From 47de89f88c49676a86a987bd4bcbe866e19971ff Mon Sep 17 00:00:00 2001
From: Zhijin Zeng <zhijin.zeng@spacemit.com>
Date: Tue, 8 Sep 2026 13:54:07 +0800
Subject: [PATCH] [RV64_DYNAREC] Fix writing read-only page for SHA/AES opcode

If `Ex` is memory source operand, not need to write back. If `Ex` pointer to
read-only page, `if (!MODREG) PUTEX_vector(v1, VECTOR_SEW32)` will cause SIGSEGV
error.
---
 src/dynarec/rv64/dynarec_rv64_0f.c     | 2 --
 src/dynarec/rv64/dynarec_rv64_660f38.c | 5 -----
 2 files changed, 7 deletions(-)

diff --git a/src/dynarec/rv64/dynarec_rv64_0f.c b/src/dynarec/rv64/dynarec_rv64_0f.c
index 2634ba07f7..ebaedde524 100644
--- a/src/dynarec/rv64/dynarec_rv64_0f.c
+++ b/src/dynarec/rv64/dynarec_rv64_0f.c
@@ -880,7 +880,6 @@ uintptr_t dynarec64_0F(dynarec_rv64_t* dyn, uintptr_t addr, uintptr_t ip, int ni
                             vx0 = t;
                         }
                         VSHA2CL_VV(v0, v1, vx0);
-                        if (!MODREG) PUTEX_vector(v1, VECTOR_SEW32);
                         break;
                     }
                     if (u8 != 0xCB && cpuext.vector && cpuext.zvbb) {
@@ -945,7 +944,6 @@ uintptr_t dynarec64_0F(dynarec_rv64_t* dyn, uintptr_t addr, uintptr_t ip, int ni
                                 VADD_VV(v0, v0, d1, 1);
                                 break;
                         }
-                        if (!MODREG) PUTEX_vector(v1, VECTOR_SEW32);
                         break;
                     }
                     if (MODREG) {
diff --git a/src/dynarec/rv64/dynarec_rv64_660f38.c b/src/dynarec/rv64/dynarec_rv64_660f38.c
index d7f17962c8..783bb448a3 100644
--- a/src/dynarec/rv64/dynarec_rv64_660f38.c
+++ b/src/dynarec/rv64/dynarec_rv64_660f38.c
@@ -734,7 +734,6 @@ uintptr_t dynarec64_660F38(dynarec_rv64_t* dyn, uintptr_t addr, uint8_t opcode,
                         VMV_V_X(v2, x4);
                         VAESDM_VV(v2, v1);
                         VMV_V_V(v0, v2);
-                        if (!MODREG) PUTEX_vector(v1, VECTOR_SEW32);
                         break;
                     }
                     GETGX();
@@ -752,7 +751,6 @@ uintptr_t dynarec64_660F38(dynarec_rv64_t* dyn, uintptr_t addr, uint8_t opcode,
                         GETGX_vector(v0, 1, VECTOR_SEW32);
                         GETEX_vector(v1, 0, 8, VECTOR_SEW32);
                         VAESEM_VV(v0, v1);
-                        if (!MODREG) PUTEX_vector(v1, VECTOR_SEW32);
                         break;
                     }
                     GETG;
@@ -781,7 +779,6 @@ uintptr_t dynarec64_660F38(dynarec_rv64_t* dyn, uintptr_t addr, uint8_t opcode,
                         GETGX_vector(v0, 1, VECTOR_SEW32);
                         GETEX_vector(v1, 0, 8, VECTOR_SEW32);
                         VAESEF_VV(v0, v1);
-                        if (!MODREG) PUTEX_vector(v1, VECTOR_SEW32);
                         break;
                     }
                     GETG;
@@ -822,7 +819,6 @@ uintptr_t dynarec64_660F38(dynarec_rv64_t* dyn, uintptr_t addr, uint8_t opcode,
                         VMV_V_X(v2, x4);
                         VAESDM_VV(v2, v0);
                         VXOR_VV(v0, v2, v1, 1);
-                        if (!MODREG) PUTEX_vector(v1, VECTOR_SEW32);
                         break;
                     }
                     GETG;
@@ -852,7 +848,6 @@ uintptr_t dynarec64_660F38(dynarec_rv64_t* dyn, uintptr_t addr, uint8_t opcode,
                         GETGX_vector(v0, 1, VECTOR_SEW32);
                         GETEX_vector(v1, 0, 8, VECTOR_SEW32);
                         VAESDF_VV(v0, v1);
-                        if (!MODREG) PUTEX_vector(v1, VECTOR_SEW32);
                         break;
                     }
                     GETG;