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[PULL 68/68] tests/tcg/nios2: Add test-shadow-1
From: |
Richard Henderson |
Subject: |
[PULL 68/68] tests/tcg/nios2: Add test-shadow-1 |
Date: |
Tue, 26 Apr 2022 11:19:07 -0700 |
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>
---
tests/tcg/nios2/Makefile.softmmu-target | 1 +
tests/tcg/nios2/test-shadow-1.S | 40 +++++++++++++++++++++++++
2 files changed, 41 insertions(+)
create mode 100644 tests/tcg/nios2/test-shadow-1.S
diff --git a/tests/tcg/nios2/Makefile.softmmu-target
b/tests/tcg/nios2/Makefile.softmmu-target
index cea27472a6..c3d0594a39 100644
--- a/tests/tcg/nios2/Makefile.softmmu-target
+++ b/tests/tcg/nios2/Makefile.softmmu-target
@@ -30,3 +30,4 @@ QEMU_OPTS = -M 10m50-ghrd,vic=on -semihosting >$@.out -kernel
memory: CFLAGS+=-DCHECK_UNALIGNED=0
TESTS += $(MULTIARCH_TESTS)
+TESTS += test-shadow-1
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
--
2.34.1
- [PULL 45/68] target/nios2: Split out helpers for gen_i_math_logic, (continued)
- [PULL 45/68] target/nios2: Split out helpers for gen_i_math_logic, Richard Henderson, 2022/04/26
- [PULL 50/68] target/nios2: Drop CR_STATUS_EH from tb->flags, Richard Henderson, 2022/04/26
- [PULL 52/68] target/nios2: Create gen_jumpr, Richard Henderson, 2022/04/26
- [PULL 57/68] target/nios2: Introduce shadow register sets, Richard Henderson, 2022/04/26
- [PULL 55/68] target/nios2: Use tcg_gen_lookup_and_goto_ptr, Richard Henderson, 2022/04/26
- [PULL 59/68] target/nios2: Update helper_eret for shadow registers, Richard Henderson, 2022/04/26
- [PULL 60/68] target/nios2: Implement EIC interrupt processing, Richard Henderson, 2022/04/26
- [PULL 61/68] target/nios2: Advance pc when raising exceptions, Richard Henderson, 2022/04/26
- [PULL 62/68] linux-user/nios2: Handle various SIGILL exceptions, Richard Henderson, 2022/04/26
- [PULL 65/68] hw/nios2: Move memory regions into Nios2Machine, Richard Henderson, 2022/04/26
- [PULL 68/68] tests/tcg/nios2: Add test-shadow-1,
Richard Henderson <=
- [PULL 48/68] target/nios2: Split out helpers for gen_rr_shift, Richard Henderson, 2022/04/26
- [PULL 67/68] tests/tcg/nios2: Add semihosting multiarch tests, Richard Henderson, 2022/04/26
- [PULL 47/68] target/nios2: Split out helpers for gen_rr_mul_high, Richard Henderson, 2022/04/26
- [PULL 58/68] target/nios2: Implement rdprs, wrprs, Richard Henderson, 2022/04/26
- [PULL 63/68] hw/intc: Vectored Interrupt Controller (VIC), Richard Henderson, 2022/04/26
- [PULL 66/68] hw/nios2: Machine with a Vectored Interrupt Controller, Richard Henderson, 2022/04/26
- Re: [PULL 00/68] nios2 patch queue, Richard Henderson, 2022/04/26