com.tapina.robe.swi
Class SharedCLibrary

java.lang.Object
  com.tapina.robe.runtime.Block
      com.tapina.robe.runtime.DataBlock
          com.tapina.robe.module.Module
              com.tapina.robe.swi.SWIHandler
                  com.tapina.robe.swi.SharedCLibrary

public class SharedCLibrary

extends SWIHandler

Floating point emulator SWIs. Currently there are no floating point instructions available.

Field Summary

static int

FILE_DESCRIPTOR_SIZE

Fields inherited from class com.tapina.robe.swi.SWIHandler

log, METHOD_PARAMETERS

Method Summary

static int	getBase()
static SharedCLibrary	getInstance()
static java.lang.reflect.Method	getMethod(java.lang.Integer offset)
void	LibInitAPCS_32(Environment env)
void	LibInitAPCS_R(Environment env) Initialise the Shared C Library stubs.
Stub[]	libInitAPCS_R(int chunkId)

Methods inherited from class com.tapina.robe.module.Module

getBytes, getHelp, getName, getSize, setSize

Methods inherited from class com.tapina.robe.runtime.Block

getAddress, setAddress

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

FILE_DESCRIPTOR_SIZE

public static final int FILE_DESCRIPTOR_SIZE

See Also:

Constant Field Values

Method Detail

getInstance

public static SharedCLibrary getInstance()

getBase

public static int getBase()

getMethod

public static java.lang.reflect.Method getMethod(java.lang.Integer offset)
                                          throws java.lang.NoSuchMethodException

Throws:

java.lang.NoSuchMethodException

LibInitAPCS_R

public void LibInitAPCS_R(Environment env)

Initialise the Shared C Library stubs.

Parameters:

env - IN: R0 points to list of stub chunks; OUT: R0 = R2, R2 = R1 + (R6 >> 16), R6 = 6

  0: Chunk ID (0 = kernel, 1 = C library, -1 = end of list)
  4: Pointer to start of stub list
  8: Pointer to end of stub list
  12: Pointer to workspace for statics (C library only)
  16: reserved
 

The static workspace contains:

  0x000: errno
  0x004: stdin
  0x02c: stdout
  0x054: stderr
  0x290: ctype
 

A RISC OS file record looks like:

 {
  WORD __ptr;
  WORD __icnt;
  WORD __ocnt;
  WORD __flag;
  WORD __base;
  WORD __file;
  WORD __pos;
  WORD __bufsiz;
  WORD __signature;
  FILE *real;
 }
 

The stub list is a set of instructions which implement the desired function.

LibInitAPCS_32

public final void LibInitAPCS_32(Environment env)

libInitAPCS_R

public Stub[] libInitAPCS_R(int chunkId)