mirror of
https://github.com/pkivolowitz/asm_book.git
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93 lines
1.9 KiB
ArmAsm
93 lines
1.9 KiB
ArmAsm
/* A test program. Tests MIN and MAX
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*/
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#include "apple-linux-convergence.S"
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.text
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.align 2
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GLABEL main
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MAIN
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START_PROC
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PUSH_P x29, x30
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PUSH_P x20, x21
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mov x29, sp
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// Generate two numbers to compare.
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mov x0, xzr
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CRT time // time(nullptr)
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CRT srand
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CRT rand
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and x20, x0, 0xFF
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CRT rand
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and x21, x0, 0xFF
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bl PrintLegend
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bl DoMin
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bl DoMax
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POP_P x20, x21
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POP_P x29, x30
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mov w0, wzr
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ret
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END_PROC
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DoMin:
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START_PROC
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PUSH_P x29, x30
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mov x29, sp
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LLD_ADDR x0, fmtls
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MIN x20, x21, x1
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#if defined(__APPLE__)
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PUSH_R x1
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CRT printf
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add sp, sp, 16
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#else
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CRT printf
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#endif
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POP_P x29, x30
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ret
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END_PROC
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DoMax:
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START_PROC
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PUSH_P x29, x30
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mov x29, sp
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LLD_ADDR x0, fmtgt
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MAX x20, x21, x1
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#if defined(__APPLE__)
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PUSH_R x1
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CRT printf
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add sp, sp, 16
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#else
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CRT printf
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#endif
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POP_P x29, x30
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ret
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END_PROC
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PrintLegend:
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START_PROC
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PUSH_P x29, x30
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mov x29, sp
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LLD_ADDR x0, fmt
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#if defined(__APPLE__)
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PUSH_P x20, x21
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CRT printf
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add sp, sp, 16
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#else
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mov x1, x20
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mov x2, x21
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CRT printf
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#endif
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POP_P x29, x30
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ret
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END_PROC
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AASCIZ fmt, "Values to compare: %d and %d\n"
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AASCIZ fmtgt, "Greater value is: %d\n"
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AASCIZ fmtls, "Lesser value is: %d\n"
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.end
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