19 lines
544 B
C
19 lines
544 B
C
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#include <stdint.h>
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#define STACK_CHK_GUARD \
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({ uintptr_t x; __asm__ ("ear %0,%%a0; sllg %0,%0,32; ear %0,%%a1; lg %0,0x28(%0)" : "=a" (x)); x; })
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/* On s390/s390x there is no unique pointer guard, instead we use the
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same value as the stack guard. */
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#define POINTER_CHK_GUARD \
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({ \
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uintptr_t x; \
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__asm__ ("ear %0,%%a0;" \
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"sllg %0,%0,32;" \
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"ear %0,%%a1;" \
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"lg %0,%1(%0)" \
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: "=a" (x) \
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: "i" (offsetof (tcbhead_t, stack_guard))); \
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x; \
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})
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