mirrors/mkxp-z
1
0
Fork 0
mirror of https://github.com/mkxp-z/mkxp-z.git synced 2025-08-23 23:33:45 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

Make sure sandbox stack grows upwards in big-endian libretro builds

Browse source
This commit is contained in:
刘皓 2025-05-10 19:23:43 -04:00
parent 3ba12e5672
commit 58e6f71ef3
No known key found for this signature in database
GPG key ID: 7901753DB465B711
3 changed files with 30 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

19
binding-sandbox/binding-base.h
View file

@ -289,7 +289,13 @@ namespace mkxp_sandbox {
fiber->stack.pop_back();
}
++fiber->stack_index;
b.stack_ptr = w2c_ruby_rb_wasm_get_stack_pointer(&b.instance()) - CEIL_WASMSTACKALIGN(declared_slots_size<T>::value);
b.stack_ptr = w2c_ruby_rb_wasm_get_stack_pointer(&b.instance())
#ifdef MKXPZ_BIG_ENDIAN
+
#else
-
#endif // MKXPZ_BIG_ENDIAN
CEIL_WASMSTACKALIGN(declared_slots_size<T>::value);
assert(b.stack_ptr % sizeof(VALUE) == 0);
assert(b.stack_ptr % WASMSTACKALIGN == 0);
if (declared_slots_size<T>::value != 0) {
@ -333,7 +339,16 @@ namespace mkxp_sandbox {
assert(fiber->stack.size() == fiber->stack_index);
w2c_ruby_rb_wasm_set_stack_pointer(&bind->instance(), fiber->stack.back().stack_ptr + CEIL_WASMSTACKALIGN(declared_slots_size<T>::value));
w2c_ruby_rb_wasm_set_stack_pointer(
&bind->instance(),
fiber->stack.back().stack_ptr
#ifdef MKXPZ_BIG_ENDIAN
-
#else
+
#endif // MKXPZ_BIG_ENDIAN
CEIL_WASMSTACKALIGN(declared_slots_size<T>::value)
);
bind->stack_ptr = fiber->stack.back().stack_ptr;
fiber->stack.pop_back();
}

14
libretro/sandbox-bindgen.rb
View file

@ -269,6 +269,16 @@ PRELUDE = <<~HEREDOC
bindings::bindings(std::shared_ptr<struct w2c_#{MODULE_NAME}> m) : binding_base(m) {}
static wasm_ptr_t _sbindgen_stack_push(wasm_ptr_t frame_pointer, wasm_size_t num_bytes) {
return frame_pointer
#ifdef MKXPZ_BIG_ENDIAN
+
#else
-
#endif // MKXPZ_BIG_ENDIAN
num_bytes;
}
static void _sbindgen_strcpy(char *dst, const char *src) {
#ifdef MKXPZ_BIG_ENDIAN
do {
@ -512,7 +522,7 @@ File.readlines('tags', chomp: true).each do |line|
coroutine_initializer += <<~HEREDOC
{
wasm_ptr_t fp = w2c_ruby_rb_wasm_get_stack_pointer(&bind.instance());
wasm_ptr_t sp = fp - CEIL_WASMSTACKALIGN(a#{args.length - 2} * sizeof(VALUE));
wasm_ptr_t sp = _sbindgen_stack_push(fp, CEIL_WASMSTACKALIGN(a#{args.length - 2} * sizeof(VALUE)));
if (sp > fp) {
throw std::bad_alloc();
}
@ -539,7 +549,7 @@ File.readlines('tags', chomp: true).each do |line|
do ++n; while (va_arg(b, VALUE));
va_end(b);
wasm_ptr_t fp = w2c_ruby_rb_wasm_get_stack_pointer(&bind.instance());
wasm_ptr_t sp = fp - CEIL_WASMSTACKALIGN(n * sizeof(VALUE));
wasm_ptr_t sp = _sbindgen_stack_push(fp, CEIL_WASMSTACKALIGN(n * sizeof(VALUE)));
if (sp > fp) {
throw std::bad_alloc();
}

2
src/display/bitmap.cpp
View file

@ -1979,7 +1979,7 @@ void Bitmap::replaceRaw(void *pixel_data, int size)
throw Exception(Exception::MKXPError, "Replacement bitmap data is not large enough (given %i bytes, need %i)", size, requiredsize);
#if defined(MKXPZ_RETRO) && defined(MKXPZ_BIG_ENDIAN)
output -= output_size;
pixel_data -= output_size;
std::reverse((uint8_t *)pixel_data, (uint8_t *)pixel_data + size);
#endif