[PATCH] MIPS Linux signals

[Michael Eager <eager@eagerm.com>]

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This patch adds a target function to translate MIPS Linux signals
to GDB internal signal numbers.

2012-06-01  Michael Eager  <eager@eagercon.com>

  	* mips-linux-tdep.c (mips_gdb_signal_from_target): New
  	* mips-linux-tdep.h (mips_signals): New


-- 
Michael Eager	 eager@eagercon.com
1960 Park Blvd., Palo Alto, CA 94306  650-325-8077

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Index: gdb/mips-linux-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/mips-linux-tdep.c,v
retrieving revision 1.94
diff -r1.94 mips-linux-tdep.c
42a43
> #include "gdb_signals.h"
1332a1334,1428
> /* Translate signals based on MIPS signal values.  
>    Adapted from gdb/common/signals.c.  */
> 
> static enum gdb_signal
> mips_gdb_signal_from_target (struct gdbarch *gdbarch, int signo)
> {
>   switch (signo) 
>     {
>     case 0:
>       return GDB_SIGNAL_0;
>     case MIPS_SIGHUP:
>       return GDB_SIGNAL_HUP;
>     case MIPS_SIGINT:
>       return GDB_SIGNAL_INT;
>     case MIPS_SIGQUIT:
>       return GDB_SIGNAL_QUIT;
>     case MIPS_SIGILL:
>       return GDB_SIGNAL_ILL;
>     case MIPS_SIGTRAP:
>       return GDB_SIGNAL_TRAP;
>     case MIPS_SIGABRT:
>       return GDB_SIGNAL_ABRT;
>     case MIPS_SIGEMT:
>       return GDB_SIGNAL_EMT;
>     case MIPS_SIGFPE:
>       return GDB_SIGNAL_FPE;
>     case MIPS_SIGKILL:
>       return GDB_SIGNAL_KILL;
>     case MIPS_SIGBUS:
>       return GDB_SIGNAL_BUS;
>     case MIPS_SIGSEGV:
>       return GDB_SIGNAL_SEGV;
>     case MIPS_SIGSYS:
>       return GDB_SIGNAL_SYS;
>     case MIPS_SIGPIPE:
>       return GDB_SIGNAL_PIPE;
>     case MIPS_SIGALRM:
>       return GDB_SIGNAL_ALRM;
>     case MIPS_SIGTERM:
>       return GDB_SIGNAL_TERM;
>     case MIPS_SIGUSR1:
>       return GDB_SIGNAL_USR1;
>     case MIPS_SIGUSR2:
>       return GDB_SIGNAL_USR2;
>     case MIPS_SIGCHLD:
>       return GDB_SIGNAL_CHLD;
>     case MIPS_SIGPWR:
>       return GDB_SIGNAL_PWR;
>     case MIPS_SIGWINCH:
>       return GDB_SIGNAL_WINCH;
>     case MIPS_SIGURG:
>       return GDB_SIGNAL_URG;
>     case MIPS_SIGPOLL:
>       return GDB_SIGNAL_POLL;
>     case MIPS_SIGSTOP:
>       return GDB_SIGNAL_STOP;
>     case MIPS_SIGTSTP:
>       return GDB_SIGNAL_TSTP;
>     case MIPS_SIGCONT:
>       return GDB_SIGNAL_CONT;
>     case MIPS_SIGTTIN:
>       return GDB_SIGNAL_TTIN;
>     case MIPS_SIGTTOU:
>       return GDB_SIGNAL_TTOU;
>     case MIPS_SIGVTALRM:
>       return GDB_SIGNAL_VTALRM;
>     case MIPS_SIGPROF:
>       return GDB_SIGNAL_PROF;
>     case MIPS_SIGXCPU:
>       return GDB_SIGNAL_XCPU;
>     case MIPS_SIGXFSZ:
>       return GDB_SIGNAL_XFSZ;
>   }
> 
> #if defined (REALTIME_LO)
>   if (signo >= REALTIME_LO && signo < REALTIME_HI)
>     {
>       /* This block of GDB_SIGNAL_REALTIME value is in order.  */
>       if (33 <= signo && signo <= 63)
> 	return (enum gdb_signal)
