Amneesh Singh
0f09874929
now can we remove the pimpl? Signed-off-by: Amneesh Singh <natto@weirdnatto.in>
97 lines
2.5 KiB
C++
97 lines
2.5 KiB
C++
#include "fixture.hh"
|
|
|
|
Psr
|
|
CpuFixture::psr(bool spsr) {
|
|
Psr psr(0);
|
|
CpuImpl tmp = cpu;
|
|
arm::Instruction instruction(
|
|
Condition::AL,
|
|
arm::PsrTransfer{ .operand = 0,
|
|
.spsr = spsr,
|
|
.type = arm::PsrTransfer::Type::Mrs,
|
|
.imm = false });
|
|
|
|
instruction.exec(tmp);
|
|
|
|
psr.set_all(getr_(0, tmp));
|
|
return psr;
|
|
}
|
|
|
|
void
|
|
CpuFixture::set_psr(Psr psr, bool spsr) {
|
|
// R0
|
|
uint32_t old = getr(0);
|
|
|
|
setr(0, psr.raw());
|
|
|
|
arm::Instruction instruction(
|
|
Condition::AL,
|
|
arm::PsrTransfer{ .operand = 0,
|
|
.spsr = spsr,
|
|
.type = arm::PsrTransfer::Type::Msr,
|
|
.imm = false });
|
|
|
|
instruction.exec(cpu);
|
|
|
|
setr(0, old);
|
|
}
|
|
|
|
// We need these workarounds to just use the public API and not private
|
|
// fields. Assuming that these work correctly is necessary. Besides, all it
|
|
// matters is that the public API is correct.
|
|
uint32_t
|
|
CpuFixture::getr_(uint8_t r, CpuImpl& cpu) {
|
|
size_t addr = 13000;
|
|
size_t offset = r == 15 ? 4 : 0;
|
|
uint32_t word = bus.read_word(addr + offset);
|
|
CpuImpl tmp = cpu;
|
|
uint32_t ret = 0xFFFFFFFF;
|
|
uint8_t base = r ? 0 : 1;
|
|
|
|
// set R0/R1 = 0
|
|
arm::Instruction zero(
|
|
Condition::AL,
|
|
arm::DataProcessing{ .operand = 0u,
|
|
.rd = base,
|
|
.rn = 0,
|
|
.set = false,
|
|
.opcode = arm::DataProcessing::OpCode::MOV });
|
|
|
|
// get register
|
|
arm::Instruction get(
|
|
Condition::AL,
|
|
arm::SingleDataTransfer{ .offset = static_cast<uint16_t>(addr),
|
|
.rd = r,
|
|
.rn = base,
|
|
.load = false,
|
|
.write = false,
|
|
.byte = false,
|
|
.up = true,
|
|
.pre = true });
|
|
|
|
zero.exec(tmp);
|
|
get.exec(tmp);
|
|
|
|
addr += offset;
|
|
|
|
ret = bus.read_word(addr);
|
|
|
|
bus.write_word(addr, word);
|
|
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
CpuFixture::setr_(uint8_t r, uint32_t value, CpuImpl& cpu) {
|
|
// set register
|
|
arm::Instruction set(
|
|
Condition::AL,
|
|
arm::DataProcessing{ .operand = value,
|
|
.rd = r,
|
|
.rn = 0,
|
|
.set = false,
|
|
.opcode = arm::DataProcessing::OpCode::MOV });
|
|
|
|
set.exec(cpu);
|
|
}
|