diff mbox series

[v3,45/57] tcg/arm: Use atom_and_align_for_opc

Message ID 20230425193146.2106111-46-richard.henderson@linaro.org
State New
Headers show
Series tcg: Improve atomicity support | expand

Commit Message

Richard Henderson April 25, 2023, 7:31 p.m. UTC 
No change to the ultimate load/store routines yet, so some atomicity
conditions not yet honored, but plumbs the change to alignment through
the relevant functions.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/arm/tcg-target.c.inc | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)
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Patch

diff --git a/tcg/arm/tcg-target.c.inc b/tcg/arm/tcg-target.c.inc
index e5aed03247..edd995e04f 100644
--- a/tcg/arm/tcg-target.c.inc
+++ b/tcg/arm/tcg-target.c.inc
@@ -1323,6 +1323,8 @@  typedef struct {
     TCGReg base;
     int index;
     bool index_scratch;
+    MemOp align;
+    MemOp atom;
 } HostAddress;
 
 bool tcg_target_has_memory_bswap(MemOp memop)
@@ -1379,8 +1381,12 @@  static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
 {
     TCGLabelQemuLdst *ldst = NULL;
     MemOp opc = get_memop(oi);
-    MemOp a_bits = get_alignment_bits(opc);
-    unsigned a_mask = (1 << a_bits) - 1;
+    MemOp a_bits, atom_a, atom_u;
+    unsigned a_mask;
+
+    a_bits = atom_and_align_for_opc(s, &atom_a, &atom_u, opc,
+                                    MO_ATOM_IFALIGN, false);
+    a_mask = (1 << a_bits) - 1;
 
 #ifdef CONFIG_SOFTMMU
     int mem_index = get_mmuidx(oi);
@@ -1498,6 +1504,9 @@  static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
     };
 #endif
 
+    h->align = a_bits;
+    h->atom = atom_a;
+
     return ldst;
 }