plf_stub.c

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//=============================================================================
//
//      plf_stub.c
//
//      Platform specific code for GDB stub support.
//
//=============================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
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//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   nickg, jskov (based on the old tx39 hal_stub.c)
// Contributors:nickg, jskov
// Date:        1999-02-12
// Purpose:     Platform specific code for GDB stub support.
//              
//####DESCRIPTIONEND####
//
//=============================================================================

#include <pkgconf/hal.h>

#ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS

#include <cyg/hal/hal_stub.h>

#include <cyg/hal/hal_io.h>             // HAL IO macros
#include <cyg/hal/hal_diag.h>           // diag output. FIXME

#include <cyg/hal/hal_intr.h>
#include <cyg/hal/hal_if.h>

//-----------------------------------------------------------------------------
// Stub init

void hal_plf_stub_init(void)
{
//    extern CYG_ADDRESS hal_virtual_vector_table[64];
    extern void init_thread_syscall( void *);
    extern void install_async_breakpoint(void *epc);
    void (*oldvsr)(void);
    extern void __default_exception_vsr(void);

    // Ensure that the breakpoint VSR points to the default VSR. This will pass
    // it on to the stubs.
    HAL_VSR_SET( CYGNUM_HAL_VECTOR_BREAKPOINT, __default_exception_vsr, &oldvsr );

    // Install async breakpoint handler into vector table.
    hal_virtual_vector_table[35] = (CYG_ADDRESS)install_async_breakpoint;

#if !defined(CYGPKG_KERNEL) && defined(CYGDBG_HAL_DEBUG_GDB_THREAD_SUPPORT)
    // Only include this code if we do not have a kernel. Otherwise
    // the kernel supplies the functionality for the app we are linked
    // with.

    // Prepare for application installation of thread info function in
    // vector table.
    hal_virtual_vector_table[15] = 0;
    init_thread_syscall( (void *)&hal_virtual_vector_table[15] );
#endif
}

#endif // ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
//-----------------------------------------------------------------------------
// End of plf_stub.c