Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-4.2-20191024' into staging

ppc patch queue 2019-10-24

Last pull request before soft freeze.
  * Lots of fixes and cleanups for spapr interrupt controllers
  * More SLOF updates to fix problems with full FDT rendering at CAS
    time (alas, more yet are to come)
  * A few other assorted changes

This isn't quite as well tested as I usually try to do before a pull
request.  But I've been sick and running into some other difficulties,
and wanted to get this sent out before heading towards KVM forum.

# gpg: Signature made Thu 24 Oct 2019 09:14:31 BST
# gpg:                using RSA key 75F46586AE61A66CC44E87DC6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>" [full]
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>" [full]
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>" [full]
# gpg:                 aka "David Gibson (kernel.org) <dwg@kernel.org>" [unknown]
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-4.2-20191024: (28 commits)
  spapr/xive: Set the OS CAM line at reset
  ppc/pnv: Fix naming of routines realizing the CPUs
  ppc: Reset the interrupt presenter from the CPU reset handler
  ppc/pnv: Add a PnvChip pointer to PnvCore
  ppc/pnv: Introduce a PnvCore reset handler
  spapr_cpu_core: Implement DeviceClass::reset
  spapr: move CPU reset after presenter creation
  spapr: Don't request to unplug the same core twice
  pseries: Update SLOF firmware image
  spapr: Move SpaprIrq::nr_xirqs to SpaprMachineClass
  spapr: Remove SpaprIrq::nr_msis
  spapr, xics, xive: Move SpaprIrq::post_load hook to backends
  spapr, xics, xive: Move SpaprIrq::reset hook logic into activate/deactivate
  spapr: Remove SpaprIrq::init_kvm hook
  spapr, xics, xive: Match signatures for XICS and XIVE KVM connect routines
  spapr, xics, xive: Move dt_populate from SpaprIrq to SpaprInterruptController
  spapr, xics, xive: Move print_info from SpaprIrq to SpaprInterruptController
  spapr, xics, xive: Move set_irq from SpaprIrq to SpaprInterruptController
  spapr: Formalize notion of active interrupt controller
  spapr, xics, xive: Move irq claim and free from SpaprIrq to SpaprInterruptController
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 40 insertions, 44 deletions

diff --git a/target/ppc/translate/vmx-impl.inc.c b/target/ppc/translate/vmx-impl.inc.c
index 2472a5217a..81d5a7a341 100644
--- a/target/ppc/translate/vmx-impl.inc.c
+++ b/target/ppc/translate/vmx-impl.inc.c
@@ -590,40 +590,38 @@ static void trans_vsl(DisasContext *ctx)
     int VT = rD(ctx->opcode);
     int VA = rA(ctx->opcode);
     int VB = rB(ctx->opcode);
-    TCGv_i64 avrA = tcg_temp_new_i64();
-    TCGv_i64 avrB = tcg_temp_new_i64();
+    TCGv_i64 avr = tcg_temp_new_i64();
     TCGv_i64 sh = tcg_temp_new_i64();
-    TCGv_i64 shifted = tcg_temp_new_i64();
+    TCGv_i64 carry = tcg_temp_new_i64();
     TCGv_i64 tmp = tcg_temp_new_i64();
 
-    /* Place bits 125-127 of vB in sh. */
-    get_avr64(avrB, VB, false);
-    tcg_gen_andi_i64(sh, avrB, 0x07ULL);
+    /* Place bits 125-127 of vB in 'sh'. */
+    get_avr64(avr, VB, false);
+    tcg_gen_andi_i64(sh, avr, 0x07ULL);
 
     /*
-     * Save highest sh bits of lower doubleword element of vA in variable
-     * shifted and perform shift on lower doubleword.
+     * Save highest 'sh' bits of lower doubleword element of vA in variable
+     * 'carry' and perform shift on lower doubleword.
      */
-    get_avr64(avrA, VA, false);
-    tcg_gen_subfi_i64(tmp, 64, sh);
-    tcg_gen_shr_i64(shifted, avrA, tmp);
-    tcg_gen_andi_i64(shifted, shifted, 0x7fULL);
-    tcg_gen_shl_i64(avrA, avrA, sh);
-    set_avr64(VT, avrA, false);
+    get_avr64(avr, VA, false);
+    tcg_gen_subfi_i64(tmp, 32, sh);
+    tcg_gen_shri_i64(carry, avr, 32);
+    tcg_gen_shr_i64(carry, carry, tmp);
+    tcg_gen_shl_i64(avr, avr, sh);
+    set_avr64(VT, avr, false);
 
