Builtin enable return code with SYS_EXIT_EXTENDED
A previous commit introduced the ability to use the semi-hosting SYS_EXIT_EXTENDED operation to libgloss, this commit adds the same ability to the sys/arm/ backend so that building newlib only will provide the same capabilities.
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@ -30,7 +30,7 @@ int _stat (const char *, struct stat *);
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int _fstat (int, struct stat *);
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void * _sbrk (ptrdiff_t);
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pid_t _getpid (void);
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int _kill (int, int) __attribute__((__noreturn__));
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int _kill (int, int);
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void _exit (int);
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int _close (int);
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int _swiclose (int);
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@ -49,6 +49,7 @@ static int error (int);
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static int get_errno (void);
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static int remap_handle (int);
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static int findslot (int);
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static int _kill_shared (int, int, int) __attribute__((__noreturn__));
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/* Register name faking - works in collusion with the linker. */
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register char * stack_ptr asm ("sp");
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@ -424,21 +425,35 @@ _close (int file)
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return wrap (_swiclose (file));
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}
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int
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_kill (int pid, int sig)
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static int
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_kill_shared (int pid, int sig, int reason)
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{
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(void)pid; (void)sig;
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(void) pid; (void) sig;
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#ifdef ARM_RDI_MONITOR
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/* Note: The pid argument is thrown away. */
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switch (sig) {
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case SIGABRT:
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do_AngelSWI (AngelSWI_Reason_ReportException,
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(void *) ADP_Stopped_RunTimeError);
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__builtin_unreachable();
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default:
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do_AngelSWI (AngelSWI_Reason_ReportException,
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(void *) ADP_Stopped_ApplicationExit);
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}
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int block[2];
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block[1] = sig;
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block[0] = reason;
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int insn;
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#if SEMIHOST_V2
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if (_has_ext_exit_extended ())
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{
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insn = AngelSWI_Reason_ReportExceptionExtended;
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}
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else
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#endif
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{
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insn = AngelSWI_Reason_ReportException;
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}
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#if SEMIHOST_V2
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if (_has_ext_exit_extended ())
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do_AngelSWI (insn, block);
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else
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#endif
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do_AngelSWI (insn, (void*)block[0]);
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#else
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asm ("swi %a0" :: "i" (SWI_Exit));
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#endif
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@ -446,15 +461,24 @@ _kill (int pid, int sig)
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__builtin_unreachable();
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}
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int
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_kill (int pid, int sig)
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{
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if (sig == SIGABRT)
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_kill_shared (pid, sig, ADP_Stopped_RunTimeError);
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else
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_kill_shared (pid, sig, ADP_Stopped_ApplicationExit);
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}
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void
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_exit (int status)
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{
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/* There is only one SWI for both _exit and _kill. For _exit, call
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the SWI with the second argument set to -1, an invalid value for
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signum, so that the SWI handler can distinguish the two calls.
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Note: The RDI implementation of _kill throws away both its
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arguments. */
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_kill(status, -1);
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/* The same SWI is used for both _exit and _kill.
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For _exit, call the SWI with "reason" set to ADP_Stopped_ApplicationExit
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to mark a standard exit.
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Note: The RDI implementation of _kill_shared throws away all its
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arguments and all implementations ignore the first argument. */
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_kill_shared (-1, status, ADP_Stopped_ApplicationExit);
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}
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pid_t
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