tests/tcg: fix semihosting SYS_EXIT for aarch64 in boot.S

We don't expect to hit exceptions in our testing so currently all the
vectors report an un-expected exception and then attempt to exit.
However for aarch64 we should always use the extended information
block as we do in _exit. Rather than duplicate the code on the error
handler just branch to the _exit handler with a failing status code.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250404115641.258048-1-alex.bennee@linaro.org>

diff --git a/tests/tcg/aarch64/system/boot.S b/tests/tcg/aarch64/system/boot.S
index 4eb1b35b88dab9a90c75c2ec90ba15b03cbe704d..a5df9c173d8fc479e5528bb771508dbb6eff991e 100644 (file)
--- a/tests/tcg/aarch64/system/boot.S
+++ b/tests/tcg/aarch64/system/boot.S
@@ -73,9 +73,8 @@ lower_a32_serror:
        mov     x0, SYS_WRITE0
        adr     x1, .error
        semihosting_call
-       mov     x0, SYS_EXIT
-       mov     x1, 1
-       semihosting_call
+       mov     x0, 1 /* EXIT_FAILURE */
+       bl      _exit
        /* never returns */
 
        .section .rodata