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Line 1... |
;
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;
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; hello.s -- Hello, world!
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; hello.s -- Hello, world!
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;
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;
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.set tba,0xF0300000 ; terminal base address
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.set tba,0xF0300000 ; terminal base address
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.set tos,0xC0010000 ; top of stack
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.set tos,0xC0020000 ; top of stack
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; get some addresses listed in the load map
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; get some addresses listed in the load map
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.export reset
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.export start
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.export start
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.export main
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.export out
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.export out
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.export hello
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.export hello
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; minimal execution environment
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; minimal execution environment
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reset:
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start:
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add $29,$0,tos ; setup stack
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add $29,$0,tos ; setup stack
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jal start ; do useful work
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jal main ; do useful work
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reset1:
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start1:
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j reset1 ; halt by looping
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j start1 ; halt by looping
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; main program
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; main program
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start:
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main:
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sub $29,$29,8 ; create stack frame
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sub $29,$29,8 ; create stack frame
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stw $31,$29,0 ; save return register
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stw $31,$29,0 ; save return register
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stw $16,$29,4 ; save register variable
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stw $16,$29,4 ; save register variable
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add $16,$0,hello ; pointer to string
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add $16,$0,hello ; pointer to string
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loop:
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loop:
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