7f176c5a0b
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>
41 lines
736 B
ArmAsm
41 lines
736 B
ArmAsm
/*
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* Regression test for TCG indirect global lowering.
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*
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* Copyright Linaro Ltd 2022
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "semicall.h"
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.text
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.set noat
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.align 2
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.globl main
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.type main, @function
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main:
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/* Initialize r0 in shadow register set 1. */
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movhi at, 1 /* PRS=1, CRS=0, RSIE=0, PIE=0 */
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wrctl status, at
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wrprs zero, zero
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/* Change current register set to 1. */
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movi at, 1 << 10 /* PRS=0, CRS=1, RSIE=0, PIE=0 */
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wrctl estatus, at
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movia ea, 1f
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eret
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/* Load address for callr, then end TB. */
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1: movia at, 3f
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br 2f
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/* Test case! TCG abort on indirect lowering across brcond. */
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2: callr at
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/* exit(0) */
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3: movi r4, HOSTED_EXIT
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movi r5, 0
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semihosting_call
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.size main, . - main
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