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authorPaul Moore <pmoore@redhat.com>2013-10-21 10:34:19 -0400
committerPaul Moore <pmoore@redhat.com>2013-10-21 10:56:49 -0400
commit906ab67d32f75ea783e6f5350ae593241154c7e1 (patch)
tree4571c11b3e63abc332405eb203b838070a53946a
parent53dcfa3ff0eadd09adc0925e676f8ba320a1ca30 (diff)
downloadlibseccomp-906ab67d32f75ea783e6f5350ae593241154c7e1.tar.gz
all: apply basic formatting fixes to src/hash.c
There is still a lot of style/formatting work that should probably be done to this file, but this cleans it up enough so it passes our basic style checks. Signed-off-by: Paul Moore <pmoore@redhat.com>
-rw-r--r--src/hash.c1259
-rwxr-xr-xtools/check-syntax2
2 files changed, 752 insertions, 509 deletions
diff --git a/src/hash.c b/src/hash.c
index 6c54e18..5b55679 100644
--- a/src/hash.c
+++ b/src/hash.c
@@ -112,14 +112,14 @@ rotates.
-------------------------------------------------------------------------------
*/
#define mix(a,b,c) \
-{ \
- a -= c; a ^= rot(c, 4); c += b; \
- b -= a; b ^= rot(a, 6); a += c; \
- c -= b; c ^= rot(b, 8); b += a; \
- a -= c; a ^= rot(c,16); c += b; \
- b -= a; b ^= rot(a,19); a += c; \
- c -= b; c ^= rot(b, 4); b += a; \
-}
+ { \
+ a -= c; a ^= rot(c, 4); c += b; \
+ b -= a; b ^= rot(a, 6); a += c; \
+ c -= b; c ^= rot(b, 8); b += a; \
+ a -= c; a ^= rot(c,16); c += b; \
+ b -= a; b ^= rot(a,19); a += c; \
+ c -= b; c ^= rot(b, 4); b += a; \
+ }
/*
-------------------------------------------------------------------------------
@@ -147,15 +147,15 @@ and these came close:
-------------------------------------------------------------------------------
*/
#define final(a,b,c) \
-{ \
- c ^= b; c -= rot(b,14); \
- a ^= c; a -= rot(c,11); \
- b ^= a; b -= rot(a,25); \
- c ^= b; c -= rot(b,16); \
- a ^= c; a -= rot(c,4); \
- b ^= a; b -= rot(a,14); \
- c ^= b; c -= rot(b,24); \
-}
+ { \
+ c ^= b; c -= rot(b,14); \
+ a ^= c; a -= rot(c,11); \
+ b ^= a; b -= rot(a,25); \
+ c ^= b; c -= rot(b,16); \
+ a ^= c; a -= rot(c,4); \
+ b ^= a; b -= rot(a,14); \
+ c ^= b; c -= rot(b,24); \
+ }
/*
--------------------------------------------------------------------
@@ -171,38 +171,39 @@ and these came close:
--------------------------------------------------------------------
*/
uint32_t hashword(
-const uint32_t *k, /* the key, an array of uint32_t values */
-size_t length, /* the length of the key, in uint32_ts */
-uint32_t initval) /* the previous hash, or an arbitrary value */
+ const uint32_t *k, /* the key, an array of uint32_t values */
+ size_t length, /* the length of the key, in uint32_ts */
+ uint32_t initval) /* the previous hash, or an arbitrary value */
{
- uint32_t a,b,c;
-
- /* Set up the internal state */
- a = b = c = 0xdeadbeef + (((uint32_t)length)<<2) + initval;
-
- /*------------------------------------------------- handle most of the key */
- while (length > 3)
- {
- a += k[0];
- b += k[1];
- c += k[2];
- mix(a,b,c);
- length -= 3;
- k += 3;
- }
-
- /*------------------------------------------- handle the last 3 uint32_t's */
- switch(length) /* all the case statements fall through */
- {
- case 3 : c+=k[2];
- case 2 : b+=k[1];
- case 1 : a+=k[0];
- final(a,b,c);
- case 0: /* case 0: nothing left to add */
- break;
- }
- /*------------------------------------------------------ report the result */
- return c;
+ uint32_t a, b, c;
+
+ /* Set up the internal state */
+ a = b = c = 0xdeadbeef + (((uint32_t)length) << 2) + initval;
+
+ /*-------------------------------------------- handle most of the key */
+ while (length > 3) {
+ a += k[0];
+ b += k[1];
+ c += k[2];
+ mix(a, b, c);
+ length -= 3;
+ k += 3;
+ }
+
+ /*-------------------------------------- handle the last 3 uint32_t's */
+ switch(length) { /* all the case statements fall through */
+ case 3 :
+ c += k[2];
+ case 2 :
+ b += k[1];
+ case 1 :
+ a += k[0];
+ final(a, b, c);
+ case 0: /* case 0: nothing left to add */
+ break;
+ }
+ /*------------------------------------------------- report the result */
+ return c;
}
/*
@@ -214,40 +215,42 @@ both be initialized with seeds. If you pass in (*pb)==0, the output
--------------------------------------------------------------------
*/
void hashword2 (
-const uint32_t *k, /* the key, an array of uint32_t values */
-size_t length, /* the length of the key, in uint32_ts */
-uint32_t *pc, /* IN: seed OUT: primary hash value */
-uint32_t *pb) /* IN: more seed OUT: secondary hash value */
+ const uint32_t *k, /* the key, an array of uint32_t values */
+ size_t length, /* the length of the key, in uint32_ts */
+ uint32_t *pc, /* IN: seed OUT: primary hash value */
+ uint32_t *pb) /* IN: more seed OUT: secondary hash value */
{
- uint32_t a,b,c;
-
- /* Set up the internal state */
- a = b = c = 0xdeadbeef + ((uint32_t)(length<<2)) + *pc;
- c += *pb;
-
- /*------------------------------------------------- handle most of the key */
- while (length > 3)
- {
- a += k[0];
- b += k[1];
- c += k[2];
- mix(a,b,c);
- length -= 3;
- k += 3;
- }
-
- /*------------------------------------------- handle the last 3 uint32_t's */
- switch(length) /* all the case statements fall through */
- {
- case 3 : c+=k[2];
- case 2 : b+=k[1];
- case 1 : a+=k[0];
- final(a,b,c);
- case 0: /* case 0: nothing left to add */
- break;
- }
- /*------------------------------------------------------ report the result */
- *pc=c; *pb=b;
+ uint32_t a, b, c;
+
+ /* Set up the internal state */
+ a = b = c = 0xdeadbeef + ((uint32_t)(length << 2)) + *pc;
+ c += *pb;
+
+ /*-------------------------------------------- handle most of the key */
+ while (length > 3) {
+ a += k[0];
+ b += k[1];
+ c += k[2];
+ mix(a, b, c);
+ length -= 3;
+ k += 3;
+ }
+
+ /*-------------------------------------- handle the last 3 uint32_t's */
+ switch(length) { /* all the case statements fall through */
+ case 3 :
+ c += k[2];
+ case 2 :
+ b += k[1];
+ case 1 :
+ a += k[0];
+ final(a, b, c);
+ case 0: /* case 0: nothing left to add */
+ break;
+ }
+ /*------------------------------------------------- report the result */
+ *pc = c;
+ *pb = b;
}
/*
@@ -278,170 +281,251 @@ acceptable. Do NOT use for cryptographic purposes.
