os_context_register_t *
os_context_register_addr(os_context_t *context, int offset)
{
- return &(((struct sigcontext *)&(context->uc_mcontext))->sc_regs[offset]);
+ mcontext_t *mctx = &context->uc_mcontext;
+ struct sigcontext *ctx = (struct sigcontext *)mctx;
+ return &ctx->sc_regs[offset];
}
os_context_register_t *
os_context_fpregister_addr(os_context_t *context, int offset)
{
- return &(((struct sigcontext *)&(context->uc_mcontext))->sc_fpregs[offset]);
+ mcontext_t *mctx = &context->uc_mcontext;
+ struct sigcontext *ctx = (struct sigcontext *)mctx;
+ return &ctx->sc_fpregs[offset];
}
os_context_register_t *
os_context_pc_addr(os_context_t *context)
{
/* Why do I get all the silly ports? -- CSR, 2002-08-11 */
- return &(((struct sigcontext *)&(context->uc_mcontext))->sc_pc);
+ mcontext_t *mctx = &context->uc_mcontext;
+ struct sigcontext *ctx = (struct sigcontext *)mctx;
+ return &ctx->sc_pc;
}
sigset_t *
unsigned int
os_context_fp_control(os_context_t *context)
{
- /* FIXME: Probably do something. */
- return 0;
+ mcontext_t *mctx = &context->uc_mcontext;
+ struct sigcontext *ctx = (struct sigcontext *)mctx;
+ return ctx->sc_fpc_csr;
}
void
os_restore_fp_control(os_context_t *context)
{
- /* FIXME: Probably do something. */
+ unsigned int ctl = os_context_fp_control(context);
+ ctl &= ~(FLOAT_STICKY_BITS_MASK | FLOAT_EXCEPTIONS_BYTE_MASK);
+ arch_set_fp_control(ctl);
}
unsigned int