34 lines
621 B
ArmAsm
34 lines
621 B
ArmAsm
/*
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* startprog(entry, stack, argc, argv, prom_magic, prom_ptr, bi_magic, bi_ptr);
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*
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* load new stack pointer, then call
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* entry(argc, argv, prom_magic, prom_ptr, bi_magic, bi_ptr);
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*/
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#include <mips/asm.h>
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LEAF(startprog)
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subu sp,sp,32
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addu t0,a1,-CALLFRAME_SIZ # new stack value
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move t1,a0
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move a0,a2
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move a1,a3
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lw a2,48(sp) # load everything from old stack we need
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lw a3,52(sp)
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lw v0,56(sp)
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lw v1,60(sp)
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move sp,t0 # new stack pointer
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sw ra,24(sp)
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sw v0,16(sp)
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sw v1,20(sp)
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jal ra,t1
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nop # BDslot
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lw ra,24(sp) # should not get back here!
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j ra
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addu sp,sp,32
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END(startprog)
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