*/
uint32_t hashlittle( const void *key, size_t length, uint32_t initval)
{
- uint32_t a,b,c; /* internal state */
- union { const void *ptr; size_t i; } u; /* needed for Mac Powerbook G4 */
-
- /* Set up the internal state */
- a = b = c = 0xdeadbeef + ((uint32_t)length) + initval;
-
- u.ptr = key;
- if (HASH_LITTLE_ENDIAN && ((u.i & 0x3) == 0)) {
- const uint32_t *k = (const uint32_t *)key; /* read 32-bit chunks */
-
- /*------ all but last block: aligned reads and affect 32 bits of (a,b,c) */
- while (length > 12)
- {
- a += k[0];
- b += k[1];
- c += k[2];
- mix(a,b,c);
- length -= 12;
- k += 3;
- }
-
- /*----------------------------- handle the last (probably partial) block */
- /*
- * "k[2]&0xffffff" actually reads beyond the end of the string, but
- * then masks off the part it's not allowed to read. Because the
- * string is aligned, the masked-off tail is in the same word as the
- * rest of the string. Every machine with memory protection I've seen
- * does it on word boundaries, so is OK with this. But VALGRIND will
- * still catch it and complain. The masking trick does make the hash
- * noticably faster for short strings (like English words).
- */
+ uint32_t a, b, c; /* internal state */
+ union {
+ const void *ptr;
+ size_t i;
+ } u; /* needed for Mac Powerbook G4 */
+
+ /* Set up the internal state */
+ a = b = c = 0xdeadbeef + ((uint32_t)length) + initval;
+
+ u.ptr = key;
+ if (HASH_LITTLE_ENDIAN && ((u.i & 0x3) == 0)) {
+ const uint32_t *k = (const uint32_t *)key; /* read 32b chunks */
+
+ /* all but last block: aligned reads and affect 32-bits
+ * of (a,b,c) */
+ while (length > 12) {
+ a += k[0];
+ b += k[1];
+ c += k[2];
+ mix(a, b, c);
+ length -= 12;
+ k += 3;
+ }
+
+ /*------------------ handle the last (probably partial) block */
+ /*
+ * "k[2]&0xffffff" actually reads beyond the end of the string,
+ * but then masks off the part it's not allowed to read.
+ * Because the string is aligned, the masked-off tail is in the
+ * same word as the rest of the string. Every machine with
+ * memory protection I've seen does it on word boundaries, so
+ * is OK with this. But VALGRIND will still catch it and
+ * complain. The masking trick does make the hash noticably
+ * faster for short strings (like English words).
+ */
#ifndef VALGRIND
- switch(length)
- {
- case 12: c+=k[2]; b+=k[1]; a+=k[0]; break;
- case 11: c+=k[2]&0xffffff; b+=k[1]; a+=k[0]; break;
- case 10: c+=k[2]&0xffff; b+=k[1]; a+=k[0]; break;
- case 9 : c+=k[2]&0xff; b+=k[1]; a+=k[0]; break;
- case 8 : b+=k[1]; a+=k[0]; break;
- case 7 : b+=k[1]&0xffffff; a+=k[0]; break;
- case 6 : b+=k[1]&0xffff; a+=k[0]; break;
- case 5 : b+=k[1]&0xff; a+=k[0]; break;
- case 4 : a+=k[0]; break;
- case 3 : a+=k[0]&0xffffff; break;
- case 2 : a+=k[0]&0xffff; break;
- case 1 : a+=k[0]&0xff; break;
- case 0 : return c; /* zero length strings require no mixing */
- }
+ switch(length) {
+ case 12:
+ c += k[2];
+ b += k[1];
+ a += k[0];
+ break;
+ case 11:
+ c += k[2] & 0xffffff;
+ b += k[1];
+ a += k[0];
+ break;
+ case 10:
+ c += k[2] & 0xffff;
+ b += k[1];
+ a += k[0];
+ break;
+ case 9 :
+ c += k[2] & 0xff;
+ b += k[1];
+ a += k[0];
+ break;
+ case 8 :
+ b += k[1];
+ a += k[0];
+ break;
+ case 7 :
+ b += k[1] & 0xffffff;
+ a += k[0];
+ break;
+ case 6 :
+ b += k[1] & 0xffff;
+ a += k[0];
+ break;
+ case 5 :
+ b += k[1] & 0xff;
+ a += k[0];
+ break;
+ case 4 :
+ a += k[0];
+ break;
+ case 3 :
+ a += k[0] & 0xffffff;
+ break;
+ case 2 :
+ a += k[0] & 0xffff;
+ break;
+ case 1 :
+ a += k[0] & 0xff;
+ break;
+ case 0 :
+ return c; /* zero length strings require no mixing */
+ }
#else /* make valgrind happy */
- k8 = (const uint8_t *)k;
- switch(length)
- {
- case 12: c+=k[2]; b+=k[1]; a+=k[0]; break;
- case 11: c+=((uint32_t)k8[10])<<16; /* fall through */
- case 10: c+=((uint32_t)k8[9])<<8; /* fall through */
- case 9 : c+=k8[8]; /* fall through */
- case 8 : b+=k[1]; a+=k[0]; break;
- case 7 : b+=((uint32_t)k8[6])<<16; /* fall through */
- case 6 : b+=((uint32_t)k8[5])<<8; /* fall through */
- case 5 : b+=k8[4]; /* fall through */
- case 4 : a+=k[0]; break;
- case 3 : a+=((uint32_t)k8[2])<<16; /* fall through */
- case 2 : a+=((uint32_t)k8[1])<<8; /* fall through */
