From 01ef3dd9c5fa7a56aa370f244dd08e05c73010f5 Mon Sep 17 00:00:00 2001 From: Szabolcs Nagy Date: Tue, 10 Mar 2015 21:18:41 +0000 Subject: add aarch64 port This adds complete aarch64 target support including bigendian subarch. Some of the long double math functions are known to be broken otherwise interfaces should be fully functional, but at this point consider this port experimental. Initial work on this port was done by Sireesh Tripurari and Kevin Bortis. --- src/fenv/aarch64/fenv.s | 67 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 src/fenv/aarch64/fenv.s (limited to 'src/fenv') diff --git a/src/fenv/aarch64/fenv.s b/src/fenv/aarch64/fenv.s new file mode 100644 index 00000000..f0db5d9d --- /dev/null +++ b/src/fenv/aarch64/fenv.s @@ -0,0 +1,67 @@ +.global fegetround +.type fegetround,%function +fegetround: + mrs x0, fpcr + and w0, w0, #0xc00000 + ret + +.global __fesetround +.type __fesetround,%function +__fesetround: + mrs x1, fpcr + bic w1, w1, #0xc00000 + orr w1, w1, w0 + msr fpcr, x1 + mov w0, #0 + ret + +.global fetestexcept +.type fetestexcept,%function +fetestexcept: + and w0, w0, #0x1f + mrs x1, fpsr + and w0, w0, w1 + ret + +.global feclearexcept +.type feclearexcept,%function +feclearexcept: + and w0, w0, #0x1f + mrs x1, fpsr + bic w1, w1, w0 + msr fpsr, x1 + mov w0, #0 + ret + +.global feraiseexcept +.type feraiseexcept,%function +feraiseexcept: + and w0, w0, #0x1f + mrs x1, fpsr + orr w1, w1, w0 + msr fpsr, x1 + mov w0, #0 + ret + +.global fegetenv +.type fegetenv,%function +fegetenv: + mrs x1, fpcr + mrs x2, fpsr + stp w1, w2, [x0] + mov w0, #0 + ret + +// TODO preserve some bits +.global fesetenv +.type fesetenv,%function +fesetenv: + mov x1, #0 + mov x2, #0 + cmn x0, #1 + b.eq 1f + ldp w1, w2, [x0] +1: msr fpcr, x1 + msr fpsr, x2 + mov w0, #0 + ret -- cgit v1.2.1