Files
linux-kernel-module-cheat/userland/arch/x86_64/fscale.S
2019-06-22 00:00:01 +00:00

35 lines
595 B
ArmAsm

/* https://github.com/cirosantilli/linux-kernel-module-cheat#x86-x87-fpu-instructions */
#include <lkmc.h>
.data
double_1_0: .double 1.0
double_2_5: .double 2.5
double_4_0: .double 4.0
LKMC_PROLOGUE
fldl double_4_0
# ST0 = 4.0
fldl double_2_5
# ST0 = 2.5
# ST1 = 4.0
fldl double_1_0
# ST0 = 1.0
# ST1 = 2.5
# ST2 = 4.0
# ST0 = 1 * 2 ^ (RoundTowardZero(2.5))
# = 1 * 2 ^ 2
# = 4
fscale
# ST0 = 4.0
# ST1 = 2.5
# ST2 = 4.0
fcomip %st(2)
# ST0 = 4.0
# ST1 = 2.5
LKMC_ASSERT(je)
LKMC_EPILOGUE