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62 lines
1.8 KiB
62 lines
1.8 KiB
/*
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* Copyright 2002-2019 Intel Corporation.
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*
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* This software is provided to you as Sample Source Code as defined in the accompanying
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* End User License Agreement for the Intel(R) Software Development Products ("Agreement")
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* section 1.L.
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*
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* This software and the related documents are provided as is, with no express or implied
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* warranties, other than those that are expressly stated in the License.
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*/
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/*! @file
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* A small test which doesn't link in a C runtime.
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* It provides a menagerie of different unpleasant push instructions, and
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* other instructions which exercise unpleasant corners of the instruction set,
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* such as access to (virtualised) segment registers.
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*/
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.data
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inputval: .long 0x01234567
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outputval: .long 0x00000000
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.text
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.globl _start
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_start:
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# Test 1 push rip relative indirect value to the stack
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mov $1, %rdi # %rdi holds the test number, returned as status of exit on failure
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pushq inputval(%rip)
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movq inputval(%rip), %rax
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cmp (%rsp),%rax
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jne 1f
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# Test 2 pop rip relative indirect value from the stack
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incq %rdi
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popq outputval(%rip) # Value should be the same as the value previously pushed.
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cmp outputval(%rip),%rax
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jne 1f
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# Test 3 call a routine through rip.
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incq %rdi
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mov $1,%rax
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lea stubRoutine(%rip),%r13
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mov %r13,outputval(%rip)
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call *outputval(%rip)
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cmp $0,%rax
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jne 1f
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# Exit
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movq $0,%rdi # first argument: exit code
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1:
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movq $231,%rax # system call number (sys_exit)
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syscall # call kernel
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# Paranoia in case we don't exit
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# Force a SEGV
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movq $0,0
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# Null routine
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stubRoutine:
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mov $0,%rax
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ret
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