RTOS/rtems
1
0
Fork 0
forked from Imagelibrary/rtems
Code Pull Requests Activity

Patch from Jiri Gaisler <jgais@ws.estec.esa.nl> to fix remote gdb use:

Browse Source 
I just released erc32ccs-2.0.6 which includes some fixes and the
    Ada-self optimisation. Remote debugging of Ada programs did not
    work due to a conflict between monior and rtems trap handlers.
    I have attached a modified gnatsupp.c that makes remote debugging
    possible again.
This commit is contained in:
Joel Sherrill
1999-08-06 16:00:32 +00:00
parent a92280e02d
commit f42fb02e1d
1 changed files with 68 additions and 62 deletions
Download Patch File Download Diff File Expand all files Collapse all files

46
c/src/lib/libbsp/sparc/erc32/gnatsupp/gnatsupp.c
View File

@@ -1,6 +1,6 @@
/* /*
* *
* Support for gnat/rtems machine error exception handling. * Support for gnat/rtems interrupts and exception handling.
* Jiri Gaisler, ESA/ESTEC, 17-02-1999. * Jiri Gaisler, ESA/ESTEC, 17-02-1999.
* *
*/ */
@@ -20,7 +20,8 @@ rtems_isr __gnat_exception_handler
rtems_unsigned32 signal; rtems_unsigned32 signal;
real_trap = SPARC_REAL_TRAP_NUMBER (trap); real_trap = SPARC_REAL_TRAP_NUMBER (trap);
switch (real_trap) { switch (real_trap)
{
case 0x08: /* FPU exception */ case 0x08: /* FPU exception */
case 0x0A: /* TAG overflow */ case 0x0A: /* TAG overflow */
case 0x82: /* divide by zero */ case 0x82: /* divide by zero */
@@ -39,7 +40,7 @@ rtems_isr __gnat_exception_handler
/* /*
* Asynchronous trap handler. As it happens, the interrupt trap numbers for * Asynchronous trap handler. As it happens, the interrupt trap numbers for
* SPARC is 17 - 31, so we just map then directly on the same signal. * SPARC is 17 - 31, so we just map then directly on the same signal number.
*/ */
rtems_isr __gnat_interrupt_handler rtems_isr __gnat_interrupt_handler
@@ -57,9 +58,11 @@ rtems_isr __gnat_interrupt_handler
* Default signal handler with error reporting * Default signal handler with error reporting
*/ */
void __gnat_signals_Abormal_termination_handler( int signo ) void
__gnat_signals_Abormal_termination_handler (int signo)
{
switch (signo)
{ {
switch ( signo ) {
case SIGFPE: case SIGFPE:
DEBUG_puts ("\nConstraint_Error\n"); DEBUG_puts ("\nConstraint_Error\n");
break; break;
@@ -73,10 +76,12 @@ void __gnat_signals_Abormal_termination_handler( int signo )
exit (1); exit (1);
} }
const struct sigaction __gnat_error_vector = { const struct sigaction __gnat_error_vector =
0, -1, {__gnat_signals_Abormal_termination_handler}}; {0, -1,
{__gnat_signals_Abormal_termination_handler}};
void __gnat_install_handler() void
__gnat_install_handler ()
{ {
rtems_unsigned32 trap; rtems_unsigned32 trap;
rtems_isr_entry previous_isr; rtems_isr_entry previous_isr;
@@ -85,24 +90,25 @@ void __gnat_install_handler()
sigaction (SIGFPE, &__gnat_error_vector, NULL); sigaction (SIGFPE, &__gnat_error_vector, NULL);
sigaction (SIGILL, &__gnat_error_vector, NULL); sigaction (SIGILL, &__gnat_error_vector, NULL);
for ( trap=0 ; trap<256 ; trap++ ) { for (trap = 0; trap < 256; trap++)
{
/* /*
* Skip window overflow, underflow, and flush as well as software * Skip window overflow, underflow, and flush as well as software
* trap 0 which we will use as a shutdown. Also avoid trap 0x70 - 0x7f * trap 0 which we will use as a shutdown. Also avoid trap 0x70 - 0x7f
* which cannot happen and where some of the space is used to pass * which cannot happen and where some of the space is used to pass
* paramaters to the program. Trap 0x1d is used by the clock tick * paramaters to the program. Trap 0x1d is used by the clock tick,
* and 0x83 by the remote debugging stub. Traps 0x14, 0x15, and 0x17 * 0x80 for system traps and 0x81 - 0x83 by the remote debugging stub.
* are used by the console device driver. * Avoid 0x15 (UART B interrupt) which is also used by the stub
* to generate a 'break-in' interrupt.
*/ */
if (( trap >= 0x11 ) && ( trap <= 0x1f )) { if ((trap >= 0x11) && (trap <= 0x1f))
if ( trap != 0x1d && trap != 0x14 && trap != 0x15 && trap != 0x17 ) {
rtems_interrupt_catch( __gnat_interrupt_handler, if ((trap != 0x1d) && (trap != 0x15))
trap, &previous_isr ); rtems_interrupt_catch (__gnat_interrupt_handler, trap, &previous_isr);
} else if (( trap != 5 && trap != 6 && trap != 0x83 ) && }
(( trap < 0x70 ) || ( trap > 0x80 ))) else if ((trap != 5 && trap != 6) && ((trap < 0x70) || (trap > 0x83)))
set_vector( __gnat_exception_handler, set_vector (__gnat_exception_handler, SPARC_SYNCHRONOUS_TRAP (trap), 1);
SPARC_SYNCHRONOUS_TRAP( trap ), 1 );
} }
} }