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bsps/powerpc/virtex4/start/mmu.c: Address type-limits warnings

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These changes were made to address GCC -Wtype-limits warnings.
In this case, the "sz" was always >= 0 as it was unsigned.
This commit is contained in:
Joel Sherrill
2025-11-24 17:42:51 -06:00
committed by Gedare Bloom
parent 5fed67781c
commit ba5ebfc3c7
1 changed files with 15 additions and 12 deletions
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27
bsps/powerpc/virtex4/start/mmu.c
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@@ -387,23 +387,26 @@ bsp_mmu_write(bsp_tlb_idx_t idx, uint32_t ea, uint32_t pa, uint sz,
return -1;
}
if ( sz >=0 ) {
lkup = bsp_mmu_match(ea, sz, tid);
/*
* The GCC warning -Wtype-limits flagged that (sz >= 0) was not needed
* because sz is unsigned. It is always >= 0.
*/
if ( lkup < -1 ) {
/* some error */
return lkup;
}
if ( (lkup >= 0) && (lkup != idx) && (bsp_mmu_cache[lkup].hi.v != 0) ) {
myprintf(stderr,"TLB #%i overlaps with requested mapping\n", lkup);
bsp_mmu_update( lkup, false, stderr);
return lkup+1;
}
lkup = bsp_mmu_match(ea, sz, tid);
if ( lkup < -1 ) {
/* some error */
return lkup;
}
if ( (lkup >= 0) && (lkup != idx) && (bsp_mmu_cache[lkup].hi.v != 0) ) {
myprintf(stderr,"TLB #%i overlaps with requested mapping\n", lkup);
bsp_mmu_update( lkup, false, stderr);
return lkup+1;
}
/* OK to proceed */
tlb.id.tid = tid;
tlb.hi.v = sz >= 0;
tlb.hi.v = 1; /* sz always >= 0 */
tlb.hi.size = sz;
tlb.hi.epn = (ea & (0xfffffc00 << (sz + sz))) >> 10;
tlb.lo.rpn = (pa & (0xfffffc00 << (sz + sz))) >> 10;