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factor/vm/os-freebsd-x86.32.hpp

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Porting VM to C++
2009-05-02 05:04:19 -04:00
#include <ucontext.h>
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
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#include <machine/npx.h>
Porting VM to C++
2009-05-02 05:04:19 -04:00
Use C++ namespaces
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namespace factor
{
VM: use better abstractions for tagged pointers, eliminate get()/set() stuff, clean up array, string, and byte-array element access
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inline static void *ucontext_stack_pointer(void *uap)
Porting VM to C++
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{
ucontext_t *ucontext = (ucontext_t *)uap;
return (void *)ucontext->uc_mcontext.mc_esp;
}
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;
vm: fix indentation in Joe's changes
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if (ucontext->uc_mcontext.mc_fpformat == _MC_FPFMT_387)
{
struct save87 *x87 = (struct save87 *)(&ucontext->uc_mcontext.mc_fpstate);
return x87->sv_env.en_sw;
}
else if (ucontext->uc_mcontext.mc_fpformat == _MC_FPFMT_XMM)
{
struct savexmm *xmm = (struct savexmm *)(&ucontext->uc_mcontext.mc_fpstate);
return xmm->sv_env.en_sw | xmm->sv_env.en_mxcsr;
}
else
return 0;
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 void uap_clear_fpu_status(void *uap)
{
ucontext_t *ucontext = (ucontext_t *)uap;
more freebsd compilation fixes
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if (ucontext->uc_mcontext.mc_fpformat == _MC_FPFMT_387)
vm: fix indentation in Joe's changes
2009-09-14 04:09:03 -04:00
{
struct save87 *x87 = (struct save87 *)(&ucontext->uc_mcontext.mc_fpstate);
x87->sv_env.en_sw = 0;
}
more freebsd compilation fixes
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else if (ucontext->uc_mcontext.mc_fpformat == _MC_FPFMT_XMM)
vm: fix indentation in Joe's changes
2009-09-14 04:09:03 -04:00
{
struct savexmm *xmm = (struct savexmm *)(&ucontext->uc_mcontext.mc_fpstate);
xmm->sv_env.en_sw = 0;
xmm->sv_env.en_mxcsr &= 0xffffffc0;
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
}
}
Porting VM to C++
2009-05-02 05:04:19 -04:00
#define UAP_PROGRAM_COUNTER(ucontext) (((ucontext_t *)(ucontext))->uc_mcontext.mc_eip)
Use C++ namespaces
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}