swi.h

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/*
 *  Copied from libgloss 1 Oct 2009.
 *  Minor modifications to work with RTEMS.
 */

/* SWI numbers for RDP (Demon) monitor.  */
#define SWI_WriteC                 0x0
#define SWI_Write0                 0x2
#define SWI_ReadC                  0x4
#define SWI_CLI                    0x5
#define SWI_GetEnv                 0x10
#define SWI_Exit                   0x11
#define SWI_EnterOS                0x16

#define SWI_GetErrno               0x60
#define SWI_Clock                  0x61
#define SWI_Time                   0x63
#define SWI_Remove                 0x64
#define SWI_Rename                 0x65
#define SWI_Open                   0x66

#define SWI_Close                  0x68
#define SWI_Write                  0x69
#define SWI_Read                   0x6a
#define SWI_Seek                   0x6b
#define SWI_Flen                   0x6c

#define SWI_IsTTY                  0x6e
#define SWI_TmpNam                 0x6f
#define SWI_InstallHandler         0x70
#define SWI_GenerateError          0x71


/* Now the SWI numbers and reason codes for RDI (Angel) monitors.  */
#define AngelSWI_ARM            0x123456
#ifdef __thumb__
#define AngelSWI            0xAB
#else
#define AngelSWI            AngelSWI_ARM
#endif
/* For Thumb-2 code use the BKPT instruction instead of SWI.  */
#ifdef __thumb2__
#define AngelSWIInsn            "bkpt"
#define AngelSWIAsm         bkpt
#else
#define AngelSWIInsn            "swi"
#define AngelSWIAsm         swi
#endif

/* The reason codes:  */
#define AngelSWI_Reason_Open        0x01
#define AngelSWI_Reason_Close       0x02
#define AngelSWI_Reason_WriteC      0x03
#define AngelSWI_Reason_Write0      0x04
#define AngelSWI_Reason_Write       0x05
#define AngelSWI_Reason_Read        0x06
#define AngelSWI_Reason_ReadC       0x07
#define AngelSWI_Reason_IsTTY       0x09
#define AngelSWI_Reason_Seek        0x0A
#define AngelSWI_Reason_FLen        0x0C
#define AngelSWI_Reason_TmpNam      0x0D
#define AngelSWI_Reason_Remove      0x0E
#define AngelSWI_Reason_Rename      0x0F
#define AngelSWI_Reason_Clock       0x10
#define AngelSWI_Reason_Time        0x11
#define AngelSWI_Reason_System      0x12
#define AngelSWI_Reason_Errno       0x13
#define AngelSWI_Reason_GetCmdLine  0x15
#define AngelSWI_Reason_HeapInfo    0x16
#define AngelSWI_Reason_EnterSVC    0x17
#define AngelSWI_Reason_ReportException 0x18
#define ADP_Stopped_ApplicationExit     ((2 << 16) + 38)
#define ADP_Stopped_RunTimeError    ((2 << 16) + 35)

#if defined(ARM_RDI_MONITOR) && !defined(__ASSEMBLER__)

static inline int
do_AngelSWI (int reason, void * arg)
{
  int value;
  __asm__ volatile ("mov r0, %1; mov r1, %2; " AngelSWIInsn " %a3; mov %0, r0"
       : "=r" (value) /* Outputs */
       : "r" (reason), "r" (arg), "i" (AngelSWI) /* Inputs */
       : "r0", "r1", "r2", "r3", "ip", "lr", "memory", "cc"
        /* Clobbers r0 and r1, and lr if in supervisor mode */);
                /* Accordingly to page 13-77 of ARM DUI 0040D other registers
                   can also be clobbered.  Some memory positions may also be
                   changed by a system call, so they should not be kept in
                   registers. Note: we are assuming the manual is right and
                   Angel is respecting the APCS.  */
  return value;
}

#endif