mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
synced 2025-12-05 15:15:44 +00:00
a899cdd57d
Removed all uses and implementations of set_vector() function across ERC32, LEON2, and LEON3 BSPs. Replaced with rtems_interrupt_handler_install() and rtems_interrupt_entry_install(). - Added ERC32_Clear_and_unmask_interrupt() and LEON_Clear_and_unmask_interrupt() for unmasking logic previously in set_vector(). - Deleted set_vector() definitions and implementations in each BSP. - Updated related obj.yml files. - Replaced set_vector() with rtems_interrupt_catch() in shared/gnatcommon.c.
124 lines
3.1 KiB
C
124 lines
3.1 KiB
C
/*
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*
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* Support for gnat/rtems interrupts and exception handling.
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* Jiri Gaisler, ESA/ESTEC, 17-02-1999.
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*
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*/
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#include <unistd.h> /* getpid */
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#include <bsp.h>
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#include <rtems/bspIo.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <bsp/gnatcommon.h>
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/*
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* Synchronous trap handler. Map the trap number of SIGFPE, SIGSEGV
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* or SIGILL to generate the corresponding Ada exception.
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*/
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static rtems_isr __gnat_exception_handler(
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rtems_vector_number trap
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)
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{
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uint32_t real_trap;
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uint32_t signal;
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real_trap = SPARC_REAL_TRAP_NUMBER (trap);
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switch (real_trap)
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{
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case 0x08: /* FPU exception */
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case 0x0A: /* TAG overflow */
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case 0x82: /* divide by zero */
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signal = SIGFPE; /* Will cause Constraint_Error */
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break;
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case 0x01: /* Instruction access exception */
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case 0x09: /* Data access exception */
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signal = SIGSEGV; /* Will cause Storage_Error */
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break;
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default: /* Anything else ... */
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signal = SIGILL; /* Will cause Program_Error */
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break;
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}
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kill (getpid (), signal);
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}
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/*
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* Asynchronous trap handler. As it happens, the interrupt trap numbers for
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* SPARC is 17 - 31, so we just map then directly on the same signal number.
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*/
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static rtems_isr __gnat_interrupt_handler (
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rtems_vector_number trap
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)
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{
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uint32_t real_trap;
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real_trap = SPARC_REAL_TRAP_NUMBER (trap);
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kill (getpid (), real_trap);
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}
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/*
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* Default signal handler with error reporting
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*/
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static void __gnat_signals_Abnormal_termination_handler (
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int signo
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)
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{
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switch (signo)
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{
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case SIGFPE:
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printk("\nConstraint_Error\n");
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break;
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case SIGSEGV:
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printk("\nStorage_Error\n");
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break;
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default:
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printk("\nProgram_Error\n");
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break;
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}
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exit(1);
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}
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const struct sigaction __gnat_error_vector =
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{0, -1,
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{__gnat_signals_Abnormal_termination_handler}};
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void __gnat_install_handler_common (
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int t1, int t2
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)
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{
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uint32_t trap;
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rtems_isr_entry previous_isr_a;
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rtems_isr_entry previous_isr_b;
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sigaction (SIGSEGV, &__gnat_error_vector, NULL);
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sigaction (SIGFPE, &__gnat_error_vector, NULL);
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sigaction (SIGILL, &__gnat_error_vector, NULL);
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for (trap = 0; trap < 256; trap++)
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{
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/*
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* Skip window overflow, underflow, and flush as well as software
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* trap 0 which we will use as a shutdown. Also avoid trap 0x70 - 0x7f
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* which cannot happen and where some of the space is used to pass
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* parameters to the program. 0x80 for system traps and
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* 0x81 - 0x83 by the remote debugging stub.
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* Avoid two bsp specific interrupts which normally are used
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* by the real-time clock and UART B.
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*/
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if ((trap >= 0x11) && (trap <= 0x1f))
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{
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if ((trap != t1) && (trap != t2))
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{
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rtems_interrupt_catch (__gnat_interrupt_handler, trap, &previous_isr_a);
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}
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}
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else if ((trap != 5 && trap != 6) && ((trap < 0x70) || (trap > 0x83)))
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{
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rtems_interrupt_catch (__gnat_exception_handler, SPARC_SYNCHRONOUS_TRAP (trap), &previous_isr_b);
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SPARC_Clear_and_unmask_interrupt(SPARC_SYNCHRONOUS_TRAP (trap));
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}
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}
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}
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