duk_heap
*heap, duk_hobject *h_obj, duk_uint_t idx) {
- duk_uint_t a_size;
- duk_tval *tv;
- duk_hstring *h_key;
- duk_hobject *h_getset;
- duk_uint_t flags;
-
- DUK_UNREF(heap);
-
- a_size = DUK_HOBJECT_GET_ASIZE(h_obj);
- if (idx < a_size) {
- duk_debug_write_uint(thr, DUK_PROPDESC_FLAGS_WEC);
- duk_debug_write_uint(thr, idx);
- tv = DUK_HOBJECT_A_GET_VALUE_PTR(heap, h_obj, idx);
- duk_debug_write_tval(thr, tv);
- return 1;
- }
-
- idx -= a_size;
- if (idx >= DUK_HOBJECT_GET_ENEXT(h_obj)) {
- return 0;
- }
-
- h_key = DUK_HOBJECT_E_GET_KEY(heap, h_obj, idx);
- if (h_key == NULL) {
- duk_debug_write_uint(thr, 0);
- duk_debug_write_null(thr);
- duk_debug_write_unused(thr);
- return 1;
- }
-
- flags = DUK_HOBJECT_E_GET_FLAGS(heap, h_obj, idx);
- if (DUK_HSTRING_HAS_INTERNAL(h_key)) {
- flags |= DUK_DBG_PROPFLAG_INTERNAL;
- }
- duk_debug_write_uint(thr, flags);
- duk_debug_write_hstring(thr, h_key);
- if (flags & DUK_PROPDESC_FLAG_ACCESSOR) {
- h_getset = DUK_HOBJECT_E_GET_VALUE_GETTER(heap, h_obj, idx);
- if (h_getset) {
- duk_debug_write_hobject(thr, h_getset);
- } else {
- duk_debug_write_null(thr);
- }
- h_getset = DUK_HOBJECT_E_GET_VALUE_SETTER(heap, h_obj, idx);
- if (h_getset) {
- duk_debug_write_hobject(thr, h_getset);
- } else {
- duk_debug_write_null(thr);
- }
- } else {
- tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(heap, h_obj, idx);
- duk_debug_write_tval(thr, tv);
- }
- return 1;
-}
-
-DUK_LOCAL void duk__debug_handle_get_heap_obj_info(duk_hthread *thr, duk_heap
*heap) {
- duk_heaphdr *h;
-
- DUK_D(DUK_DPRINT("debug command GetHeapObjInfo"));
- DUK_UNREF(heap);
-
- h = duk_debug_read_any_ptr(thr);
- if (!h) {
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNKNOWN, "invalid
target");
- return;
- }
-
- duk_debug_write_reply(thr);
-
- /* As with all inspection code, we rely on the debug client providing
- * a valid, non-stale pointer: there's no portable way to safely
- * validate the pointer here.
- */
-
- duk__debug_getinfo_flags_key(thr, "heapptr");
- duk_debug_write_heapptr(thr, h);
-
- /* XXX: comes out as signed now */
- duk__debug_getinfo_prop_uint(thr, "heaphdr_flags", (duk_uint_t)
DUK_HEAPHDR_GET_FLAGS(h));
- duk__debug_getinfo_prop_uint(thr, "heaphdr_type", (duk_uint_t)
DUK_HEAPHDR_GET_TYPE(h));
-#if defined(DUK_USE_REFERENCE_COUNTING)
- duk__debug_getinfo_prop_uint(thr, "refcount", (duk_uint_t)
DUK_HEAPHDR_GET_REFCOUNT(h));
-#endif
-#if 0 /* pruned */
- duk__debug_getinfo_bitmask(thr,
- duk__debug_getinfo_heaphdr_keys,
- duk__debug_getinfo_heaphdr_masks,
- DUK_HEAPHDR_GET_FLAGS_RAW(h));
-#endif
-
- switch (DUK_HEAPHDR_GET_TYPE(h)) {
- case DUK_HTYPE_STRING: {
- duk_hstring *h_str;
-
- h_str = (duk_hstring *) h;
- duk__debug_getinfo_bitmask(thr,
- duk__debug_getinfo_hstring_keys,
- duk__debug_getinfo_hstring_masks,
- DUK_HEAPHDR_GET_FLAGS_RAW(h));
- duk__debug_getinfo_prop_uint(thr, "bytelen",
