From 09e59ae226f2fcb469b944c815b1e1bf46d4c569 Mon Sep 17 00:00:00 2001 From: ValeriHristov Date: Sun, 25 Nov 2018 17:49:14 +0200 Subject: Implement comparison operators (#71) * Implement comparison operators. * Remove debug code. * Undo test code. --- spasm/src/spasm.cpp | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) (limited to 'spasm/src/spasm.cpp') diff --git a/spasm/src/spasm.cpp b/spasm/src/spasm.cpp index 58fb6d4..4d30946 100644 --- a/spasm/src/spasm.cpp +++ b/spasm/src/spasm.cpp @@ -187,6 +187,38 @@ Spasm::RunResult Spasm::run() lesseq(arg0, arg1, arg2); break; } + case OpCodes::Greater: + { + const auto arg0 = read_reg(size); + const auto arg1 = read_reg(size); + const auto arg2 = read_reg(size); + greater(arg0, arg1, arg2); + break; + } + case OpCodes::GreaterEq: + { + const auto arg0 = read_reg(size); + const auto arg1 = read_reg(size); + const auto arg2 = read_reg(size); + greatereq(arg0, arg1, arg2); + break; + } + case OpCodes::Equal: + { + const auto arg0 = read_reg(size); + const auto arg1 = read_reg(size); + const auto arg2 = read_reg(size); + equal(arg0, arg1, arg2); + break; + } + case OpCodes::NotEqual: + { + const auto arg0 = read_reg(size); + const auto arg1 = read_reg(size); + const auto arg2 = read_reg(size); + not_equal(arg0, arg1, arg2); + break; + } default: { std::cerr << opcode << ": not implemented" << std::endl; @@ -380,6 +412,26 @@ void Spasm::lesseq(reg_t a0, reg_t a1, reg_t a2) set_local(a0, get_local(a1) <= get_local(a2)); } +void Spasm::greater(reg_t a0, reg_t a1, reg_t a2) +{ + set_local(a0, get_local(a1) > get_local(a2)); +} + +void Spasm::greatereq(reg_t a0, reg_t a1, reg_t a2) +{ + set_local(a0, get_local(a1) >= get_local(a2)); +} + +void Spasm::equal(reg_t a0, reg_t a1, reg_t a2) +{ + set_local(a0, fabs(get_local(a1) - get_local(a2)) < 0.0001); +} + +void Spasm::not_equal(reg_t a0, reg_t a1, reg_t a2) +{ + set_local(a0, fabs(get_local(a1) - get_local(a2)) > 0.0001); +} + data_t Spasm::get_local(reg_t reg) { assert(&data_stack[0] <= (m_FP + reg)); -- cgit v1.3.1-23-gd82d