[PATCH 08/17] ppc64: Simplify reginfo_is_eq

[Richard Henderson <richard.henderson@linaro.org>]

Since we now only copy into reginfo exactly what we want to compare,
and since we zero all unused padding and reserved space, we need not
enumerate each field for comparison, but defer to memcmp.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 risu_reginfo_ppc64.c | 31 +------------------------------
 1 file changed, 1 insertion(+), 30 deletions(-)

diff --git a/risu_reginfo_ppc64.c b/risu_reginfo_ppc64.c
index 109b87b..e0c650b 100644
--- a/risu_reginfo_ppc64.c
+++ b/risu_reginfo_ppc64.c
@@ -67,36 +67,7 @@ void reginfo_init(struct reginfo *ri, ucontext_t *uc, void *siaddr)
 /* reginfo_is_eq: compare the reginfo structs, returns nonzero if equal */
 int reginfo_is_eq(struct reginfo *m, struct reginfo *a)
 {
-    int i;
-    for (i = 0; i < 32; i++) {
-        if (m->gregs[i] != a->gregs[i]) {
-            return 0;
-        }
-    }
-
-    if (m->gregs[XER] != a->gregs[XER]) {
-        return 0;
-    }
-
-    if (m->gregs[CCR] != a->gregs[CCR]) {
-        return 0;
-    }
-
-    for (i = 0; i < 32; i++) {
-        if (m->fpregs[i] != a->fpregs[i]) {
-            return 0;
-        }
-    }
-
-    for (i = 0; i < 32; i++) {
-        if (m->vrregs.vrregs[i][0] != a->vrregs.vrregs[i][0] ||
-            m->vrregs.vrregs[i][1] != a->vrregs.vrregs[i][1] ||
-            m->vrregs.vrregs[i][2] != a->vrregs.vrregs[i][2] ||
-            m->vrregs.vrregs[i][3] != a->vrregs.vrregs[i][3]) {
-            return 0;
-        }
-    }
-    return 1;
+    return memcmp(m, a, sizeof(*m)) == 0;
 }
 
 /* reginfo_dump: print state to a stream */
-- 
2.34.1