DUK_HSTRING_GET_BYTELEN(h_str));
- duk__debug_getinfo_prop_uint(thr, "charlen",
DUK_HSTRING_GET_CHARLEN(h_str));
- duk__debug_getinfo_prop_uint(thr, "hash",
DUK_HSTRING_GET_HASH(h_str));
- duk__debug_getinfo_flags_key(thr, "data");
- duk_debug_write_hstring(thr, h_str);
- break;
- }
- case DUK_HTYPE_OBJECT: {
- duk_hobject *h_obj;
- duk_hobject *h_proto;
-
- h_obj = (duk_hobject *) h;
- h_proto = DUK_HOBJECT_GET_PROTOTYPE(heap, h_obj);
-
- /* duk_hobject specific fields. */
- duk__debug_getinfo_bitmask(thr,
- duk__debug_getinfo_hobject_keys,
- duk__debug_getinfo_hobject_masks,
- DUK_HEAPHDR_GET_FLAGS_RAW(h));
- duk__debug_getinfo_prop_uint(thr, "class_number",
DUK_HOBJECT_GET_CLASS_NUMBER(h_obj));
- duk__debug_getinfo_flags_key(thr, "class_name");
- duk_debug_write_hstring(thr, DUK_HOBJECT_GET_CLASS_STRING(heap,
h_obj));
- duk__debug_getinfo_flags_key(thr, "prototype");
- if (h_proto != NULL) {
- duk_debug_write_hobject(thr, h_proto);
- } else {
- duk_debug_write_null(thr);
- }
- duk__debug_getinfo_flags_key(thr, "props");
- duk_debug_write_pointer(thr, (void *)
DUK_HOBJECT_GET_PROPS(heap, h_obj));
- duk__debug_getinfo_prop_uint(thr, "e_size", (duk_uint_t)
DUK_HOBJECT_GET_ESIZE(h_obj));
- duk__debug_getinfo_prop_uint(thr, "e_next", (duk_uint_t)
DUK_HOBJECT_GET_ENEXT(h_obj));
- duk__debug_getinfo_prop_uint(thr, "a_size", (duk_uint_t)
DUK_HOBJECT_GET_ASIZE(h_obj));
- duk__debug_getinfo_prop_uint(thr, "h_size", (duk_uint_t)
DUK_HOBJECT_GET_HSIZE(h_obj));
-
- /* duk_hnativefunction specific fields. */
- if (DUK_HOBJECT_IS_NATIVEFUNCTION(h_obj)) {
- duk_hnativefunction *h_fun;
- h_fun = (duk_hnativefunction *) h_obj;
-
- duk__debug_getinfo_prop_int(thr, "nargs", h_fun->nargs);
- duk__debug_getinfo_prop_int(thr, "magic", h_fun->magic);
- duk__debug_getinfo_prop_bool(thr, "varargs",
h_fun->magic == DUK_HNATIVEFUNCTION_NARGS_VARARGS);
- /* Native function pointer may be different from a void
pointer,
- * and we serialize it from memory directly now (no
byte swapping etc).
- */
- duk__debug_getinfo_flags_key(thr, "funcptr");
- duk_debug_write_buffer(thr, (const char *)
&h_fun->func, sizeof(h_fun->func));
- }
-
- if (DUK_HOBJECT_IS_COMPILEDFUNCTION(h_obj)) {
- duk_hcompiledfunction *h_fun;
- duk_hbuffer *h_buf;
- h_fun = (duk_hcompiledfunction *) h_obj;
-
- duk__debug_getinfo_prop_int(thr, "nregs", h_fun->nregs);
- duk__debug_getinfo_prop_int(thr, "nargs", h_fun->nargs);
- duk__debug_getinfo_prop_uint(thr, "start_line",
h_fun->start_line);
- duk__debug_getinfo_prop_uint(thr, "end_line",
h_fun->end_line);
- h_buf = (duk_hbuffer *)
DUK_HCOMPILEDFUNCTION_GET_DATA(thr->heap, h_fun);
- if (h_buf != NULL) {
- duk__debug_getinfo_flags_key(thr, "data");
- duk_debug_write_heapptr(thr, (duk_heaphdr *)
h_buf);
- }
- }
-
- if (DUK_HOBJECT_IS_THREAD(h_obj)) {
- /* XXX: Currently no inspection of threads, e.g. value
stack, call
- * stack, catch stack, etc.
- */
- duk_hthread *h_thr;
- h_thr = (duk_hthread *) h_obj;
- DUK_UNREF(h_thr);
- }
-
- if (DUK_HOBJECT_IS_BUFFEROBJECT(h_obj)) {
- duk_hbufferobject *h_bufobj;
- h_bufobj = (duk_hbufferobject *) h_obj;
-
- duk__debug_getinfo_prop_uint(thr, "slice_offset",
h_bufobj->offset);
- duk__debug_getinfo_prop_uint(thr, "slice_length",
h_bufobj->length);
- duk__debug_getinfo_prop_uint(thr, "elem_shift",
(duk_uint_t) h_bufobj->shift);
- duk__debug_getinfo_prop_uint(thr, "elem_type",
(duk_uint_t) h_bufobj->elem_type);
- duk__debug_getinfo_prop_bool(thr, "is_view",
(duk_uint_t) h_bufobj->is_view);
- if (h_bufobj->buf != NULL) {
- duk__debug_getinfo_flags_key(thr, "buffer");
- duk_debug_write_heapptr(thr, (duk_heaphdr *)
h_bufobj->buf);
- }
- }
- break;
- }
- case DUK_HTYPE_BUFFER: {
- duk_hbuffer *h_buf;
-
- h_buf = (duk_hbuffer *) h;
- duk__debug_getinfo_bitmask(thr,
- duk__debug_getinfo_hbuffer_keys,
- duk__debug_getinfo_hbuffer_masks,
- DUK_HEAPHDR_GET_FLAGS_RAW(h));
- duk__debug_getinfo_prop_uint(thr, "size", (duk_uint_t)
DUK_HBUFFER_GET_SIZE(h_buf));
- duk__debug_getinfo_flags_key(thr, "dataptr");
- duk_debug_write_pointer(thr, (void *)
DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_buf));
- duk__debug_getinfo_flags_key(thr, "data");
- duk_debug_write_hbuffer(thr, h_buf); /* tolerates NULL h_buf */
- break;
- }
- default: {
- /* Since we already started writing the reply, just emit
nothing. */
- DUK_D(DUK_DPRINT("inspect target pointer has invalid heaphdr
type"));
- }
- }
-
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_get_obj_prop_desc(duk_hthread *thr, duk_heap
*heap) {
- duk_heaphdr *h;
- duk_hobject *h_obj;
- duk_hstring *h_key;
- duk_propdesc desc;
-
- DUK_D(DUK_DPRINT("debug command GetObjPropDesc"));
- DUK_UNREF(heap);
-
- h = duk_debug_read_any_ptr(thr);
- if (!h) {
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNKNOWN, "invalid
target");
- return;
- }
- h_key = duk_debug_read_hstring(thr);
- if (h == NULL || DUK_HEAPHDR_GET_TYPE(h) != DUK_HTYPE_OBJECT || h_key
== NULL) {
- goto fail_args;
- }
- h_obj = (duk_hobject *) h;
-
- if (duk_hobject_get_own_propdesc(thr, h_obj, h_key, &desc, 0
/*flags*/)) {
- duk_int_t virtual_idx;
- duk_bool_t rc;
-
- /* To use the shared helper need the virtual index. */
- DUK_ASSERT(desc.e_idx >= 0 || desc.a_idx >= 0);
- virtual_idx = (desc.a_idx >= 0 ? desc.a_idx :
- (duk_int_t) DUK_HOBJECT_GET_ASIZE(h_obj) +
desc.e_idx);
-
- duk_debug_write_reply(thr);
- rc = duk__debug_getprop_index(thr, heap, h_obj, (duk_uint_t)
virtual_idx);
- DUK_ASSERT(rc == 1);
- DUK_UNREF(rc);
- duk_debug_write_eom(thr);
- } else {
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND, "not
found");
- }
- return;
-
- fail_args:
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNKNOWN, "invalid args");
-}
-
-DUK_LOCAL void duk__debug_handle_get_obj_prop_desc_range(duk_hthread *thr,
duk_heap *heap) {
- duk_heaphdr *h;
- duk_hobject *h_obj;
- duk_uint_t idx, idx_start, idx_end;
-
- DUK_D(DUK_DPRINT("debug command GetObjPropDescRange"));
- DUK_UNREF(heap);
-
- h = duk_debug_read_any_ptr(thr);
- idx_start = duk_debug_read_int(thr);
- idx_end = duk_debug_read_int(thr);
- if (h == NULL || DUK_HEAPHDR_GET_TYPE(h) != DUK_HTYPE_OBJECT) {
- goto fail_args;
- }
- h_obj = (duk_hobject *) h;
-
- /* The index range space is conceptually the array part followed by the
- * entry part. Unlike normal enumeration all slots are exposed here as
- * is and return 'unused' if the slots are not in active use. In
particular
- * the array part is included for the full a_size regardless of what the
- * array .length is.
