target/ppc: Remove msr_ds macro

msr_ds macro hides the usage of env->msr, which is a bad behavior
Substitute it with FIELD_EX64 calls that explicitly use env->msr
as a parameter.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220504210541.115256-6-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc/cpu.h

@@ -355,6 +355,7 @@ typedef enum {
 #define MSR_LE   0  /* Little-endian mode                           1 hflags */
 
 FIELD(MSR, PR, MSR_PR, 1)
+FIELD(MSR, DS, MSR_DS, 1)
 FIELD(MSR, LE, MSR_LE, 1)
 
 /* PMU bits */
@@ -486,7 +487,6 @@ FIELD(MSR, LE, MSR_LE, 1)
 #define msr_ep   ((env->msr >> MSR_EP)   & 1)
 #define msr_ir   ((env->msr >> MSR_IR)   & 1)
 #define msr_dr   ((env->msr >> MSR_DR)   & 1)
-#define msr_ds   ((env->msr >> MSR_DS)   & 1)
 #define msr_ts   ((env->msr >> MSR_TS1)  & 3)
 
 #define DBCR0_ICMP (1 << 27)

target/ppc/mmu_common.c

@@ -768,7 +768,7 @@ static bool mmubooke206_get_as(CPUPPCState *env,
         *pr_out = !!(epidr & EPID_EPR);
         return true;
     } else {
-        *as_out = msr_ds;
+        *as_out = FIELD_EX64(env->msr, MSR, DS);
         *pr_out = FIELD_EX64(env->msr, MSR, PR);
         return false;
     }