Alpha, HPPA, and SH4 always use aligned addresses,
and therefore never produce accesses that cross pages.
Cc: Helge Deller <deller@gmx.de>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
include/accel/tcg/cpu-ops.h | 5 +++++
accel/tcg/cputlb.c | 13 +++++++++++++
target/alpha/cpu.c | 1 +
target/hppa/cpu.c | 1 +
target/sh4/cpu.c | 1 +
5 files changed, 21 insertions(+)
diff --git a/include/accel/tcg/cpu-ops.h b/include/accel/tcg/cpu-ops.h
index 83b2c2c864..4f3b4fd3bc 100644
--- a/include/accel/tcg/cpu-ops.h
+++ b/include/accel/tcg/cpu-ops.h
@@ -322,6 +322,11 @@ void cpu_check_watchpoint(CPUState *cpu, vaddr addr, vaddr len,
*/
int cpu_watchpoint_address_matches(CPUState *cpu, vaddr addr, vaddr len);
+/*
+ * Common pointer_wrap implementations.
+ */
+vaddr cpu_pointer_wrap_notreached(CPUState *, int, vaddr, vaddr);
+
#endif
#endif /* TCG_CPU_OPS_H */
diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c
index c394293d33..75cd875948 100644
--- a/accel/tcg/cputlb.c
+++ b/accel/tcg/cputlb.c
@@ -2932,3 +2932,16 @@ uint64_t cpu_ldq_code_mmu(CPUArchState *env, vaddr addr,
{
return do_ld8_mmu(env_cpu(env), addr, oi, retaddr, MMU_INST_FETCH);
}
+
+/*
+ * Common pointer_wrap implementations.
+ */
+
+/*
+ * To be used for strict alignment targets.
+ * Because no accesses are unaligned, no accesses wrap either.
+ */
+vaddr cpu_pointer_wrap_notreached(CPUState *cs, int idx, vaddr res, vaddr base)
+{
+ g_assert_not_reached();
+}
diff --git a/target/alpha/cpu.c b/target/alpha/cpu.c
index 890b84c032..2082db45ea 100644
--- a/target/alpha/cpu.c
+++ b/target/alpha/cpu.c
@@ -261,6 +261,7 @@ static const TCGCPUOps alpha_tcg_ops = {
.record_sigbus = alpha_cpu_record_sigbus,
#else
.tlb_fill = alpha_cpu_tlb_fill,
+ .pointer_wrap = cpu_pointer_wrap_notreached,
.cpu_exec_interrupt = alpha_cpu_exec_interrupt,
.cpu_exec_halt = alpha_cpu_has_work,
.cpu_exec_reset = cpu_reset,
diff --git a/target/hppa/cpu.c b/target/hppa/cpu.c
index 6465181543..24777727e6 100644
--- a/target/hppa/cpu.c
+++ b/target/hppa/cpu.c
@@ -269,6 +269,7 @@ static const TCGCPUOps hppa_tcg_ops = {
#ifndef CONFIG_USER_ONLY
.tlb_fill_align = hppa_cpu_tlb_fill_align,
+ .pointer_wrap = cpu_pointer_wrap_notreached,
.cpu_exec_interrupt = hppa_cpu_exec_interrupt,
.cpu_exec_halt = hppa_cpu_has_work,
.cpu_exec_reset = cpu_reset,
diff --git a/target/sh4/cpu.c b/target/sh4/cpu.c
index b35f18e250..4f561e8c91 100644
--- a/target/sh4/cpu.c
+++ b/target/sh4/cpu.c
@@ -296,6 +296,7 @@ static const TCGCPUOps superh_tcg_ops = {
#ifndef CONFIG_USER_ONLY
.tlb_fill = superh_cpu_tlb_fill,
+ .pointer_wrap = cpu_pointer_wrap_notreached,
.cpu_exec_interrupt = superh_cpu_exec_interrupt,
.cpu_exec_halt = superh_cpu_has_work,
.cpu_exec_reset = cpu_reset,
--
2.43.0