- */
-
- duk_debug_write_reply(thr);
- for (idx = idx_start; idx < idx_end; idx++) {
- if (!duk__debug_getprop_index(thr, heap, h_obj, idx)) {
- break;
- }
- }
- duk_debug_write_eom(thr);
- return;
-
- fail_args:
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNKNOWN, "invalid args");
-}
-
-#endif /* DUK_USE_DEBUGGER_INSPECT */
-
-/*
- * Process incoming debug requests
- *
- * Individual request handlers can push temporaries on the value stack and
- * rely on duk__debug_process_message() to restore the value stack top
- * automatically.
- */
-
-/* Process one debug message. Automatically restore value stack top to its
- * entry value, so that individual message handlers don't need exact value
- * stack handling which is convenient.
- */
-DUK_LOCAL void duk__debug_process_message(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_heap *heap;
- duk_uint8_t x;
- duk_int32_t cmd;
- duk_idx_t entry_top;
-
- DUK_ASSERT(thr != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
- DUK_UNREF(ctx);
-
- entry_top = duk_get_top(ctx);
-
- x = duk_debug_read_byte(thr);
- switch (x) {
- case DUK_DBG_IB_REQUEST: {
- cmd = duk_debug_read_int(thr);
- switch (cmd) {
- case DUK_DBG_CMD_BASICINFO: {
- duk__debug_handle_basic_info(thr, heap);
- break;
- }
- case DUK_DBG_CMD_TRIGGERSTATUS: {
- duk__debug_handle_trigger_status(thr, heap);
- break;
- }
- case DUK_DBG_CMD_PAUSE: {
- duk__debug_handle_pause(thr, heap);
- break;
- }
- case DUK_DBG_CMD_RESUME: {
- duk__debug_handle_resume(thr, heap);
- break;
- }
- case DUK_DBG_CMD_STEPINTO:
- case DUK_DBG_CMD_STEPOVER:
- case DUK_DBG_CMD_STEPOUT: {
- duk__debug_handle_step(thr, heap, cmd);
- break;
- }
- case DUK_DBG_CMD_LISTBREAK: {
- duk__debug_handle_list_break(thr, heap);
- break;
- }
- case DUK_DBG_CMD_ADDBREAK: {
- duk__debug_handle_add_break(thr, heap);
- break;
- }
- case DUK_DBG_CMD_DELBREAK: {
- duk__debug_handle_del_break(thr, heap);
- break;
- }
- case DUK_DBG_CMD_GETVAR: {
- duk__debug_handle_get_var(thr, heap);
- break;
- }
- case DUK_DBG_CMD_PUTVAR: {
- duk__debug_handle_put_var(thr, heap);
- break;
- }
- case DUK_DBG_CMD_GETCALLSTACK: {
- duk__debug_handle_get_call_stack(thr, heap);
- break;
- }
- case DUK_DBG_CMD_GETLOCALS: {
- duk__debug_handle_get_locals(thr, heap);
- break;
- }
- case DUK_DBG_CMD_EVAL: {
- duk__debug_handle_eval(thr, heap);
- break;
- }
- case DUK_DBG_CMD_DETACH: {
- /* The actual detached_cb call is postponed to message
loop so
- * we don't need any special precautions here (just
skip to EOM
- * on the already closed connection).
