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getting to my first branch now

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iris
2026-05-12 14:27:59 +02:00
parent e598f02995
commit 2be9570aa9
6 changed files with 50 additions and 5 deletions
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core/broadway/instructions.cpp
+9 -2
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@@ -1,7 +1,14 @@
#include <broadway.hpp>
#include <broadway/utils.hpp>
namespace weee::core {
void broadway::addis(ircolib::u32 instr) {
if (utils::RA(instr) == 0) { // lis
gpr[utils::RD(instr)] = ircolib::s32(utils::SIMM(instr)) << 16;
return;
}
gpr[utils::RD(instr)] = gpr[utils::RA(instr)] + (ircolib::s32(utils::SIMM(instr)) << 16);
}
void broadway::ori(ircolib::u32 instr) { gpr[utils::RA(instr)] = gpr[utils::RS(instr)] | utils::UIMM(instr); }
} // namespace weee::core
core/broadway/utils.hpp
+11
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@@ -0,0 +1,11 @@
#pragma once
#include <broadway.hpp>
namespace weee::core::utils {
static inline ircolib::u8 primary(ircolib::u32 instr) { return (instr >> 26) & 0x3f; }
static inline ircolib::u8 RD(ircolib::u32 instr) { return (instr >> 21) & 0x1f; }
static inline ircolib::u8 RS(ircolib::u32 instr) { return RD(instr); }
static inline ircolib::u8 RA(ircolib::u32 instr) { return (instr >> 16) & 0x1f; }
static inline ircolib::u16 UIMM(ircolib::u32 instr) { return instr & 0xffff; }
static inline ircolib::s16 SIMM(ircolib::u32 instr) { return UIMM(instr); }
} // namespace weee::core::utils