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Code Issues Releases Activity

UC_MCONTEXT_FPREGS_PTR is made optional

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This commit is contained in:
Alexander Esilevich 2010-07-30 22:22:49 +07:00
parent 42a6f57c19
commit ee32be6651
2 changed files with 7 additions and 0 deletions
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2
src/x86_64/getcontext.S
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@ -58,7 +58,9 @@ _Ux86_64_getcontext:
/* Save fp state (not needed, except for setcontext not
restoring garbage). */
leaq UC_MCONTEXT_FPREGS_MEM(%rdi),%r8
#ifdef UC_MCONTEXT_FPREGS_PTR
movq %r8, UC_MCONTEXT_FPREGS_PTR(%rdi)
#endif // UC_MCONTEXT_FPREGS_PTR
fnstenv (%r8)
stmxcsr FPREGS_OFFSET_MXCSR(%r8)

5
src/x86_64/setcontext.S
View file

@ -37,7 +37,12 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
_Ux86_64_setcontext:
/* restore fp state */
// TODO: why not just use leaq?
#ifdef UC_MCONTEXT_FPREGS_PTR
mov UC_MCONTEXT_FPREGS_PTR(%rdi),%r8
#else // UC_MCONTEXT_FPREGS_PTR
leaq UC_MCONTEXT_FPREGS_MEM(%rdi),%r8
#endif // UC_MCONTEXT_FPREGS_PTR
fldenv (%r8)
ldmxcsr FPREGS_OFFSET_MXCSR(%r8)