mirror of https://github.com/proxmox/mirror_qemu
powerpc: correctly handle fpu exceptions.
Raise the exception on the first occurence, do not wait for the next floating point operation. Signed-off-by: Fabien Chouteau <chouteau@adacore.com> Signed-off-by: Alexander Graf <agraf@suse.de>master
parent
c4eda5b723
commit
db72c9f256
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@ -470,6 +470,18 @@ void store_fpscr(CPUPPCState *env, uint64_t arg, uint32_t mask)
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void helper_float_check_status(CPUPPCState *env)
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void helper_float_check_status(CPUPPCState *env)
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{
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{
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int status = get_float_exception_flags(&env->fp_status);
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if (status & float_flag_divbyzero) {
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float_zero_divide_excp(env);
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} else if (status & float_flag_overflow) {
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float_overflow_excp(env);
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} else if (status & float_flag_underflow) {
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float_underflow_excp(env);
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} else if (status & float_flag_inexact) {
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float_inexact_excp(env);
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}
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if (env->exception_index == POWERPC_EXCP_PROGRAM &&
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if (env->exception_index == POWERPC_EXCP_PROGRAM &&
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(env->error_code & POWERPC_EXCP_FP)) {
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(env->error_code & POWERPC_EXCP_FP)) {
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/* Differred floating-point exception after target FPR update */
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/* Differred floating-point exception after target FPR update */
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@ -477,17 +489,6 @@ void helper_float_check_status(CPUPPCState *env)
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helper_raise_exception_err(env, env->exception_index,
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helper_raise_exception_err(env, env->exception_index,
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env->error_code);
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env->error_code);
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}
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}
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} else {
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int status = get_float_exception_flags(&env->fp_status);
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if (status & float_flag_divbyzero) {
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float_zero_divide_excp(env);
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} else if (status & float_flag_overflow) {
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float_overflow_excp(env);
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} else if (status & float_flag_underflow) {
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float_underflow_excp(env);
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} else if (status & float_flag_inexact) {
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float_inexact_excp(env);
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}
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}
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}
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}
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}
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