@@ -215,6 +215,7 @@ extern const struct VMStateDescription vmstate_s390_cpu;
#define PGM_SPECIAL_OP 0x0013
#define PGM_OPERAND 0x0015
#define PGM_TRACE_TABLE 0x0016
+#define PGM_VECTOR_PROCESSING 0x001b
#define PGM_SPACE_SWITCH 0x001c
#define PGM_HFP_SQRT 0x001d
#define PGM_PC_TRANS_SPEC 0x001f
@@ -62,6 +62,21 @@ void QEMU_NORETURN tcg_s390_data_exception(CPUS390XState *env, uint32_t dxc,
tcg_s390_program_interrupt(env, PGM_DATA, ILEN_AUTO, ra);
}
+void QEMU_NORETURN tcg_s390_vector_exception(CPUS390XState *env, uint32_t vxc,
+ uintptr_t ra)
+{
+ g_assert(vxc <= 0xff);
+#if !defined(CONFIG_USER_ONLY)
+ /* Always store the VXC into the lowcore, without AFP it is undefined */
+ stl_phys(CPU(s390_env_get_cpu(env))->as,
+ env->psa + offsetof(LowCore, data_exc_code), vxc);
+#endif
+
+ /* Always store the VXC into the FPC, without AFP it is undefined */
+ env->fpc = deposit32(env->fpc, 8, 8, vxc);
+ tcg_s390_program_interrupt(env, PGM_VECTOR_PROCESSING, ILEN_AUTO, ra);
+}
+
void HELPER(data_exception)(CPUS390XState *env, uint32_t dxc)
{
tcg_s390_data_exception(env, dxc, GETPC());
@@ -18,5 +18,7 @@ void QEMU_NORETURN tcg_s390_program_interrupt(CPUS390XState *env, uint32_t code,
int ilen, uintptr_t ra);
void QEMU_NORETURN tcg_s390_data_exception(CPUS390XState *env, uint32_t dxc,
uintptr_t ra);
+void QEMU_NORETURN tcg_s390_vector_exception(CPUS390XState *env, uint32_t vxc,
+ uintptr_t ra);
#endif /* TCG_S390X_H */
Handling is similar to data exceptions, however we can always store the VXC into the lowore and the FPC: z14 PoP, 6-20, "Vector-Exception Code" When a vector-processing exception causes a pro- gram interruption, a vector-exception code (VXC) is stored at location 147, and zeros are stored at loca- tions 144-146. The VXC is also placed in the DXC field of the floating-point-control (FPC) register if bit 45 of control register 0 is one. When bit 45 of control register 0 is zero and bit 46 of control register 0 is one, the DXC field of the FPC register and the con- tents of storage at location 147 are unpredictable. Signed-off-by: David Hildenbrand <david@redhat.com> --- target/s390x/cpu.h | 1 + target/s390x/excp_helper.c | 15 +++++++++++++++ target/s390x/tcg_s390x.h | 2 ++ 3 files changed, 18 insertions(+)