43 lines
2.2 KiB
Text
43 lines
2.2 KiB
Text
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| # Execution begins at address 0
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0x000: | .pos 0
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0x000: 30f40002000000000000 | irmovq stack, %rsp # Set up stack pointer
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0x00a: 803800000000000000 | call main # Execute main program
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0x013: 00 | halt # Terminate program
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| # Array of 4 elements
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0x018: | .align 8
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0x018: 0d000d000d000000 | array: .quad 0x000d000d000d
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0x020: c000c000c0000000 | .quad 0x00c000c000c0
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0x028: 000b000b000b0000 | .quad 0x0b000b000b00
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0x030: 00a000a000a00000 | .quad 0xa000a000a000
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0x038: 30f71800000000000000 | main: irmovq array,%rdi
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0x042: 30f60400000000000000 | irmovq $4,%rsi
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0x04c: 805600000000000000 | call rsum # rsum(array, 4)
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0x055: 90 | ret
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| /* $begin rsum-ys */
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| # long rsum(long *start, long count)
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| # start in %rdi, count in %rsi
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0x056: | rsum:
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0x056: 6300 | xorq %rax,%rax # Set return value to 0
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0x058: 6266 | andq %rsi,%rsi # Set condition codes
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0x05a: 739400000000000000 | je return # If count == 0, return 0
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0x063: a03f | pushq %rbx # Save callee-saved register
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0x065: 50370000000000000000 | mrmovq (%rdi),%rbx # Get *start
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0x06f: 30faffffffffffffffff | irmovq $-1,%r10
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0x079: 60a6 | addq %r10,%rsi # count--
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0x07b: 30fa0800000000000000 | irmovq $8,%r10
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0x085: 60a7 | addq %r10,%rdi # start++
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0x087: 805600000000000000 | call rsum
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0x090: 6030 | addq %rbx,%rax # Add *start to sum
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0x092: b03f | popq %rbx # Restore callee-saved register
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0x094: | return:
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0x094: 90 | ret
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| /* $end rsum-ys */
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| # The stack starts here and grows to lower addresses
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0x200: | .pos 0x200
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0x200: | stack:
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