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15df8b804c
for loop-exit. Otherwise, sign-extension may clobber the most recently read 7 bits. (Logical change 1.284)
26 lines
465 B
C
26 lines
465 B
C
#include <libunwind.h>
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unw_word_t
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_ReadSLEB (unsigned char **dpp)
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{
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unsigned shift = 0;
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unw_word_t byte, result = 0;
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unsigned char *bp = *dpp;
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while (1)
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{
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byte = *bp++;
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result |= (byte & 0x7f) << shift;
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shift += 7;
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if ((byte & 0x80) == 0)
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break;
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}
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if (shift < 8 * sizeof (unw_word_t) && (byte & 0x40) != 0)
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/* sign-extend negative value */
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result |= ((unw_word_t) -1) << shift;
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*dpp = bp;
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return result;
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}
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