- case 1 : a+=k8[0]; break;
- case 0 : return c;
- }
+ k8 = (const uint8_t *)k;
+ switch(length) {
+ case 12:
+ c += k[2];
+ b += k[1];
+ a += k[0];
+ break;
+ case 11:
+ c += ((uint32_t)k8[10]) << 16; /* fall through */
+ case 10:
+ c += ((uint32_t)k8[9]) << 8; /* fall through */
+ case 9 :
+ c += k8[8]; /* fall through */
+ case 8 :
+ b += k[1];
+ a += k[0];
+ break;
+ case 7 :
+ b += ((uint32_t)k8[6]) << 16; /* fall through */
+ case 6 :
+ b += ((uint32_t)k8[5]) << 8; /* fall through */
+ case 5 :
+ b += k8[4]; /* fall through */
+ case 4 :
+ a += k[0];
+ break;
+ case 3 :
+ a += ((uint32_t)k8[2]) << 16; /* fall through */
+ case 2 :
+ a += ((uint32_t)k8[1]) << 8; /* fall through */
+ case 1 :
+ a += k8[0];
+ break;
+ case 0 :
+ return c;
+ }
#endif /* !valgrind */
- } else if (HASH_LITTLE_ENDIAN && ((u.i & 0x1) == 0)) {
- const uint16_t *k = (const uint16_t *)key; /* read 16-bit chunks */
- const uint8_t *k8;
-
- /*--------------- all but last block: aligned reads and different mixing */
- while (length > 12)
- {
- a += k[0] + (((uint32_t)k[1])<<16);
- b += k[2] + (((uint32_t)k[3])<<16);
- c += k[4] + (((uint32_t)k[5])<<16);
- mix(a,b,c);
- length -= 12;
- k += 6;
- }
-
- /*----------------------------- handle the last (probably partial) block */
- k8 = (const uint8_t *)k;
- switch(length)
- {
- case 12: c+=k[4]+(((uint32_t)k[5])<<16);
- b+=k[2]+(((uint32_t)k[3])<<16);
- a+=k[0]+(((uint32_t)k[1])<<16);
- break;
- case 11: c+=((uint32_t)k8[10])<<16; /* fall through */
- case 10: c+=k[4];
- b+=k[2]+(((uint32_t)k[3])<<16);
- a+=k[0]+(((uint32_t)k[1])<<16);
- break;
- case 9 : c+=k8[8]; /* fall through */
- case 8 : b+=k[2]+(((uint32_t)k[3])<<16);
- a+=k[0]+(((uint32_t)k[1])<<16);
- break;
- case 7 : b+=((uint32_t)k8[6])<<16; /* fall through */
- case 6 : b+=k[2];
- a+=k[0]+(((uint32_t)k[1])<<16);
- break;
- case 5 : b+=k8[4]; /* fall through */
- case 4 : a+=k[0]+(((uint32_t)k[1])<<16);
- break;
- case 3 : a+=((uint32_t)k8[2])<<16; /* fall through */
- case 2 : a+=k[0];
- break;
- case 1 : a+=k8[0];
- break;
- case 0 : return c; /* zero length requires no mixing */
- }
-
- } else { /* need to read the key one byte at a time */
- const uint8_t *k = (const uint8_t *)key;
-
- /*--------------- all but the last block: affect some 32 bits of (a,b,c) */
- while (length > 12)
- {
- a += k[0];
- a += ((uint32_t)k[1])<<8;
- a += ((uint32_t)k[2])<<16;
- a += ((uint32_t)k[3])<<24;
- b += k[4];
- b += ((uint32_t)k[5])<<8;
- b += ((uint32_t)k[6])<<16;
- b += ((uint32_t)k[7])<<24;
- c += k[8];
- c += ((uint32_t)k[9])<<8;
- c += ((uint32_t)k[10])<<16;
- c += ((uint32_t)k[11])<<24;
- mix(a,b,c);
- length -= 12;
- k += 12;
- }
-
- /*-------------------------------- last block: affect all 32 bits of (c) */
- switch(length) /* all the case statements fall through */
- {
- case 12: c+=((uint32_t)k[11])<<24;
- case 11: c+=((uint32_t)k[10])<<16;
- case 10: c+=((uint32_t)k[9])<<8;
- case 9 : c+=k[8];
- case 8 : b+=((uint32_t)k[7])<<24;
- case 7 : b+=((uint32_t)k[6])<<16;
- case 6 : b+=((uint32_t)k[5])<<8;
- case 5 : b+=k[4];
- case 4 : a+=((uint32_t)k[3])<<24;
- case 3 : a+=((uint32_t)k[2])<<16;
- case 2 : a+=((uint32_t)k[1])<<8;
- case 1 : a+=k[0];
- break;
- case 0 : return c;
- }
- }
-
- final(a,b,c);
- return c;
+ } else if (HASH_LITTLE_ENDIAN && ((u.i & 0x1) == 0)) {
+ const uint16_t *k = (const uint16_t *)key; /* read 16b chunks */
+ const uint8_t *k8;
+
+ /*---- all but last block: aligned reads and different mixing */
+ while (length > 12) {
+ a += k[0] + (((uint32_t)k[1]) << 16);
+ b += k[2] + (((uint32_t)k[3]) << 16);
+ c += k[4] + (((uint32_t)k[5]) << 16);
+ mix(a, b, c);
+ length -= 12;
+ k += 6;
+ }
+
+ /*------------------ handle the last (probably partial) block */
+ k8 = (const uint8_t *)k;
+ switch(length) {
+ case 12:
+ c += k[4] + (((uint32_t)k[5]) << 16);
+ b += k[2] + (((uint32_t)k[3]) << 16);
+ a += k[0] + (((uint32_t)k[1]) << 16);
+ break;
+ case 11:
+ c += ((uint32_t)k8[10]) << 16; /* fall through */
+ case 10:
+ c += k[4];
+ b += k[2] + (((uint32_t)k[3]) << 16);
+ a += k[0] + (((uint32_t)k[1]) << 16);
+ break;
+ case 9 :
+ c += k8[8]; /* fall through */
+ case 8 :
