42 lines
963 B
C
42 lines
963 B
C
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#include "mcg.h"
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struct hop* platform_prologue(struct procedure* proc)
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{
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int framesize = proc->nlocals + 8;
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int retbase = proc->nlocals;
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struct hop* hop = new_hop(proc->entry, NULL);
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hop_add_insel(hop, "addi sp, fp, %d", -framesize);
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hop_add_insel(hop, "mfspr 0, lr");
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hop_add_insel(hop, "stw fp, %d(sp)", retbase);
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hop_add_insel(hop, "stw 0, %d(sp)", retbase+4);
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hop_add_insel(hop, "addi fp, sp, retbase");
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return hop;
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}
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struct hop* platform_epilogue(struct procedure* proc)
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{
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struct hop* hop = new_hop(proc->exit, NULL);
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hop_add_insel(hop, "b .ret");
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return hop;
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}
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struct hop* platform_move(struct basicblock* bb, struct hreg* src, struct hreg* dest)
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{
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struct hop* hop = new_hop(bb, NULL);
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if ((src->type & burm_int_ATTR) && (dest->type & burm_int_ATTR))
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hop_add_insel(hop, "mr %H, %H", dest, src);
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else
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fatal("cannot generate move from %s to %s", src->name, dest->name);
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return hop;
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}
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/* vim: set sw=4 ts=4 expandtab : */
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