void UASM_i_LA(u32 **buf, unsigned int rs, long addr)
{
UASM_i_LA_mostly(buf, rs, addr);
if (uasm_rel_lo(addr)) {
if (!uasm_in_compat_space_p(addr))
uasm_i_daddiu(buf, rs, rs,
uasm_rel_lo(addr));
else
uasm_i_addiu(buf, rs, rs,
uasm_rel_lo(addr));
}
}
void UASM_i_LA_mostly(u32 **buf, unsigned int rs, long addr)
{
if (!uasm_in_compat_space_p(addr)) {
uasm_i_lui(buf, rs, uasm_rel_highest(addr));
if (uasm_rel_higher(addr))
uasm_i_daddiu(buf, rs, rs, uasm_rel_higher(addr));
if (uasm_rel_hi(addr)) {
uasm_i_dsll(buf, rs, rs, 16);
uasm_i_daddiu(buf, rs, rs,
uasm_rel_hi(addr));
uasm_i_dsll(buf, rs, rs, 16);
} else
uasm_i_dsll32(buf, rs, rs, 0);
} else
uasm_i_lui(buf, rs, uasm_rel_hi(addr));
}
/*
* BVADDR is the faulting address, PTR is scratch.
* PTR will hold the pgd for vmalloc.
*/
static __init void
build_get_pgd_vmalloc64(u32 **p, struct uasm_label **l, struct uasm_reloc **r,
unsigned int bvaddr, unsigned int ptr)
{
long swpd = (long)swapper_pg_dir;
#ifdef MODULE_START
long modd = (long)module_pg_dir;
uasm_l_module_alloc(l, *p);
/*
* Assumption:
* VMALLOC_START >= 0xc000000000000000UL
* MODULE_START >= 0xe000000000000000UL
*/
UASM_i_SLL(p, ptr, bvaddr, 2);
uasm_il_bgez(p, r, ptr, label_vmalloc);
if (uasm_in_compat_space_p(MODULE_START) &&
!uasm_rel_lo(MODULE_START)) {
uasm_i_lui(p, ptr, uasm_rel_hi(MODULE_START)); /* delay slot */
} else {
/* unlikely configuration */
uasm_i_nop(p); /* delay slot */
UASM_i_LA(p, ptr, MODULE_START);
}
uasm_i_dsubu(p, bvaddr, bvaddr, ptr);
if (uasm_in_compat_space_p(modd) && !uasm_rel_lo(modd)) {
uasm_il_b(p, r, label_vmalloc_done);
uasm_i_lui(p, ptr, uasm_rel_hi(modd));
} else {
UASM_i_LA_mostly(p, ptr, modd);
uasm_il_b(p, r, label_vmalloc_done);
if (uasm_in_compat_space_p(modd))
uasm_i_addiu(p, ptr, ptr, uasm_rel_lo(modd));
else
uasm_i_daddiu(p, ptr, ptr, uasm_rel_lo(modd));
}
uasm_l_vmalloc(l, *p);
if (uasm_in_compat_space_p(MODULE_START) &&
!uasm_rel_lo(MODULE_START) &&
MODULE_START << 32 == VMALLOC_START)
uasm_i_dsll32(p, ptr, ptr, 0); /* typical case */
else
UASM_i_LA(p, ptr, VMALLOC_START);
#else
uasm_l_vmalloc(l, *p);
UASM_i_LA(p, ptr, VMALLOC_START);
#endif
uasm_i_dsubu(p, bvaddr, bvaddr, ptr);
if (uasm_in_compat_space_p(swpd) && !uasm_rel_lo(swpd)) {
uasm_il_b(p, r, label_vmalloc_done);
uasm_i_lui(p, ptr, uasm_rel_hi(swpd));
} else {
UASM_i_LA_mostly(p, ptr, swpd);
uasm_il_b(p, r, label_vmalloc_done);
if (uasm_in_compat_space_p(swpd))
uasm_i_addiu(p, ptr, ptr, uasm_rel_lo(swpd));
else
uasm_i_daddiu(p, ptr, ptr, uasm_rel_lo(swpd));
}
}