+ b += k[2] + (((uint32_t)k[3]) << 16);
+ a += k[0] + (((uint32_t)k[1]) << 16);
+ break;
+ case 7 :
+ b += ((uint32_t)k8[6]) << 16; /* fall through */
+ case 6 :
+ b += k[2];
+ a += k[0] + (((uint32_t)k[1]) << 16);
+ break;
+ case 5 :
+ b += k8[4]; /* fall through */
+ case 4 :
+ a += k[0] + (((uint32_t)k[1]) << 16);
+ break;
+ case 3 :
+ a += ((uint32_t)k8[2]) << 16; /* fall through */
+ case 2 :
+ a += k[0];
+ break;
+ case 1 :
+ a += k8[0];
+ break;
+ case 0 :
+ return c; /* zero length requires no mixing */
+ }
+
+ } else { /* need to read the key one byte at a time */
+ const uint8_t *k = (const uint8_t *)key;
+
+ /*---- all but the last block: affect some 32 bits of (a,b,c) */
+ while (length > 12) {
+ a += k[0];
+ a += ((uint32_t)k[1]) << 8;
+ a += ((uint32_t)k[2]) << 16;
+ a += ((uint32_t)k[3]) << 24;
+ b += k[4];
+ b += ((uint32_t)k[5]) << 8;
+ b += ((uint32_t)k[6]) << 16;
+ b += ((uint32_t)k[7]) << 24;
+ c += k[8];
+ c += ((uint32_t)k[9]) << 8;
+ c += ((uint32_t)k[10]) << 16;
+ c += ((uint32_t)k[11]) << 24;
+ mix(a, b, c);
+ length -= 12;
+ k += 12;
+ }
+
+ /*--------------------- last block: affect all 32 bits of (c) */
+ switch(length) { /* all the case statements fall through */
+ case 12:
+ c += ((uint32_t)k[11]) << 24;
+ case 11:
+ c += ((uint32_t)k[10]) << 16;
+ case 10:
+ c += ((uint32_t)k[9]) << 8;
+ case 9 :
+ c += k[8];
+ case 8 :
+ b += ((uint32_t)k[7]) << 24;
+ case 7 :
+ b += ((uint32_t)k[6]) << 16;
+ case 6 :
+ b += ((uint32_t)k[5]) << 8;
+ case 5 :
+ b += k[4];
+ case 4 :
+ a += ((uint32_t)k[3]) << 24;
+ case 3 :
+ a += ((uint32_t)k[2]) << 16;
+ case 2 :
+ a += ((uint32_t)k[1]) << 8;
+ case 1 :
+ a += k[0];
+ break;
+ case 0 :
+ return c;
+ }
+ }
+
+ final(a, b, c);
+ return c;
}
/*
@@ -455,176 +539,266 @@ uint32_t hashlittle( const void *key, size_t length, uint32_t initval)
* a 64-bit value do something like "*pc + (((uint64_t)*pb)<<32)".
*/
void hashlittle2(
- const void *key, /* the key to hash */
- size_t length, /* length of the key */
- uint32_t *pc, /* IN: primary initval, OUT: primary hash */
- uint32_t *pb) /* IN: secondary initval, OUT: secondary hash */
+ const void *key, /* the key to hash */
+ size_t length, /* length of the key */
+ uint32_t *pc, /* IN: primary initval, OUT: primary hash */
+ uint32_t *pb) /* IN: secondary initval, OUT: secondary hash */
{
- uint32_t a,b,c; /* internal state */
- union { const void *ptr; size_t i; } u; /* needed for Mac Powerbook G4 */
-
- /* Set up the internal state */
- a = b = c = 0xdeadbeef + ((uint32_t)length) + *pc;
- c += *pb;
-
- u.ptr = key;
- if (HASH_LITTLE_ENDIAN && ((u.i & 0x3) == 0)) {
- const uint32_t *k = (const uint32_t *)key; /* read 32-bit chunks */
-
- /*------ all but last block: aligned reads and affect 32 bits of (a,b,c) */
- while (length > 12)
- {
- a += k[0];
- b += k[1];
- c += k[2];
- mix(a,b,c);
- length -= 12;
- k += 3;
- }
-
- /*----------------------------- handle the last (probably partial) block */
- /*
- * "k[2]&0xffffff" actually reads beyond the end of the string, but
- * then masks off the part it's not allowed to read. Because the
- * string is aligned, the masked-off tail is in the same word as the
- * rest of the string. Every machine with memory protection I've seen
- * does it on word boundaries, so is OK with this. But VALGRIND will
- * still catch it and complain. The masking trick does make the hash
- * noticably faster for short strings (like English words).
- */
+ uint32_t a, b, c; /* internal state */
+ union {
+ const void *ptr;
+ size_t i;
+ } u; /* needed for Mac Powerbook G4 */
+
+ /* Set up the internal state */
+ a = b = c = 0xdeadbeef + ((uint32_t)length) + *pc;
+ c += *pb;
+
+ u.ptr = key;
+ if (HASH_LITTLE_ENDIAN && ((u.i & 0x3) == 0)) {
+ const uint32_t *k = (const uint32_t *)key; /* read 32b chunks */
+
+ /* all but last block: aligned reads and affect 32 bits
+ * of (a,b,c) */
+ while (length > 12) {
+ a += k[0];
+ b += k[1];
+ c += k[2];
+ mix(a, b, c);
+ length -= 12;
+ k += 3;
+ }
+
+ /*------------------ handle the last (probably partial) block */
+ /*
+ * "k[2]&0xffffff" actually reads beyond the end of the string,
+ * but then masks off the part it's not allowed to read.
