From: Tom Musta <[email protected]> The various VSX Convert to Integer instructions should truncate the floating point number to an integer value, which is equivalent to a round-to-zero rounding mode. The existing VSX floating point to integer conversion helpers are erroneously using the rounding mode set int the PowerPC Floating Point Status and Control Register (FPSCR). This change corrects this defect by using the appropriate float*_to_*_round_to_zero() routines fro the softfloat library.
Signed-off-by: Tom Musta <[email protected]> Tested-by: Tom Musta <[email protected]> Signed-off-by: Alexander Graf <[email protected]> --- target-ppc/fpu_helper.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/target-ppc/fpu_helper.c b/target-ppc/fpu_helper.c index fd91239..691d572 100644 --- a/target-ppc/fpu_helper.c +++ b/target-ppc/fpu_helper.c @@ -2568,7 +2568,8 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \ fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXCVI, 0); \ xt.tfld = rnan; \ } else { \ - xt.tfld = stp##_to_##ttp(xb.sfld, &env->fp_status); \ + xt.tfld = stp##_to_##ttp##_round_to_zero(xb.sfld, \ + &env->fp_status); \ if (env->fp_status.float_exception_flags & float_flag_invalid) { \ fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXCVI, 0); \ } \ -- 1.8.1.4
