#include <stdio.h>
#include <sys/param.h>
#include <sys/file.h>
+#include "sbcl.h"
#include "./signal.h"
#include "os.h"
#include "arch.h"
#include "interrupt.h"
#include "interr.h"
#include "lispregs.h"
-#include "sbcl.h"
#include <sys/socket.h>
#include <sys/utsname.h>
#include <unistd.h>
#include "validate.h"
+#include "ppc-linux-mcontext.h"
+
size_t os_vm_page_size;
+int arch_os_thread_init(struct thread *thread) {
+ return 1; /* success */
+}
+int arch_os_thread_cleanup(struct thread *thread) {
+ return 1; /* success */
+}
+
os_context_register_t *
os_context_register_addr(os_context_t *context, int offset)
{
+#if defined(GLIBC231_STYLE_UCONTEXT)
return &((context->uc_mcontext.regs)->gpr[offset]);
+#elif defined(GLIBC232_STYLE_UCONTEXT)
+ return &((context->uc_mcontext.uc_regs->gregs)[offset]);
+#endif
}
os_context_register_t *
os_context_pc_addr(os_context_t *context)
{
+#if defined(GLIBC231_STYLE_UCONTEXT)
return &((context->uc_mcontext.regs)->nip);
+#elif defined(GLIBC232_STYLE_UCONTEXT)
+ return &((context->uc_mcontext.uc_regs->gregs)[PT_NIP]);
+#endif
}
os_context_register_t *
os_context_lr_addr(os_context_t *context)
{
+#if defined(GLIBC231_STYLE_UCONTEXT)
return &((context->uc_mcontext.regs)->link);
+#elif defined(GLIBC232_STYLE_UCONTEXT)
+ return &((context->uc_mcontext.uc_regs->gregs)[PT_LNK]);
+#endif
}
sigset_t *
os_context_sigmask_addr(os_context_t *context)
{
+#if defined(GLIBC231_STYLE_UCONTEXT)
+ return &context->uc_sigmask;
+#elif defined(GLIBC232_STYLE_UCONTEXT)
return &context->uc_sigmask;
+#endif
}
unsigned long
registers, and PT_FPSCR is an offset that is larger than 32
(the number of ppc registers), but that happens to get the
right answer. -- CSR, 2002-07-11 */
+#if defined(GLIBC231_STYLE_UCONTEXT)
return context->uc_mcontext.regs->gpr[PT_FPSCR];
+#elif defined(GLIBC232_STYLE_UCONTEXT)
+ return context->uc_mcontext.uc_regs->gregs[PT_FPSCR];
+#endif
}
void
os_restore_fp_control(os_context_t *context)
{
unsigned long control;
+ double d;
control = os_context_fp_control(context) &
- /* FIXME: Should we preserve the user's requested rounding mode?
+ /* FIXME: Should we preserve the user's requested rounding mode?
- Note that doing
+ Note that doing
+
+ ~(FLOAT_STICKY_BITS_MASK | FLOAT_EXCEPTIONS_BYTE_MASK)
+
+ here leads to infinite SIGFPE for invalid operations, as
+ there are bits in the control register that need to be
+ cleared that are let through by that mask. -- CSR, 2002-07-16 */
- ~(FLOAT_STICKY_BITS_MASK | FLOAT_EXCEPTIONS_BYTE_MASK)
-
- here leads to infinite SIGFPE for invalid operations, as
- there are bits in the control register that need to be
- cleared that are let through by that mask. -- CSR, 2002-07-16 */
- FLOAT_TRAPS_BYTE_MASK;
+ FLOAT_TRAPS_BYTE_MASK;
- /* FIXME: Shoot me now.
+ d = *((double *) &control);
+ /* Hmp. Apparently the following doesn't work either:
- Hardcoded nastiness: the "0"s below refer to the first floating
- point registers -- we should let gcc deal with that. The 8(31)
- refers to the position on the stack, less one, of control (we
- need for control to be the high word of the double loaded by
- lfd; how do I know that r31 contains the stack? I don't, I'm
- just guessing. The 255, on the other hand, is a valid constant
- -- it says "move everything in the upper word into the floating
- point control register. -- CSR, 2002-07-16 */
- asm ("stw %0, 12(31); lfd 0, 8(31); mtfsf 255, 0" : : "r" (control) : "r31");
+ asm volatile ("mtfsf 0xff,%0" : : "f" (d));
+
+ causing segfaults at the first GC.
+ */
}
void