21 lines
616 B
C
21 lines
616 B
C
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/* Expand the stack by 32 bytes all at once using the PUSHA
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instruction.
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This must succeed. */
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#include <string.h>
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#include "tests/arc4.h"
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#include "tests/cksum.h"
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#include "tests/lib.h"
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#include "tests/main.h"
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void
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test_main (void)
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{
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asm volatile
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("movl %%esp, %%eax;" /* Save a copy of the stack pointer. */
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"andl $0xfffff000, %%esp;" /* Move stack pointer to bottom of page. */
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"pushal;" /* Push 32 bytes on stack at once. */
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"movl %%eax, %%esp" /* Restore copied stack pointer. */
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: : : "eax"); /* Tell GCC we destroyed eax. */
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}
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