- */
- duk__debug_handle_detach(thr, heap);
- break;
- }
-#if defined(DUK_USE_DEBUGGER_DUMPHEAP)
- case DUK_DBG_CMD_DUMPHEAP: {
- duk__debug_handle_dump_heap(thr, heap);
- break;
- }
-#endif /* DUK_USE_DEBUGGER_DUMPHEAP */
- case DUK_DBG_CMD_GETBYTECODE: {
- duk__debug_handle_get_bytecode(thr, heap);
- break;
- }
- case DUK_DBG_CMD_APPREQUEST: {
- duk__debug_handle_apprequest(thr, heap);
- break;
- }
-#if defined(DUK_USE_DEBUGGER_INSPECT)
- case DUK_DBG_CMD_GETHEAPOBJINFO: {
- duk__debug_handle_get_heap_obj_info(thr, heap);
- break;
- }
- case DUK_DBG_CMD_GETOBJPROPDESC: {
- duk__debug_handle_get_obj_prop_desc(thr, heap);
- break;
- }
- case DUK_DBG_CMD_GETOBJPROPDESCRANGE: {
- duk__debug_handle_get_obj_prop_desc_range(thr, heap);
- break;
- }
-#endif /* DUK_USE_DEBUGGER_INSPECT */
- default: {
- DUK_D(DUK_DPRINT("debug command unsupported: %d", (int)
cmd));
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNSUPPORTED,
"unsupported command");
- }
- } /* switch cmd */
- break;
- }
- case DUK_DBG_IB_REPLY: {
- DUK_D(DUK_DPRINT("debug reply, skipping"));
- break;
- }
- case DUK_DBG_IB_ERROR: {
- DUK_D(DUK_DPRINT("debug error, skipping"));
- break;
- }
- case DUK_DBG_IB_NOTIFY: {
- DUK_D(DUK_DPRINT("debug notify, skipping"));
- break;
- }
- default: {
- DUK_D(DUK_DPRINT("invalid initial byte, drop connection: %d",
(int) x));
- goto fail;
- }
- } /* switch initial byte */
-
- DUK_ASSERT(duk_get_top(ctx) >= entry_top);
- duk_set_top(ctx, entry_top);
- duk__debug_skip_to_eom(thr);
- return;
-
- fail:
- DUK_ASSERT(duk_get_top(ctx) >= entry_top);
- duk_set_top(ctx, entry_top);
- DUK__SET_CONN_BROKEN(thr, 1);
- return;
-}
-
-DUK_LOCAL void duk__check_resend_status(duk_hthread *thr) {
- if (thr->heap->dbg_read_cb != NULL && thr->heap->dbg_state_dirty) {
- duk_debug_send_status(thr);
- thr->heap->dbg_state_dirty = 0;
- }
-}
-
-DUK_INTERNAL duk_bool_t duk_debug_process_messages(duk_hthread *thr,
duk_bool_t no_block) {
- duk_context *ctx = (duk_context *) thr;
-#if defined(DUK_USE_ASSERTIONS)
- duk_idx_t entry_top;
-#endif
- duk_bool_t retval = 0;
-
- DUK_ASSERT(thr != NULL);
- DUK_UNREF(ctx);
- DUK_ASSERT(thr->heap != NULL);
-#if defined(DUK_USE_ASSERTIONS)
- entry_top = duk_get_top(ctx);
-#endif
-
- DUK_D(DUK_DPRINT("process debug messages: read_cb=%s, no_block=%ld,
detaching=%ld, processing=%ld",
- thr->heap->dbg_read_cb ? "not NULL" : "NULL", (long)
no_block,
- (long) thr->heap->dbg_detaching, (long)
thr->heap->dbg_processing));
- DUK_DD(DUK_DDPRINT("top at entry: %ld", (long) duk_get_top(ctx)));
-
- /* thr->heap->dbg_detaching may be != 0 if a debugger write outside
- * the message loop caused a transport error and detach1() to run.
- */
- DUK_ASSERT(thr->heap->dbg_detaching == 0 || thr->heap->dbg_detaching ==
1);
- DUK_ASSERT(thr->heap->dbg_processing == 0);
- thr->heap->dbg_processing = 1;
-
- /* Ensure dirty state causes a Status even if never process any
- * messages. This is expected by the bytecode executor when in
- * the running state.
- */
- duk__check_resend_status(thr);
-
- for (;;) {
- /* Process messages until we're no longer paused or we peek
- * and see there's nothing to read right now.
- */
- DUK_DD(DUK_DDPRINT("top at loop top: %ld", (long)
duk_get_top(ctx)));
- DUK_ASSERT(thr->heap->dbg_processing == 1);
-
- while (thr->heap->dbg_read_cb == NULL &&
thr->heap->dbg_detaching) {
- /* Detach is pending; can be triggered from outside the
- * debugger loop (e.g. Status notify write error) or by
- * previous message handling. Call detached callback
- * here, in a controlled state, to ensure a possible
- * reattach inside the detached_cb is handled correctly.
- *
- * Recheck for detach in a while loop: an immediate
- * reattach involves a call to duk_debugger_attach()
- * which writes a debugger handshake line immediately
- * inside the API call. If the transport write fails
- * for that handshake, we can immediately end up in a
- * "transport broken, detaching" case several times
here.
- * Loop back until we're either cleanly attached or
- * fully detached.
- *
- * NOTE: Reset dbg_processing = 1 forcibly, in case we
- * re-attached; duk_debugger_attach() sets
dbg_processing
- * to 0 at the moment.
- */
-
- DUK_D(DUK_DPRINT("detach pending (dbg_read_cb == NULL,
dbg_detaching != 0), call detach2"));
-
- duk__debug_do_detach2(thr->heap);
- thr->heap->dbg_processing = 1; /* may be set to 0 by
duk_debugger_attach() inside callback */
-
- DUK_D(DUK_DPRINT("after detach2 (and possible
reattach): dbg_read_cb=%s, dbg_detaching=%ld",
- thr->heap->dbg_read_cb ? "not NULL" :
"NULL", (long) thr->heap->dbg_detaching));
- }
- DUK_ASSERT(thr->heap->dbg_detaching == 0); /* true even with
reattach */
- DUK_ASSERT(thr->heap->dbg_processing == 1); /* even after a
detach and possible reattach */
-
- if (thr->heap->dbg_read_cb == NULL) {
- DUK_D(DUK_DPRINT("debug connection broken (and not
detaching), stop processing messages"));
- break;
- }
-
- if (!thr->heap->dbg_paused || no_block) {
- if (!duk_debug_read_peek(thr)) {
- /* Note: peek cannot currently trigger a detach
- * so the dbg_detaching == 0 assert outside the
- * loop is correct.
- */
- DUK_D(DUK_DPRINT("processing debug message,
peek indicated no data, stop processing messages"));
- break;
- }
- DUK_D(DUK_DPRINT("processing debug message, peek
indicated there is data, handle it"));
- } else {
- DUK_D(DUK_DPRINT("paused, process debug message,
blocking if necessary"));
- }
-
- duk__check_resend_status(thr);
- duk__debug_process_message(thr);
- duk__check_resend_status(thr);
-
- retval = 1; /* processed one or more messages */
- }
-
- DUK_ASSERT(thr->heap->dbg_detaching == 0);
- DUK_ASSERT(thr->heap->dbg_processing == 1);
- thr->heap->dbg_processing = 0;
-
- /* As an initial implementation, read flush after exiting the message
- * loop. If transport is broken, this is a no-op (with debug logs).
- */
- duk_debug_read_flush(thr); /* this cannot initiate a detach */
- DUK_ASSERT(thr->heap->dbg_detaching == 0);
-
- DUK_DD(DUK_DDPRINT("top at exit: %ld", (long) duk_get_top(ctx)));
-
-#if defined(DUK_USE_ASSERTIONS)
- /* Easy to get wrong, so assert for it. */
- DUK_ASSERT(entry_top == duk_get_top(ctx));
-#endif
-
- return retval;
-}
-
-/*
- * Halt execution helper
- */
-
-/* Halt execution and enter a debugger message loop until execution is resumed
- * by the client. PC for the current activation may be temporarily decremented
- * so that the "current" instruction will be shown by the client. This helper
- * is callable from anywhere, also outside bytecode executor.
- */
-
-DUK_INTERNAL void duk_debug_halt_execution(duk_hthread *thr, duk_bool_t
use_prev_pc) {
- duk_activation *act;
- duk_hcompiledfunction *fun;
- duk_instr_t *old_pc = NULL;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap));
- DUK_ASSERT(thr->heap->dbg_processing == 0);
-
- DUK_HEAP_SET_PAUSED(thr->heap);
-
- act = duk_hthread_get_current_activation(thr);
-
- /* NOTE: act may be NULL if an error is thrown outside of any
activation,
- * which may happen in the case of, e.g. syntax errors.
- */
-
- /* Decrement PC if that was requested, this requires a PC sync. */
- if (act != NULL) {
- duk_hthread_sync_currpc(thr);
- old_pc = act->curr_pc;
- fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act);
-
- /* Short circuit if is safe: if act->curr_pc != NULL, 'fun' is
- * guaranteed to be a non-NULL Ecmascript function.
