FISTP

X87_ALU X87 x86_64

3 encoding forms.

XED_FISTP_X86_LEGACY_ONEBYTE_DB_104657
MEM0:w:mem32int REG0=XED_REG_ST0:r:IMPL:f80 REG1=XED_REG_X87POP:r:SUPP REG2=XED_REG_X87STATUS:w:SUPP
X86_LEGACY DB /3 X87
XED_FISTP_X86_LEGACY_ONEBYTE_DF_495287
MEM0:w:m64int REG0=XED_REG_ST0:r:IMPL:f80 REG1=XED_REG_X87POP:r:SUPP REG2=XED_REG_X87STATUS:w:SUPP
X86_LEGACY DF /7 X87
XED_FISTP_X86_LEGACY_ONEBYTE_DF_783883
MEM0:w:mem16int REG0=XED_REG_ST0:r:IMPL:f80 REG1=XED_REG_X87POP:r:SUPP REG2=XED_REG_X87STATUS:w:SUPP
X86_LEGACY DF /3 X87