+ * Because the string is aligned, the masked-off tail is in the
+ * same word as the rest of the string. Every machine with
+ * memory protection I've seen does it on word boundaries, so
+ * is OK with this. But VALGRIND will still catch it and
+ * complain. The masking trick does make the hash noticably
+ * faster for short strings (like English words).
+ */
#ifndef VALGRIND
- switch(length)
- {
- case 12: c+=k[2]; b+=k[1]; a+=k[0]; break;
- case 11: c+=k[2]&0xffffff; b+=k[1]; a+=k[0]; break;
- case 10: c+=k[2]&0xffff; b+=k[1]; a+=k[0]; break;
- case 9 : c+=k[2]&0xff; b+=k[1]; a+=k[0]; break;
- case 8 : b+=k[1]; a+=k[0]; break;
- case 7 : b+=k[1]&0xffffff; a+=k[0]; break;
- case 6 : b+=k[1]&0xffff; a+=k[0]; break;
- case 5 : b+=k[1]&0xff; a+=k[0]; break;
- case 4 : a+=k[0]; break;
- case 3 : a+=k[0]&0xffffff; break;
- case 2 : a+=k[0]&0xffff; break;
- case 1 : a+=k[0]&0xff; break;
- case 0 : *pc=c; *pb=b; return; /* zero length strings require no mixing */
- }
+ switch(length) {
+ case 12:
+ c += k[2];
+ b += k[1];
+ a += k[0];
+ break;
+ case 11:
+ c += k[2] & 0xffffff;
+ b += k[1];
+ a += k[0];
+ break;
+ case 10:
+ c += k[2] & 0xffff;
+ b += k[1];
+ a += k[0];
+ break;
+ case 9 :
+ c += k[2] & 0xff;
+ b += k[1];
+ a += k[0];
+ break;
+ case 8 :
+ b += k[1];
+ a += k[0];
+ break;
+ case 7 :
+ b += k[1] & 0xffffff;
+ a += k[0];
+ break;
+ case 6 :
+ b += k[1] & 0xffff;
+ a += k[0];
+ break;
+ case 5 :
+ b += k[1] & 0xff;
+ a += k[0];
+ break;
+ case 4 :
+ a += k[0];
+ break;
+ case 3 :
+ a += k[0] & 0xffffff;
+ break;
+ case 2 :
+ a += k[0] & 0xffff;
+ break;
+ case 1 :
+ a += k[0] & 0xff;
+ break;
+ case 0 :
+ *pc = c;
+ *pb = b;
+ return; /* zero length strings require no mixing */
+ }
#else /* make valgrind happy */
- k8 = (const uint8_t *)k;
- switch(length)
- {
- case 12: c+=k[2]; b+=k[1]; a+=k[0]; break;
- case 11: c+=((uint32_t)k8[10])<<16; /* fall through */
- case 10: c+=((uint32_t)k8[9])<<8; /* fall through */
- case 9 : c+=k8[8]; /* fall through */
- case 8 : b+=k[1]; a+=k[0]; break;
- case 7 : b+=((uint32_t)k8[6])<<16; /* fall through */
- case 6 : b+=((uint32_t)k8[5])<<8; /* fall through */
- case 5 : b+=k8[4]; /* fall through */
- case 4 : a+=k[0]; break;
- case 3 : a+=((uint32_t)k8[2])<<16; /* fall through */
- case 2 : a+=((uint32_t)k8[1])<<8; /* fall through */
- case 1 : a+=k8[0]; break;
- case 0 : *pc=c; *pb=b; return; /* zero length strings require no mixing */
- }
+ k8 = (const uint8_t *)k;
+ switch(length) {
+ case 12:
+ c += k[2];
+ b += k[1];
+ a += k[0];
+ break;
+ case 11:
+ c += ((uint32_t)k8[10]) << 16; /* fall through */
+ case 10:
+ c += ((uint32_t)k8[9]) << 8; /* fall through */
+ case 9 :
+ c += k8[8]; /* fall through */
+ case 8 :
+ b += k[1];
+ a += k[0];
+ break;
+ case 7 :
+ b += ((uint32_t)k8[6]) << 16; /* fall through */
+ case 6 :
+ b += ((uint32_t)k8[5]) << 8; /* fall through */
+ case 5 :
+ b += k8[4]; /* fall through */
+ case 4 :
+ a += k[0];
+ break;
+ case 3 :
+ a += ((uint32_t)k8[2]) << 16; /* fall through */
+ case 2 :
+ a += ((uint32_t)k8[1]) << 8; /* fall through */
+ case 1 :
+ a += k8[0];
+ break;
+ case 0 :
+ *pc = c;
+ *pb = b;
+ return; /* zero length strings require no mixing */
+ }
#endif /* !valgrind */
- } else if (HASH_LITTLE_ENDIAN && ((u.i & 0x1) == 0)) {
- const uint16_t *k = (const uint16_t *)key; /* read 16-bit chunks */
- const uint8_t *k8;
-
- /*--------------- all but last block: aligned reads and different mixing */
- while (length > 12)
- {
- a += k[0] + (((uint32_t)k[1])<<16);
- b += k[2] + (((uint32_t)k[3])<<16);
- c += k[4] + (((uint32_t)k[5])<<16);
- mix(a,b,c);
- length -= 12;
- k += 6;
- }
-
- /*----------------------------- handle the last (probably partial) block */
- k8 = (const uint8_t *)k;
- switch(length)
- {
- case 12: c+=k[4]+(((uint32_t)k[5])<<16);
- b+=k[2]+(((uint32_t)k[3])<<16);
- a+=k[0]+(((uint32_t)k[1])<<16);
- break;
- case 11: c+=((uint32_t)k8[10])<<16; /* fall through */
- case 10: c+=k[4];
- b+=k[2]+(((uint32_t)k[3])<<16);
- a+=k[0]+(((uint32_t)k[1])<<16);
- break;
- case 9 : c+=k8[8]; /* fall through */
- case 8 : b+=k[2]+(((uint32_t)k[3])<<16);