- */
- DUK_ASSERT(act->curr_pc == NULL ||
- (fun != NULL &&
DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) fun)));
- if (use_prev_pc &&
- act->curr_pc != NULL &&
- act->curr_pc >
DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, fun)) {
- act->curr_pc--;
- }
- }
-
- /* Process debug messages until we are no longer paused. */
-
- /* NOTE: This is a bit fragile. It's important to ensure that
- * duk_debug_process_messages() never throws an error or
- * act->curr_pc will never be reset.
- */
-
- thr->heap->dbg_state_dirty = 1;
- while (thr->heap->dbg_paused) {
- DUK_ASSERT(DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap));
- DUK_ASSERT(thr->heap->dbg_processing);
- duk_debug_process_messages(thr, 0 /*no_block*/);
- }
-
- /* XXX: Decrementing and restoring act->curr_pc works now, but if the
- * debugger message loop gains the ability to adjust the current PC
- * (e.g. a forced jump) restoring the PC here will break. Another
- * approach would be to use a state flag for the "decrement 1 from
- * topmost activation's PC" and take it into account whenever dealing
- * with PC values.
- */
- if (act != NULL) {
- act->curr_pc = old_pc; /* restore PC */
- }
-}
-
-/*
- * Breakpoint management
- */
-
-DUK_INTERNAL duk_small_int_t duk_debug_add_breakpoint(duk_hthread *thr,
duk_hstring *filename, duk_uint32_t line) {
- duk_heap *heap;
- duk_breakpoint *b;
-
- /* Caller must trigger recomputation of active breakpoint list. To
- * ensure stale values are not used if that doesn't happen, clear the
- * active breakpoint list here.
- */
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(filename != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
-
- if (heap->dbg_breakpoint_count >= DUK_HEAP_MAX_BREAKPOINTS) {
- DUK_D(DUK_DPRINT("failed to add breakpoint for %O:%ld, all
breakpoint slots used",
- (duk_heaphdr *) filename, (long) line));
- return -1;
- }
- heap->dbg_breakpoints_active[0] = (duk_breakpoint *) NULL;
- b = heap->dbg_breakpoints + (heap->dbg_breakpoint_count++);
- b->filename = filename;
- b->line = line;
- DUK_HSTRING_INCREF(thr, filename);
-
- return heap->dbg_breakpoint_count - 1; /* index */
-}
-
-DUK_INTERNAL duk_bool_t duk_debug_remove_breakpoint(duk_hthread *thr,
duk_small_uint_t breakpoint_index) {
- duk_heap *heap;
- duk_hstring *h;
- duk_breakpoint *b;
- duk_size_t move_size;
-
- /* Caller must trigger recomputation of active breakpoint list. To
- * ensure stale values are not used if that doesn't happen, clear the
- * active breakpoint list here.
- */
-
- DUK_ASSERT(thr != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT(DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap));
- DUK_ASSERT_DISABLE(breakpoint_index >= 0); /* unsigned */
-
- if (breakpoint_index >= heap->dbg_breakpoint_count) {
- DUK_D(DUK_DPRINT("invalid breakpoint index: %ld", (long)
breakpoint_index));
- return 0;
- }
- b = heap->dbg_breakpoints + breakpoint_index;
-
- h = b->filename;
- DUK_ASSERT(h != NULL);
-
- move_size = sizeof(duk_breakpoint) * (heap->dbg_breakpoint_count -
breakpoint_index - 1);
- if (move_size > 0) {
- DUK_MEMMOVE((void *) b,
- (const void *) (b + 1),
- (size_t) move_size);
- }
- heap->dbg_breakpoint_count--;
- heap->dbg_breakpoints_active[0] = (duk_breakpoint *) NULL;
-
- DUK_HSTRING_DECREF(thr, h); /* side effects */
- DUK_UNREF(h); /* w/o refcounting */
-
- /* Breakpoint entries above the used area are left as garbage. */
-
- return 1;
-}
-
-#undef DUK__SET_CONN_BROKEN
-
-#else /* DUK_USE_DEBUGGER_SUPPORT */
-
-/* No debugger support. */
-
-#endif /* DUK_USE_DEBUGGER_SUPPORT */
