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UserspaceEmulator: Support dynamically loaded programs

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When loading dynamic objects, the emulator loads the interpreter,
generates an auxiliary vector and starts executing the loader.

Additionally, this commits also makes the MallocTracer and backtrace
symbolication work for dynamically loaded programs.
This commit is contained in:
Itamar 2020-11-23 20:00:35 +02:00 • committed by Andreas Kling
parent 28cda567c1
commit 72ca45e300
9 changed files with 247 additions and 64 deletions
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7
DevTools/UserspaceEmulator/SoftCPU.cpp
View file

@ -229,6 +229,13 @@ void SoftCPU::push_string(const StringView& string)
m_emulator.mmu().write8({ 0x20, esp().value() + string.length() }, shadow_wrap_as_initialized((u8)'\0'));
}
void SoftCPU::push_buffer(const u8* data, size_t size)
{
set_esp({ esp().value() - size, esp().shadow() });
warn_if_uninitialized(esp(), "push_buffer");
m_emulator.mmu().copy_to_vm(esp().value(), data, size);
}
void SoftCPU::push32(ValueWithShadow<u32> value)
{
set_esp({ esp().value() - sizeof(u32), esp().shadow() });