     /*
      * Perform shift on higher doubleword element of vA and replace lowest
-     * sh bits with shifted.
+     * 'sh' bits with 'carry'.
      */
-    get_avr64(avrA, VA, true);
-    tcg_gen_shl_i64(avrA, avrA, sh);
-    tcg_gen_or_i64(avrA, avrA, shifted);
-    set_avr64(VT, avrA, true);
+    get_avr64(avr, VA, true);
+    tcg_gen_shl_i64(avr, avr, sh);
+    tcg_gen_or_i64(avr, avr, carry);
+    set_avr64(VT, avr, true);
 
-    tcg_temp_free_i64(avrA);
-    tcg_temp_free_i64(avrB);
+    tcg_temp_free_i64(avr);
     tcg_temp_free_i64(sh);
-    tcg_temp_free_i64(shifted);
+    tcg_temp_free_i64(carry);
     tcg_temp_free_i64(tmp);
 }
 
@@ -639,39 +637,37 @@ static void trans_vsr(DisasContext *ctx)
     int VT = rD(ctx->opcode);
     int VA = rA(ctx->opcode);
     int VB = rB(ctx->opcode);
-    TCGv_i64 avrA = tcg_temp_new_i64();
-    TCGv_i64 avrB = tcg_temp_new_i64();
+    TCGv_i64 avr = tcg_temp_new_i64();
     TCGv_i64 sh = tcg_temp_new_i64();
-    TCGv_i64 shifted = tcg_temp_new_i64();
+    TCGv_i64 carry = tcg_temp_new_i64();
     TCGv_i64 tmp = tcg_temp_new_i64();
 
-    /* Place bits 125-127 of vB in sh. */
-    get_avr64(avrB, VB, false);
-    tcg_gen_andi_i64(sh, avrB, 0x07ULL);
+    /* Place bits 125-127 of vB in 'sh'. */
+    get_avr64(avr, VB, false);
+    tcg_gen_andi_i64(sh, avr, 0x07ULL);
 
     /*
-     * Save lowest sh bits of higher doubleword element of vA in variable
-     * shifted and perform shift on higher doubleword.
+     * Save lowest 'sh' bits of higher doubleword element of vA in variable
+     * 'carry' and perform shift on higher doubleword.
      */
-    get_avr64(avrA, VA, true);
-    tcg_gen_subfi_i64(tmp, 64, sh);
-    tcg_gen_shl_i64(shifted, avrA, tmp);
-    tcg_gen_andi_i64(shifted, shifted, 0xfe00000000000000ULL);
-    tcg_gen_shr_i64(avrA, avrA, sh);
-    set_avr64(VT, avrA, true);
+    get_avr64(avr, VA, true);
+    tcg_gen_subfi_i64(tmp, 32, sh);
+    tcg_gen_shli_i64(carry, avr, 32);
+    tcg_gen_shl_i64(carry, carry, tmp);
+    tcg_gen_shr_i64(avr, avr, sh);
+    set_avr64(VT, avr, true);
     /*
      * Perform shift on lower doubleword element of vA and replace highest
-     * sh bits with shifted.
+     * 'sh' bits with 'carry'.
      */
-    get_avr64(avrA, VA, false);
-    tcg_gen_shr_i64(avrA, avrA, sh);
-    tcg_gen_or_i64(avrA, avrA, shifted);
-    set_avr64(VT, avrA, false);
+    get_avr64(avr, VA, false);
+    tcg_gen_shr_i64(avr, avr, sh);
+    tcg_gen_or_i64(avr, avr, carry);
+    set_avr64(VT, avr, false);
 
-    tcg_temp_free_i64(avrA);
-    tcg_temp_free_i64(avrB);
+    tcg_temp_free_i64(avr);
     tcg_temp_free_i64(sh);
-    tcg_temp_free_i64(shifted);
+    tcg_temp_free_i64(carry);
     tcg_temp_free_i64(tmp);
 }