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#include "arm.h"
#include <_ansi.h>
/* 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. */
#if defined (SEMIHOST_V2) \
&& defined (SEMIHOST_V2_MIXED_MODE) \
&& !defined (THUMB_VXM)
#define AngelSWI_ARM 0xE10F0070 /* HLT #0xF000 A32. */
#ifdef __thumb__
#define AngelSWI 0xBABC /* HLT #0x3c T32. */
#else /* __thumb__. */
#define AngelSWI AngelSWI_ARM
#endif /* __thumb__. */
#else /* SEMIHOST_V2. */
#define AngelSWI_ARM 0x123456 /* SVC A32. */
#ifdef __thumb__
#define AngelSWI 0xAB /* SVC T32. */
#else /* __thumb__. */
#define AngelSWI AngelSWI_ARM
#endif /* __thumb__. */
#endif /* SEMIHOST_V2. */
/* For thumb only architectures use the BKPT instruction instead of SWI. */
#ifdef THUMB_VXM
#define AngelSWIInsn "bkpt"
#define AngelSWIAsm(IMM) bkpt IMM
#elif defined (SEMIHOST_V2) && defined (SEMIHOST_V2_MIXED_MODE)
/* This is actually encoding the HLT instruction, however we don't have
support for this in older assemblers. So we have to encode the
instruction manually. */
#define AngelSWIInsn ".inst"
#define AngelSWIAsm(IMM) .inst IMM
#else
#define AngelSWIInsn "swi"
#define AngelSWIAsm(IMM) swi IMM
#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_IsError 0x08
#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 AngelSWI_Reason_ReportExceptionExtended 0x20
#define AngelSWI_Reason_Elapsed 0x30
#define AngelSWI_Reason_TickFreq 0x31
#define ADP_Stopped_ApplicationExit ((2 << 16) + 38)
#define ADP_Stopped_RunTimeError ((2 << 16) + 35)
/* Semihosting feature magic numbers. */
#define NUM_SHFB_MAGIC 4
#define SHFB_MAGIC_0 0x53
#define SHFB_MAGIC_1 0x48
#define SHFB_MAGIC_2 0x46
#define SHFB_MAGIC_3 0x42
/* Semihosting extensions. */
#define SH_EXT_EXIT_EXTENDED_BITNUM 0x0
#define SH_EXT_STDOUT_STDERR_BITNUM 0x1
#if !defined (__ASSEMBLER__)
extern int _get_semihosting_exts (char*, int, int);
extern int _has_ext_exit_extended (void);
extern int _has_ext_stdout_stderr (void);
#endif
#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
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