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| author | Richard Henderson <richard.henderson@linaro.org> | 2024-06-25 11:35:26 -0700 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2024-07-01 12:48:55 +0100 |
| commit | 7619129f0d4a14d918227c5c47ad7433662e9ccc (patch) | |
| tree | 5baf8b36fde98870c0a2211a6c0f9f286f4b3eb1 /tests | |
| parent | a5b72ccc0f21183e7863745b0d82f144ecfb59f5 (diff) | |
| download | qemu-7619129f0d4a14d918227c5c47ad7433662e9ccc.zip qemu-7619129f0d4a14d918227c5c47ad7433662e9ccc.tar.gz qemu-7619129f0d4a14d918227c5c47ad7433662e9ccc.tar.bz2 | |
target/arm: Fix FJCVTZS vs flush-to-zero
Input denormals cause the Javascript inexact bit
(output to Z) to be set.
Cc: qemu-stable@nongnu.org
Fixes: 6c1f6f2733a ("target/arm: Implement ARMv8.3-JSConv")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2375
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240625183536.1672454-4-richard.henderson@linaro.org
[PMM: fixed hardcoded tab in test case]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/tcg/aarch64/Makefile.target | 3 | ||||
| -rw-r--r-- | tests/tcg/aarch64/test-2375.c | 21 |
2 files changed, 23 insertions, 1 deletions
diff --git a/tests/tcg/aarch64/Makefile.target b/tests/tcg/aarch64/Makefile.target index 70d728a..4ecbca6 100644 --- a/tests/tcg/aarch64/Makefile.target +++ b/tests/tcg/aarch64/Makefile.target @@ -41,8 +41,9 @@ endif # Pauth Tests ifneq ($(CROSS_CC_HAS_ARMV8_3),) -AARCH64_TESTS += pauth-1 pauth-2 pauth-4 pauth-5 +AARCH64_TESTS += pauth-1 pauth-2 pauth-4 pauth-5 test-2375 pauth-%: CFLAGS += -march=armv8.3-a +test-2375: CFLAGS += -march=armv8.3-a run-pauth-1: QEMU_OPTS += -cpu max run-pauth-2: QEMU_OPTS += -cpu max # Choose a cpu with FEAT_Pauth but without FEAT_FPAC for pauth-[45]. diff --git a/tests/tcg/aarch64/test-2375.c b/tests/tcg/aarch64/test-2375.c new file mode 100644 index 0000000..84c7e7d --- /dev/null +++ b/tests/tcg/aarch64/test-2375.c @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* Copyright (c) 2024 Linaro Ltd */ +/* See https://gitlab.com/qemu-project/qemu/-/issues/2375 */ + +#include <assert.h> + +int main(void) +{ + int r, z; + + asm("msr fpcr, %2\n\t" + "fjcvtzs %w0, %d3\n\t" + "cset %1, eq" + : "=r"(r), "=r"(z) + : "r"(0x01000000L), /* FZ = 1 */ + "w"(0xfcff00L)); /* denormal */ + + assert(r == 0); + assert(z == 0); + return 0; +} |