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factor/vm/os-linux-x86.64.hpp

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Porting VM to C++
2009-05-02 05:04:19 -04:00
#include <ucontext.h>
Use C++ namespaces
2009-05-04 02:46:13 -04:00
namespace factor
{
VM: use better abstractions for tagged pointers, eliminate get()/set() stuff, clean up array, string, and byte-array element access
2009-05-04 02:00:30 -04:00
inline static void *ucontext_stack_pointer(void *uap)
Porting VM to C++
2009-05-02 05:04:19 -04:00
{
ucontext_t *ucontext = (ucontext_t *)uap;
return (void *)ucontext->uc_mcontext.gregs[15];
}
save the FP status out of the signal context and use it as part of the fp trap factor exception. clear the FP status before continuing after an exception
2009-09-14 00:37:28 -04:00
inline static unsigned int uap_fpu_status(void *uap)
{
ucontext_t *ucontext = (ucontext_t *)uap;
return ucontext->uc_mcontext.fpregs->swd
| ucontext->uc_mcontext.fpregs->mxcsr;
}
inline static void uap_clear_fpu_status(void *uap)
{
ucontext_t *ucontext = (ucontext_t *)uap;
ucontext->uc_mcontext.fpregs->swd = 0;
ucontext->uc_mcontext.fpregs->mxcsr &= 0xffffffc0;
}
Porting VM to C++
2009-05-02 05:04:19 -04:00
#define UAP_PROGRAM_COUNTER(ucontext) \
(((ucontext_t *)(ucontext))->uc_mcontext.gregs[16])
Use C++ namespaces
2009-05-04 02:46:13 -04:00
}