- a+=k[0]+(((uint32_t)k[1])<<16);
- break;
- case 7 : b+=((uint32_t)k8[6])<<16; /* fall through */
- case 6 : b+=k[2];
- a+=k[0]+(((uint32_t)k[1])<<16);
- break;
- case 5 : b+=k8[4]; /* fall through */
- case 4 : a+=k[0]+(((uint32_t)k[1])<<16);
- break;
- case 3 : a+=((uint32_t)k8[2])<<16; /* fall through */
- case 2 : a+=k[0];
- break;
- case 1 : a+=k8[0];
- break;
- case 0 : *pc=c; *pb=b; return; /* zero length strings require no mixing */
- }
-
- } else { /* need to read the key one byte at a time */
- const uint8_t *k = (const uint8_t *)key;
-
- /*--------------- all but the last block: affect some 32 bits of (a,b,c) */
- while (length > 12)
- {
- a += k[0];
- a += ((uint32_t)k[1])<<8;
- a += ((uint32_t)k[2])<<16;
- a += ((uint32_t)k[3])<<24;
- b += k[4];
- b += ((uint32_t)k[5])<<8;
- b += ((uint32_t)k[6])<<16;
- b += ((uint32_t)k[7])<<24;
- c += k[8];
- c += ((uint32_t)k[9])<<8;
- c += ((uint32_t)k[10])<<16;
- c += ((uint32_t)k[11])<<24;
- mix(a,b,c);
- length -= 12;
- k += 12;
- }
-
- /*-------------------------------- last block: affect all 32 bits of (c) */
- switch(length) /* all the case statements fall through */
- {
- case 12: c+=((uint32_t)k[11])<<24;
- case 11: c+=((uint32_t)k[10])<<16;
- case 10: c+=((uint32_t)k[9])<<8;
- case 9 : c+=k[8];
- case 8 : b+=((uint32_t)k[7])<<24;
- case 7 : b+=((uint32_t)k[6])<<16;
- case 6 : b+=((uint32_t)k[5])<<8;
- case 5 : b+=k[4];
- case 4 : a+=((uint32_t)k[3])<<24;
- case 3 : a+=((uint32_t)k[2])<<16;
- case 2 : a+=((uint32_t)k[1])<<8;
- case 1 : a+=k[0];
- break;
- case 0 : *pc=c; *pb=b; return; /* zero length strings require no mixing */
- }
- }
-
- final(a,b,c);
- *pc=c; *pb=b;
+ } else if (HASH_LITTLE_ENDIAN && ((u.i & 0x1) == 0)) {
+ const uint16_t *k = (const uint16_t *)key; /* read 16b chunks */
+ const uint8_t *k8;
+
+ /*---- all but last block: aligned reads and different mixing */
+ while (length > 12) {
+ a += k[0] + (((uint32_t)k[1]) << 16);
+ b += k[2] + (((uint32_t)k[3]) << 16);
+ c += k[4] + (((uint32_t)k[5]) << 16);
+ mix(a, b, c);
+ length -= 12;
+ k += 6;
+ }
+
+ /*------------------ handle the last (probably partial) block */
+ k8 = (const uint8_t *)k;
+ switch(length) {
+ case 12:
+ c += k[4] + (((uint32_t)k[5]) << 16);
+ b += k[2] + (((uint32_t)k[3]) << 16);
+ a += k[0] + (((uint32_t)k[1]) << 16);
+ break;
+ case 11:
+ c += ((uint32_t)k8[10]) << 16; /* fall through */
+ case 10:
+ c += k[4];
+ b += k[2] + (((uint32_t)k[3]) << 16);
+ a += k[0] + (((uint32_t)k[1]) << 16);
+ break;
+ case 9 :
+ c += k8[8]; /* fall through */
+ case 8 :
+ b += k[2] + (((uint32_t)k[3]) << 16);
+ a += k[0] + (((uint32_t)k[1]) << 16);
+ break;
+ case 7 :
+ b += ((uint32_t)k8[6]) << 16; /* fall through */
+ case 6 :
+ b += k[2];
+ a += k[0] + (((uint32_t)k[1]) << 16);
+ break;
+ case 5 :
+ b += k8[4]; /* fall through */
+ case 4 :
+ a += k[0] + (((uint32_t)k[1]) << 16);
+ break;
+ case 3 :
+ a += ((uint32_t)k8[2]) << 16; /* fall through */
+ case 2 :
+ a += k[0];
+ break;
+ case 1 :
+ a += k8[0];
+ break;
+ case 0 :
+ *pc = c;
+ *pb = b;
+ return; /* zero length strings require no mixing */
+ }
+
+ } else { /* need to read the key one byte at a time */
+ const uint8_t *k = (const uint8_t *)key;
+
+ /*---- all but the last block: affect some 32 bits of (a,b,c) */
+ while (length > 12) {
+ a += k[0];
+ a += ((uint32_t)k[1]) << 8;
+ a += ((uint32_t)k[2]) << 16;
+ a += ((uint32_t)k[3]) << 24;
+ b += k[4];
+ b += ((uint32_t)k[5]) << 8;
+ b += ((uint32_t)k[6]) << 16;
+ b += ((uint32_t)k[7]) << 24;
+ c += k[8];
+ c += ((uint32_t)k[9]) << 8;
+ c += ((uint32_t)k[10]) << 16;
+ c += ((uint32_t)k[11]) << 24;
+ mix(a, b, c);
+ length -= 12;
+ k += 12;
+ }
+
+ /*--------------------- last block: affect all 32 bits of (c) */
+ switch(length) { /* all the case statements fall through */
+ case 12:
+ c += ((uint32_t)k[11]) << 24;
+ case 11:
+ c += ((uint32_t)k[10]) << 16;
+ case 10:
+ c += ((uint32_t)k[9]) << 8;
+ case 9 :
+ c += k[8];
+ case 8 :
+ b += ((uint32_t)k[7]) << 24;
+ case 7 :
+ b += ((uint32_t)k[6]) << 16;
+ case 6 :
+ b += ((uint32_t)k[5]) << 8;
+ case 5 :
+ b += k[4];
+ case 4 :
+ a += ((uint32_t)k[3]) << 24;
