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| author | Richard Henderson | 2022-04-21 17:17:35 +0200 |
|---|---|---|
| committer | Richard Henderson | 2022-04-26 17:17:10 +0200 |
| commit | 7f176c5a0bcb70492f3b158a36311e75f1eb87d7 (patch) | |
| tree | 6123811392098ef003f89c6f37995986b3f9be41 /tests/tcg/nios2/test-shadow-1.S | |
| parent | tests/tcg/nios2: Add semihosting multiarch tests (diff) | |
| download | qemu-7f176c5a0bcb70492f3b158a36311e75f1eb87d7.tar.gz qemu-7f176c5a0bcb70492f3b158a36311e75f1eb87d7.tar.xz qemu-7f176c5a0bcb70492f3b158a36311e75f1eb87d7.zip | |
tests/tcg/nios2: Add test-shadow-1
Add a regression test for tcg indirect global lowering.
This appeared with nios2, with cps != 0, so that we use
indirection into the shadow register set. An indirect
call verifies alignment of rA. The use of rA was live
across the brcond leading to a tcg_debug_assert failure.
Cc: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20220421151735.31996-65-richard.henderson@linaro.org>
Diffstat (limited to 'tests/tcg/nios2/test-shadow-1.S')
| -rw-r--r-- | tests/tcg/nios2/test-shadow-1.S | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/tests/tcg/nios2/test-shadow-1.S b/tests/tcg/nios2/test-shadow-1.S new file mode 100644 index 0000000000..79ef69db12 --- /dev/null +++ b/tests/tcg/nios2/test-shadow-1.S @@ -0,0 +1,40 @@ +/* + * Regression test for TCG indirect global lowering. + * + * Copyright Linaro Ltd 2022 + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "semicall.h" + + .text + .set noat + .align 2 + .globl main + .type main, @function + +main: + /* Initialize r0 in shadow register set 1. */ + movhi at, 1 /* PRS=1, CRS=0, RSIE=0, PIE=0 */ + wrctl status, at + wrprs zero, zero + + /* Change current register set to 1. */ + movi at, 1 << 10 /* PRS=0, CRS=1, RSIE=0, PIE=0 */ + wrctl estatus, at + movia ea, 1f + eret + + /* Load address for callr, then end TB. */ +1: movia at, 3f + br 2f + + /* Test case! TCG abort on indirect lowering across brcond. */ +2: callr at + + /* exit(0) */ +3: movi r4, HOSTED_EXIT + movi r5, 0 + semihosting_call + + .size main, . - main |