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mem: Remove unaligned loads in base function
Change-Id: I8fb0f2e2e372485c864d5c60f816b661a865b707 Signed-off-by: Roy Oursler <roy.j.oursler@intel.com>
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@ -51,5 +51,10 @@ static inline uint64_t load_u64(uint8_t * buf) {
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return ret;
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}
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static inline uintmax_t load_umax(uint8_t * buf) {
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uintmax_t ret;
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memcpy(&ret, buf, sizeof(ret));
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return ret;
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}
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#endif
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@ -29,22 +29,22 @@
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#include <stdint.h>
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#include <stddef.h>
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#include "unaligned.h"
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int mem_zero_detect_base(void *buf, size_t n)
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{
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unsigned char *c;
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uintmax_t a = 0, *p = buf;
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uint8_t *c = buf;
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uintmax_t a = 0;
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// Check buffer in native machine width comparisons
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while (n >= sizeof(*p)) {
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n -= sizeof(*p);
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if (*p++ != 0)
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while (n >= sizeof(uintmax_t)) {
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n -= sizeof(uintmax_t);
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if (load_umax(c) != 0)
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return -1;
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c += sizeof(uintmax_t);
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}
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// Check remaining bytes
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c = (unsigned char *)p;
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switch (n) {
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case 7:
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a |= *c++; // fall through to case 6,5,4
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@ -53,12 +53,12 @@ int mem_zero_detect_base(void *buf, size_t n)
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case 5:
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a |= *c++; // fall through to case 4
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case 4:
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a |= *((unsigned int *)c);
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a |= load_u32(c);
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break;
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case 3:
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a |= *c++; // fall through to case 2
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case 2:
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a |= *((unsigned short *)c);
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a |= load_u16(c);
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break;
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case 1:
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a |= *c;
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