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tests: Add fibonacci test

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Test added to test labels
This commit is contained in:
Merry 2022-07-09 22:22:46 +01:00
parent 960e715734
commit 6f074d8db8
1 changed files with 49 additions and 0 deletions
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49
tests/basic.cpp
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@ -28,3 +28,52 @@ TEST_CASE("Basic Test")
int result = ((int (*)())mem.ptr())();
REQUIRE(result == 42);
}
TEST_CASE("Fibonacci")
{
using namespace oaknut;
using namespace oaknut::util;
CodeBlock mem{4096};
CodeGenerator code{mem.ptr()};
mem.unprotect();
auto fib = code.ptr<int (*)(int)>();
Label start, end, zero, recurse;
code.l(start);
code.STP(X29, X30, SP, PRE_INDEXED, -32);
code.STP(X20, X19, SP, 16);
code.MOV(X29, SP);
code.MOV(W19, W0);
code.SUBS(W0, W0, 1);
code.B(LT, zero);
code.B(NE, recurse);
code.MOVZ(W0, 1);
code.B(end);
code.l(zero);
code.MOV(W0, WZR);
code.B(end);
code.l(recurse);
code.BL(start);
code.MOV(W20, W0);
code.SUB(W0, W19, 2);
code.BL(start);
code.ADD(W0, W0, W20);
code.l(end);
code.LDP(X20, X19, SP, 16);
code.LDP(X29, X30, SP, POST_INDEXED, 32);
code.RET(X30);
mem.protect();
mem.invalidate_all();
REQUIRE(fib(0) == 0);
REQUIRE(fib(1) == 1);
REQUIRE(fib(5) == 5);
REQUIRE(fib(9) == 34);
}