+ case 3 :
+ a += ((uint32_t)k[2]) << 16;
+ case 2 :
+ a += ((uint32_t)k[1]) << 8;
+ case 1 :
+ a += k[0];
+ break;
+ case 0 :
+ *pc = c;
+ *pb = b;
+ return; /* zero length strings require no mixing */
+ }
+ }
+
+ final(a, b, c);
+ *pc = c;
+ *pb = b;
}
/*
@@ -635,122 +809,191 @@ void hashlittle2(
*/
uint32_t hashbig( const void *key, size_t length, uint32_t initval)
{
- uint32_t a,b,c;
- union { const void *ptr; size_t i; } u; /* to cast key to (size_t) happily */
-
- /* Set up the internal state */
- a = b = c = 0xdeadbeef + ((uint32_t)length) + initval;
-
- u.ptr = key;
- if (HASH_BIG_ENDIAN && ((u.i & 0x3) == 0)) {
- const uint32_t *k = (const uint32_t *)key; /* read 32-bit chunks */
-
- /*------ all but last block: aligned reads and affect 32 bits of (a,b,c) */
- while (length > 12)
- {
- a += k[0];
- b += k[1];
- c += k[2];
- mix(a,b,c);
- length -= 12;
- k += 3;
- }
-
- /*----------------------------- handle the last (probably partial) block */
- /*
- * "k[2]<<8" actually reads beyond the end of the string, but
- * then shifts out the part it's not allowed to read. Because the
- * string is aligned, the illegal read is in the same word as the
- * rest of the string. Every machine with memory protection I've seen
- * does it on word boundaries, so is OK with this. But VALGRIND will
- * still catch it and complain. The masking trick does make the hash
- * noticably faster for short strings (like English words).
- */
+ uint32_t a, b, c;
+ union {
+ const void *ptr;
+ size_t i;
+ } u; /* to cast key to (size_t) happily */
+
+ /* Set up the internal state */
+ a = b = c = 0xdeadbeef + ((uint32_t)length) + initval;
+
+ u.ptr = key;
+ if (HASH_BIG_ENDIAN && ((u.i & 0x3) == 0)) {
+ const uint32_t *k = (const uint32_t *)key; /* read 32b chunks */
+
+ /* all but last block: aligned reads and affect 32 bits
+ * of (a,b,c) */
+ while (length > 12) {
+ a += k[0];
+ b += k[1];
+ c += k[2];
+ mix(a, b, c);
+ length -= 12;
+ k += 3;
+ }
+
+ /*------------------ handle the last (probably partial) block */
+ /*
+ * "k[2]<<8" actually reads beyond the end of the string, but
+ * then shifts out the part it's not allowed to read. Because
+ * the string is aligned, the illegal read is in the same word
+ * as the rest of the string. Every machine with memory
+ * protection I've seen does it on word boundaries, so is OK
+ * with this. But VALGRIND will still catch it and complain.
+ * The masking trick does make the hash noticably faster for
+ * short strings (like English words).
+ */
#ifndef VALGRIND
- switch(length)
- {
- case 12: c+=k[2]; b+=k[1]; a+=k[0]; break;
- case 11: c+=k[2]&0xffffff00; b+=k[1]; a+=k[0]; break;
- case 10: c+=k[2]&0xffff0000; b+=k[1]; a+=k[0]; break;
- case 9 : c+=k[2]&0xff000000; b+=k[1]; a+=k[0]; break;
- case 8 : b+=k[1]; a+=k[0]; break;
- case 7 : b+=k[1]&0xffffff00; a+=k[0]; break;
- case 6 : b+=k[1]&0xffff0000; a+=k[0]; break;
- case 5 : b+=k[1]&0xff000000; a+=k[0]; break;
- case 4 : a+=k[0]; break;
- case 3 : a+=k[0]&0xffffff00; break;
- case 2 : a+=k[0]&0xffff0000; break;
- case 1 : a+=k[0]&0xff000000; break;
- case 0 : return c; /* zero length strings require no mixing */
- }
+ switch(length) {
+ case 12:
+ c += k[2];
+ b += k[1];
+ a += k[0];
+ break;
+ case 11:
+ c += k[2] & 0xffffff00;
+ b += k[1];
+ a += k[0];
+ break;
+ case 10:
+ c += k[2] & 0xffff0000;
+ b += k[1];
+ a += k[0];
+ break;
+ case 9 :
+ c += k[2] & 0xff000000;
+ b += k[1];
+ a += k[0];
+ break;
+ case 8 :
+ b += k[1];
+ a += k[0];
+ break;
+ case 7 :
+ b += k[1] & 0xffffff00;
+ a += k[0];
+ break;
+ case 6 :
+ b += k[1] & 0xffff0000;
+ a += k[0];
+ break;
+ case 5 :
+ b += k[1] & 0xff000000;
+ a += k[0];
+ break;
+ case 4 :
+ a += k[0];
+ break;
+ case 3 :
+ a += k[0] & 0xffffff00;
+ break;
+ case 2 :
+ a += k[0] & 0xffff0000;
+ break;
+ case 1 :
+ a += k[0] & 0xff000000;
+ break;
+ case 0 :
+ return c; /* zero length strings require no mixing */
+ }
#else /* make valgrind happy */
- k8 = (const uint8_t *)k;
- switch(length) /* all the case statements fall through */
- {
- case 12: c+=k[2]; b+=k[1]; a+=k[0]; break;
