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Implement instructions 0x03C-0x053, add flag constants and fix execute dispatch

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This commit is contained in:
Diego De Gante Pérez
2026-04-06 12:33:43 -06:00
parent 4e1a601175
commit 429596af86
5 changed files with 244 additions and 22 deletions
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6
src/spider/runtime/cpu/CPU.cpp
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@@ -95,8 +95,12 @@ namespace spider {
_addrm++;
}
/**
instrMap[] is the correct 512-entry dispatch
table that maps operation codes to instruction methods.
*/
void CPU::execute() {
(this->*(CPU::addrModes[_opcode]))();
(this->*(CPU::instrMap[_opcode]))();
}
// Addressing Modes //

8
src/spider/runtime/cpu/CPU.hpp
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@@ -15,6 +15,14 @@ namespace spider {
static constexpr const u64 FLAG_INTERRUPT_REQUEST = 0b0000000000000000000000000000000000000000000000000000000000000100;
static constexpr const u64 FLAG_EXCEPTION = 0b0000000000000000000000000000000000000000000000000000000000001000;
static constexpr const u64 FLAG_MEMORY_MODE = 0b0000000000000000000000000000000000000000000000000000000000110000;
static constexpr const u64 FLAG_EXT_INT_DISABLE = 0b0000000000000000000000000000000000000000000000000000000010000000; // bit 7
static constexpr const u64 FLAG_EQUAL = 0b0000000000000000000000000000000000000000000000000000010000000000; // bit 10
static constexpr const u64 FLAG_EPSILON_ENABLE = 0b0000000000000000000000000000000000000000000000000001000000000000; // bit 12
static constexpr const u64 FLAG_HOTSWAP_SIGNAL = 0b0000000000000000000000000000000000000000000000010000000000000000; // bit 16
static constexpr const u64 FLAG_USER_A = 0b0000000000000000000000000000000000000000000100000000000000000000; // bit 20
static constexpr const u64 FLAG_USER_B = 0b0000000000000000000000000000000000000000001000000000000000000000; // bit 21
static constexpr const u64 FLAG_USER_C = 0b0000000000000000000000000000000000000000010000000000000000000000; // bit 22
static constexpr const u64 FLAG_USER_D = 0b0000000000000000000000000000000000000000100000000000000000000000; // bit 23
public: // Map of addressing modes & Instructions