Commit 83704cef authored by Alex Bennée's avatar Alex Bennée Committed by Peter Maydell
Browse files

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: default avatarAlex Bennée <alex.bennee@linaro.org>
Message-id: 20190913151845.12582-7-alex.bennee@linaro.org
Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent e2672559

tests/tcg/aarch64/Makefile.target

+5 −0
Original line number Diff line number Diff line
@@ -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)

tests/tcg/arm/Makefile.target

+5 −0
Original line number Diff line number Diff line
@@ -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

tests/tcg/arm/semihosting.c

0 → 100644
+45 −0
Original line number Diff line number Diff line 
/*

 * 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;

}