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target-arm/arm-semi.c: SYS_EXIT on A64 takes a parameter block

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The A64 semihosting API changes the interface for SYS_EXIT so
that instead of taking a single exception type in a register,
it takes a parameter block containing the exception type and
a sub-code. Implement this.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Christopher Covington <cov@codeaurora.org>
Message-id: 1439483745-28752-9-git-send-email-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2015-09-07 10:39:28 +01:00
parent e9ebfbfcf3
commit 7446d35e1d
1 changed files with 18 additions and 3 deletions
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21
target-arm/arm-semi.c
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@ -619,9 +619,24 @@ target_ulong do_arm_semihosting(CPUARMState *env)
return 0;
}
case TARGET_SYS_EXIT:
/* ARM specifies only Stopped_ApplicationExit as normal
* exit, everything else is considered an error */
ret = (args == ADP_Stopped_ApplicationExit) ? 0 : 1;
if (is_a64(env)) {
/* The A64 version of this call takes a parameter block,
* so the application-exit type can return a subcode which
* is the exit status code from the application.
*/
GET_ARG(0);
GET_ARG(1);
if (arg0 == ADP_Stopped_ApplicationExit) {
ret = arg1;
} else {
ret = 1;
}
} else {
/* ARM specifies only Stopped_ApplicationExit as normal
* exit, everything else is considered an error */
ret = (args == ADP_Stopped_ApplicationExit) ? 0 : 1;
}
gdb_exit(env, ret);
exit(ret);
case TARGET_SYS_SYNCCACHE: