Using MFC0 to read CP0_UserLocal uses tcg_gen_ld32s_tl, however
CP0_UserLocal is a target_ulong. On a big endian host with a MIPS64
target this reads and sign extends the more significant half of the
64-bit register.
Fix this by using ld_tl to load the whole target_ulong and ext32s_tl to
sign extend it, as done for various other target_ulong COP0 registers.
Fixes:
d279279e2b5c ("target-mips: implement UserLocal Register")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Yongbok Kim <yongbok.kim@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Petar Jovanovic <petar.jovanovic@imgtec.com>
Reviewed-by: Yongbok Kim <yongbok.kim@imgtec.com>
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
goto cp0_unimplemented;
case 2:
CP0_CHECK(ctx->ulri);
- tcg_gen_ld32s_tl(arg, cpu_env,
- offsetof(CPUMIPSState, active_tc.CP0_UserLocal));
+ tcg_gen_ld_tl(arg, cpu_env,
+ offsetof(CPUMIPSState, active_tc.CP0_UserLocal));
+ tcg_gen_ext32s_tl(arg, arg);
rn = "UserLocal";
break;
default: