Merge tag 's390x-tcg-2019-06-07' into s390-next-staging

Finalize implementation of the "Vector Facility" for s390x TCG. Add it
to the QEMU CPU model, so it is enabled as default.
Also:
- One fix (and one workaround) for the STFLE instruction
- Fix the alignment of vector registers (and change the data type)
- Properly generate ELF_HWCAP for s390x for linux-user
- Use a gvec helper for VECTOR SELECT

# gpg: Signature made Fri 07 Jun 2019 02:58:01 PM CEST
# gpg:                using RSA key 1BD9CAAD735C4C3A460DFCCA4DDE10F700FF835A
# gpg:                issuer "david@redhat.com"
# gpg: Good signature from "David Hildenbrand <david@redhat.com>" [full]
# gpg:                 aka "David Hildenbrand <davidhildenbrand@gmail.com>" [full]

* tag 's390x-tcg-2019-06-07': (33 commits)
  linux-user: elf: ELF_HWCAP for s390x
  s390x/tcg: Use tcg_gen_gvec_bitsel for VECTOR SELECT
  s390x: Bump the "qemu" CPU model up to a stripped-down z13
  s390x/tcg: We support the Vector Facility
  s390x/tcg: Allow linux-user to use vector instructions
  s390x/tcg: Implement VECTOR FP TEST DATA CLASS IMMEDIATE
  s390x/tcg: Implement VECTOR FP SUBTRACT
  s390x/tcg: Implement VECTOR FP SQUARE ROOT
  s390x/tcg: Implement VECTOR FP PERFORM SIGN OPERATION
  s390x/tcg: Implement VECTOR FP MULTIPLY AND (ADD|SUBTRACT)
  s390x/tcg: Implement VECTOR FP MULTIPLY
  s390x/tcg: Implement VECTOR LOAD ROUNDED
  s390x/tcg: Implement VECTOR LOAD LENGTHENED
  s390x/tcg: Implement VECTOR LOAD FP INTEGER
  s390x/tcg: Implement VECTOR FP DIVIDE
  s390x/tcg: Implement VECTOR FP CONVERT TO LOGICAL 64-BIT
  s390x/tcg: Implement VECTOR FP CONVERT TO FIXED 64-BIT
  s390x/tcg: Implement VECTOR FP CONVERT FROM LOGICAL 64-BIT
  s390x/tcg: Implement VECTOR FP CONVERT FROM FIXED 64-BIT
  s390x/tcg: Implement VECTOR FP COMPARE (EQUAL|HIGH|HIGH OR EQUAL)
  ...

Signed-off-by: Cornelia Huck <cohuck@redhat.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index a57b7049dd..5451d262ec 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -1308,6 +1308,34 @@ static inline void init_thread(struct target_pt_regs *regs,
 #define ELF_DATA	ELFDATA2MSB
 #define ELF_ARCH	EM_S390
 
+#include "elf.h"
+
+#define ELF_HWCAP get_elf_hwcap()
+
+#define GET_FEATURE(_feat, _hwcap) \
+    do { if (s390_has_feat(_feat)) { hwcap |= _hwcap; } } while (0)
+
+static uint32_t get_elf_hwcap(void)
+{
+    /*
+     * Let's assume we always have esan3 and zarch.
+     * 31-bit processes can use 64-bit registers (high gprs).
+     */
+    uint32_t hwcap = HWCAP_S390_ESAN3 | HWCAP_S390_ZARCH | HWCAP_S390_HIGH_GPRS;
+
+    GET_FEATURE(S390_FEAT_STFLE, HWCAP_S390_STFLE);
+    GET_FEATURE(S390_FEAT_MSA, HWCAP_S390_MSA);
+    GET_FEATURE(S390_FEAT_LONG_DISPLACEMENT, HWCAP_S390_LDISP);
+    GET_FEATURE(S390_FEAT_EXTENDED_IMMEDIATE, HWCAP_S390_EIMM);
+    if (s390_has_feat(S390_FEAT_EXTENDED_TRANSLATION_3) &&
+        s390_has_feat(S390_FEAT_ETF3_ENH)) {
+        hwcap |= HWCAP_S390_ETF3EH;
+    }
+    GET_FEATURE(S390_FEAT_VECTOR, HWCAP_S390_VXRS);
+
+    return hwcap;
+}
+
 static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
 {
     regs->psw.addr = infop->entry;