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tests/tcg: add linux-user semihosting smoke test for ARM 

We already use semihosting for the system stuff so this is a simple
smoke test to ensure we are working OK on linux-user.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20190913151845.12582-7-alex.bennee@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Alex Bennée 2019-09-19 14:18:41 +01:00 committed by Peter Maydell
parent e267255957
commit 83704ceff1
3 changed files with 55 additions and 0 deletions
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5
tests/tcg/aarch64/Makefile.target
View File

@ -21,4 +21,9 @@ run-fcvt: fcvt
AARCH64_TESTS += pauth-1 pauth-2
run-pauth-%: QEMU_OPTS += -cpu max
# Semihosting smoke test for linux-user
AARCH64_TESTS += semihosting
run-semihosting: semihosting
$(call run-test,$<,$(QEMU) $< 2> $<.err, "$< on $(TARGET_NAME)")
TESTS += $(AARCH64_TESTS)

5
tests/tcg/arm/Makefile.target
View File

@ -27,6 +27,11 @@ run-fcvt: fcvt
$(call run-test,fcvt,$(QEMU) $<,"$< on $(TARGET_NAME)")
$(call diff-out,fcvt,$(ARM_SRC)/fcvt.ref)
# Semihosting smoke test for linux-user
ARM_TESTS += semihosting
run-semihosting: semihosting
$(call run-test,$<,$(QEMU) $< 2> $<.err, "$< on $(TARGET_NAME)")
TESTS += $(ARM_TESTS)
# On ARM Linux only supports 4k pages

45
tests/tcg/arm/semihosting.c Normal file
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@ -0,0 +1,45 @@
/*
* linux-user semihosting checks
*
* Copyright (c) 2019
* Written by Alex Bennée <alex.bennee@linaro.org>
*
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#include <stdint.h>
#define SYS_WRITE0 0x04
#define SYS_REPORTEXC 0x18
void __semi_call(uintptr_t type, uintptr_t arg0)
{
#if defined(__arm__)
register uintptr_t t asm("r0") = type;
register uintptr_t a0 asm("r1") = arg0;
asm("svc 0xab"
: /* no return */
: "r" (t), "r" (a0));
#else
register uintptr_t t asm("x0") = type;
register uintptr_t a0 asm("x1") = arg0;
asm("hlt 0xf000"
: /* no return */
: "r" (t), "r" (a0));
#endif
}
int main(int argc, char *argv[argc])
{
#if defined(__arm__)
uintptr_t exit_code = 0x20026;
#else
uintptr_t exit_block[2] = {0x20026, 0};
uintptr_t exit_code = (uintptr_t) &exit_block;
#endif
__semi_call(SYS_WRITE0, (uintptr_t) "Hello World");
__semi_call(SYS_REPORTEXC, exit_code);
/* if we get here we failed */
return -1;
}