- case 11: c+=((uint32_t)k8[10])<<8; /* fall through */
- case 10: c+=((uint32_t)k8[9])<<16; /* fall through */
- case 9 : c+=((uint32_t)k8[8])<<24; /* fall through */
- case 8 : b+=k[1]; a+=k[0]; break;
- case 7 : b+=((uint32_t)k8[6])<<8; /* fall through */
- case 6 : b+=((uint32_t)k8[5])<<16; /* fall through */
- case 5 : b+=((uint32_t)k8[4])<<24; /* fall through */
- case 4 : a+=k[0]; break;
- case 3 : a+=((uint32_t)k8[2])<<8; /* fall through */
- case 2 : a+=((uint32_t)k8[1])<<16; /* fall through */
- case 1 : a+=((uint32_t)k8[0])<<24; break;
- case 0 : return c;
- }
+ k8 = (const uint8_t *)k;
+ switch(length) { /* all the case statements fall through */
+ case 12:
+ c += k[2];
+ b += k[1];
+ a += k[0];
+ break;
+ case 11:
+ c += ((uint32_t)k8[10]) << 8; /* fall through */
+ case 10:
+ c += ((uint32_t)k8[9]) << 16; /* fall through */
+ case 9 :
+ c += ((uint32_t)k8[8]) << 24; /* fall through */
+ case 8 :
+ b += k[1];
+ a += k[0];
+ break;
+ case 7 :
+ b += ((uint32_t)k8[6]) << 8; /* fall through */
+ case 6 :
+ b += ((uint32_t)k8[5]) << 16; /* fall through */
+ case 5 :
+ b += ((uint32_t)k8[4]) << 24; /* fall through */
+ case 4 :
+ a += k[0];
+ break;
+ case 3 :
+ a += ((uint32_t)k8[2]) << 8; /* fall through */
+ case 2 :
+ a += ((uint32_t)k8[1]) << 16; /* fall through */
+ case 1 :
+ a += ((uint32_t)k8[0]) << 24;
+ break;
+ case 0 :
+ return c;
+ }
#endif /* !VALGRIND */
- } else { /* need to read the key one byte at a time */
- const uint8_t *k = (const uint8_t *)key;
-
- /*--------------- all but the last block: affect some 32 bits of (a,b,c) */
- while (length > 12)
- {
- a += ((uint32_t)k[0])<<24;
- a += ((uint32_t)k[1])<<16;
- a += ((uint32_t)k[2])<<8;
- a += ((uint32_t)k[3]);
- b += ((uint32_t)k[4])<<24;
- b += ((uint32_t)k[5])<<16;
- b += ((uint32_t)k[6])<<8;
- b += ((uint32_t)k[7]);
- c += ((uint32_t)k[8])<<24;
- c += ((uint32_t)k[9])<<16;
- c += ((uint32_t)k[10])<<8;
- c += ((uint32_t)k[11]);
- mix(a,b,c);
- length -= 12;
- k += 12;
- }
-
- /*-------------------------------- last block: affect all 32 bits of (c) */
- switch(length) /* all the case statements fall through */
- {
- case 12: c+=k[11];
- case 11: c+=((uint32_t)k[10])<<8;
- case 10: c+=((uint32_t)k[9])<<16;
- case 9 : c+=((uint32_t)k[8])<<24;
- case 8 : b+=k[7];
- case 7 : b+=((uint32_t)k[6])<<8;
- case 6 : b+=((uint32_t)k[5])<<16;
- case 5 : b+=((uint32_t)k[4])<<24;
- case 4 : a+=k[3];
- case 3 : a+=((uint32_t)k[2])<<8;
- case 2 : a+=((uint32_t)k[1])<<16;
- case 1 : a+=((uint32_t)k[0])<<24;
- break;
- case 0 : return c;
- }
- }
-
- final(a,b,c);
- return c;
+ } else { /* need to read the key one byte at a time */
+ const uint8_t *k = (const uint8_t *)key;
+
+ /*---- all but the last block: affect some 32 bits of (a,b,c) */
+ while (length > 12) {
+ a += ((uint32_t)k[0]) << 24;
+ a += ((uint32_t)k[1]) << 16;
+ a += ((uint32_t)k[2]) << 8;
+ a += ((uint32_t)k[3]);
+ b += ((uint32_t)k[4]) << 24;
+ b += ((uint32_t)k[5]) << 16;
+ b += ((uint32_t)k[6]) << 8;
+ b += ((uint32_t)k[7]);
+ c += ((uint32_t)k[8]) << 24;
+ c += ((uint32_t)k[9]) << 16;
+ c += ((uint32_t)k[10]) << 8;
+ c += ((uint32_t)k[11]);
+ mix(a, b, c);
+ length -= 12;
+ k += 12;
+ }
+
+ /*--------------------- last block: affect all 32 bits of (c) */
+ switch(length) { /* all the case statements fall through */
+ case 12:
+ c += k[11];
+ case 11:
+ c += ((uint32_t)k[10]) << 8;
+ case 10:
+ c += ((uint32_t)k[9]) << 16;
+ case 9 :
+ c += ((uint32_t)k[8]) << 24;
+ case 8 :
+ b += k[7];
+ case 7 :
+ b += ((uint32_t)k[6]) << 8;
+ case 6 :
+ b += ((uint32_t)k[5]) << 16;
+ case 5 :
+ b += ((uint32_t)k[4]) << 24;
+ case 4 :
+ a += k[3];
+ case 3 :
+ a += ((uint32_t)k[2]) << 8;
+ case 2 :
+ a += ((uint32_t)k[1]) << 16;
+ case 1 :
+ a += ((uint32_t)k[0]) << 24;
+ break;
+ case 0 :
+ return c;
+ }
+ }
+
+ final(a, b, c);
+ return c;
}
-
diff --git a/tools/check-syntax b/tools/check-syntax
index b5ae9cc..f356a46 100755
--- a/tools/check-syntax
+++ b/tools/check-syntax
@@ -25,7 +25,7 @@ CHK_C_LIST="include/seccomp.h.in \
src/*.c src/*.h \
tests/*.c tests/*.h \
tools/*.c tools/*.h"
-CHK_C_EXCLUDE="src/hash.c"
+CHK_C_EXCLUDE=""
####
# functions