> 	  (signo - 33 + (int) GDB_SIGNAL_REALTIME_33);
>       else if (signo == 32)
> 	return GDB_SIGNAL_REALTIME_32;
>       else if (64 <= signo && signo <= 127)
> 	return (enum gdb_signal)
> 	  (signo - 64 + (int) GDB_SIGNAL_REALTIME_64);
>       else
> 	error ("GDB bug: unrecognized real-time signal");
>     }
> #endif
> 
> 
>   return GDB_SIGNAL_UNKNOWN;
> }
> 
1416a1513,1515
>   set_gdbarch_gdb_signal_from_target (gdbarch,
> 				      mips_gdb_signal_from_target);
> 
Index: gdb/mips-linux-tdep.h
===================================================================
RCS file: /cvs/src/src/gdb/mips-linux-tdep.h,v
retrieving revision 1.13
diff -r1.13 mips-linux-tdep.h
107a108,152
> 
> /* MIPS Signals -- adapted from linux/arch/mips/include/asm/signal.h.  */
> 
> enum mips_signals 
>   {
>     MIPS_SIGHUP    =  1,	/* Hangup (POSIX).  */
>     MIPS_SIGINT    =  2,	/* Interrupt (ANSI).  */
>     MIPS_SIGQUIT   =  3,	/* Quit (POSIX).  */
>     MIPS_SIGILL    =  4,	/* Illegal instruction (ANSI).  */
>     MIPS_SIGTRAP   =  5,	/* Trace trap (POSIX).  */
>     MIPS_SIGIOT    =  6,	/* IOT trap (4.2 BSD).  */
>     MIPS_SIGABRT   =  MIPS_SIGIOT,	/* Abort (ANSI).  */
>     MIPS_SIGEMT    =  7,
>     MIPS_SIGFPE    =  8,	/* Floating-point exception (ANSI).  */
>     MIPS_SIGKILL   =  9,	/* Kill, unblockable (POSIX).  */
>     MIPS_SIGBUS    = 10,	/* BUS error (4.2 BSD).  */
>     MIPS_SIGSEGV   = 11,	/* Segmentation violation (ANSI).  */
>     MIPS_SIGSYS    = 12,
>     MIPS_SIGPIPE   = 13,	/* Broken pipe (POSIX).  */
>     MIPS_SIGALRM   = 14,	/* Alarm clock (POSIX).  */
>     MIPS_SIGTERM   = 15,	/* Termination (ANSI).  */
>     MIPS_SIGUSR1   = 16,	/* User-defined signal 1 (POSIX).  */
>     MIPS_SIGUSR2   = 17,	/* User-defined signal 2 (POSIX).  */
>     MIPS_SIGCHLD   = 18,	/* Child status has changed (POSIX).  */
>     MIPS_SIGCLD    = MIPS_SIGCHLD,	/* Same as SIGCHLD (System V).  */
>     MIPS_SIGPWR    = 19,	/* Power failure restart (System V).  */
>     MIPS_SIGWINCH  = 20,	/* Window size change (4.3 BSD, Sun).  */
>     MIPS_SIGURG    = 21,	/* Urgent condition on socket (4.2 BSD).  */
>     MIPS_SIGIO     = 22,	/* I/O now possible (4.2 BSD).  */
>     MIPS_SIGPOLL   = MIPS_SIGIO,/* Pollable event occurred (System V).  */
>     MIPS_SIGSTOP   = 23,	/* Stop, unblockable (POSIX).  */
>     MIPS_SIGTSTP   = 24,	/* Keyboard stop (POSIX).  */
>     MIPS_SIGCONT   = 25,	/* Continue (POSIX).  */
>     MIPS_SIGTTIN   = 26,	/* Background read from tty (POSIX).  */
>     MIPS_SIGTTOU   = 27,	/* Background write to tty (POSIX).  */
>     MIPS_SIGVTALRM = 28,	/* Virtual alarm clock (4.2 BSD).  */
>     MIPS_SIGPROF   = 29,	/* Profiling alarm clock (4.2 BSD).  */
>     MIPS_SIGXCPU   = 30,	/* CPU limit exceeded (4.2 BSD).  */
>     MIPS_SIGXFSZ   = 31,	/* File size limit exceeded (4.2 BSD).  */
>     MIPS_SIGRTMIN  = 32,	/* Minimum RT signal. */
>     MIPS_SIGRTMAX  = 128-1	/* Maximum RT signal. */
>   };
> 
> #define REALTIME_LO MIPS_SIGRTMIN
> #define REALTIME_HI MIPS_SIGRTMAX