From: Alistair Francis <alistair.francis@wdc.com>
Date: Wed, 12 Aug 2020 19:13:41 +0000 (-0700)
Subject: target/riscv: Only support little endian guests
X-Git-Tag: qemu-xen-4.16.0-rc4~678^2~3
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=30f663b16f81d862256c7c71bc909d4588924d8c;p=qemu-xen.git

target/riscv: Only support little endian guests

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 93e5d4f13eca0d2a588e407187f33c6437aeaaf9.1597259519.git.alistair.francis@wdc.com
Message-Id: <93e5d4f13eca0d2a588e407187f33c6437aeaaf9.1597259519.git.alistair.francis@wdc.com>
---

diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index 390ef781e4..5e50683c58 100644
--- a/target/riscv/csr.c
+++ b/target/riscv/csr.c
@@ -840,6 +840,8 @@ static int read_hstatus(CPURISCVState *env, int csrno, target_ulong *val)
     /* We only support 64-bit VSXL */
     *val = set_field(*val, HSTATUS_VSXL, 2);
 #endif
+    /* We only support little endian */
+    *val = set_field(*val, HSTATUS_VSBE, 0);
     return 0;
 }
 
@@ -851,6 +853,9 @@ static int write_hstatus(CPURISCVState *env, int csrno, target_ulong val)
         qemu_log_mask(LOG_UNIMP, "QEMU does not support mixed HSXLEN options.");
     }
 #endif
+    if (get_field(val, HSTATUS_VSBE) != 0) {
+        qemu_log_mask(LOG_UNIMP, "QEMU does not support big endian guests.");
+    }
     return 0;
 }