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jit: Implement arm32 instruction decoding logic

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Introduces the core Arm32 decoder, including the instruction parsing
mechanism and an initial set of defined instructions.

Signed-off-by: Ronald Caesar <github43132@proton.me>
This commit is contained in:
Ronald Caesar 2025-10-19 00:33:42 -04:00
parent 2e2b5df20c
commit a0ed4382a5
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GPG key ID: 04307C401999C596
5 changed files with 308 additions and 337 deletions
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10
src/main.cpp
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@ -19,8 +19,14 @@
int main()
{
pound::host::memory::arena_t arena = pound::host::memory::arena_init(256);
pound::jit::decoder::arm32_init(arena, &pound::jit::decoder::g_arm32_decoder);
pound::host::memory::arena_t arena = pound::host::memory::arena_init(8192);
pound::jit::decoder::arm32_decoder_t decoder = {};
pound::jit::decoder::arm32_init(arena, &decoder);
/* Add r0, r0, #1 */
pound::jit::decoder::arm32_decode(&decoder, 0xE2800001);
/* Sub r0, r0, #1 */
pound::jit::decoder::arm32_decode(&decoder, 0xE2400001);
#if 0
gui::window_t window = {.data = nullptr, .gl_context = nullptr};
(void)gui::window_init(&window, "Pound Emulator", 640, 480);