erikcorry

 1958cc0:       43 0f be 5c 0c 01       movsbl 0x1(%r12,%r9,1),%ebx       // ebx = load small int
 1958cc6:       49 8d 51 02             lea    0x2(%r9),%rdx              // rdx = next bytecode addr
 1958cca:       43 0f b6 74 0c 02       movzbl 0x2(%r12,%r9,1),%esi       // esi = peek at next bytecode
 1958cd0:       8d 04 1b                lea    (%rbx,%rbx,1),%eax         // eax = rbx * 2 (tag smi)
 1958cd3:       40 80 fe c1             cmp    $0xc1,%sil                 // is next bc star?  (Store accumulator in 'register'.
 1958cd7:       73 09                   jae    1958ce2 <Builtins_LdaSmiHandler+0x22>  // jmp if star
 1958cd9:       49 8b 0c f7             mov    (%r15,%rsi,8),%rcx         // add bytecode to r15, load next bytecode handler.
 1958cdd:       4c 8b ca                mov    %rdx,%r9                   // Update bytecode program counter
 1958ce0:       ff e1                   jmp    *%rcx                      // Dispatch to next handler
 1958ce2:       48 8b dd                mov    %rbp

erikcorry

#include <immintrin.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <sys/mman.h>

// Compile with clang++ -g -mavx512bw -mavx512f -o mask-test mask-test.cc

int main() {
  char* addr = (char*)mmap(0, 8192, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0);

erikcorry

python3 ../../tools/run.py ./mksnapshot --turbo_instruction_scheduling --stress-turbo-late-spilling --target_os=linux --target_arch=x64 --embedded_src gen/embedded.S --predictable --no-use-ic --embedded_variant Default --random-seed 314159265 --startup_src gen/snapshot.cc --native-code-counters --concurrent-builtin-generation --concurrent-turbofan-max-threads=0 --verify-heap
=================================================================
==1412959==ERROR: AddressSanitizer: heap-use-after-free on address 0x75a4a36202c0 at pc 0x5c2e6e9dca2f bp 0x7ffece69cad0 sp 0x7ffece69cac8
READ of size 8 at 0x75a4a36202c0 thread T0
    #0 0x5c2e6e9dca2e in v8::internal::VirtualMemory::Free() src/utils/allocation.cc:286:52
    #1 0x5c2e6cec2c69 in v8::internal::CodeRange::Free() src/heap/code-range.cc:361:24
    #2 0x5c2e6cec2c69 in v8::internal::CodeRange::~CodeRange() src/heap/code-range.cc:93:27
    #3 0x5c2e6d66c7c6 in std::__Cr::default_delete<v8::internal::CodeRange>::operator()(v8::internal::CodeRange*) const third_p

erikcorry

clang_version = "20"
use_rtti = true
use_sysroot = false
v8_enable_pointer_compression_shared_cage = false
v8_enable_external_code_space = false
cppgc_enable_caged_heap = false
icu_use_data_file = false
# These are defines only relevant to Chromium not V8, no need to have them here.
use_aura = false
use_blink = false

erikcorry

$ (cd out.gn/x64.optdebug; gdb --args cctest test-api/TwoIsolateGroups --random-seed=-515469024 --nohard-abort --verify-heap --enable-slow-asserts --testing-d8-test-runner)
GNU gdb (GDB) 15.1
Copyright (C) 2024 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:

erikcorry

const terms = `\u0446\u0435\u043b\u044c\u044e|\u0446\u0435\u043b\u044c \u0438\u0441\u0441\u043b\u0435|\u0440\u0435\u0437\u044e\u043c\u0435|\u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442|\u043f\u0440\u0435\u0434\u043c\u0435\u0442|\u043c\u0435\u0442\u043e\u0434\u0438\u043a\u0430|\u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u044b|\u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b \u0438 \u043c\u0435\u0442\u043e\u0434\u0438\u043a\u0430|\u0437\u0430\u043a\u043b\u044e\u0447\u0435\u043d\u0438|\u0432\u044b\u0432\u043e\u0434|\u0432\u0432\u0435\u0434\u0435\u043d\u0438|\u0426\u0435\u043b\u044c|\u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b|\u041c\u0435\u0442\u043e\u0434\u044b|\u041a\u0440\u0430\u0442\u043a\u0438\u0435 \u0438\u0442\u043e\u0433\u0438|\u0417\u0430\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435|\u0412\u044b\u0432\u043e\u0434\u044b|\u0412\u0438\u0441\u043d\u043e\u0432\u043a\u0438|\u0412\u0432\u0435\u0434\u0435\u043d\u0438\u0435|\u0410\u043d\u043d\u043e\u0442\u0430\u0446\u0438\u044f|\

erikcorry

Memory use, performance, and Toit pixel display.

(March 2024).

Some applications using pixel displays may run out of memory, especially if you are running on a small ESP32 with no external PSRAM. This is especially the case if you are using the small jaguar server on the device for fast edit-compile-run development cycles.

erikcorry

/// Simple pretty-printer for JSON-compatible objects (maps, lists, strings,
///   numbers, booleans, and null).
pretty-print data --indent/string="" --prefix/string?=null --suffix/string?="" -> none:
  str := json.stringify data
  if str.size < 80:
    print "$(prefix or indent)$str$suffix"
    return
  if data is Map:
    print "$(prefix or indent){"
    i := 0

erikcorry

#
# Automatically generated file. DO NOT EDIT.
# Espressif IoT Development Framework (ESP-IDF) Project Configuration
#
CONFIG_SOC_BROWNOUT_RESET_SUPPORTED="Not determined"
CONFIG_SOC_TWAI_BRP_DIV_SUPPORTED="Not determined"
CONFIG_SOC_DPORT_WORKAROUND="Not determined"
CONFIG_SOC_CAPS_ECO_VER_MAX=301
CONFIG_SOC_ADC_SUPPORTED=y
CONFIG_SOC_DAC_SUPPORTED=y

erikcorry

--- rolled-sizes.txt	2023-08-16 16:23:09.982969715 +0200
+++ unrolled-sizes.txt	2023-08-16 16:22:34.159637286 +0200
@@ -1,33 +1,33 @@
 Total sizes:
-Used static DRAM:   49824 bytes (  74756 remain, 40.0% used)
-      .data size:   22008 bytes
-      .bss  size:   27816 bytes
-Used static IRAM:  132298 bytes (  -1226 remain, 100.9% used) Overflow detected!
-      .text size:  131271 bytes
+Used static DRAM:   50092 bytes (  74488 remain, 40.2% used)