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String buffers, part 3c: Add IRBUFHDR_WRITE mode.

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Sponsored by fmad.io.
This commit is contained in:
Mike Pall
2021-07-19 16:41:29 +02:00
parent 1d5ef35fed
commit 02bcbea8b0
14 changed files with 112 additions and 5 deletions
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21
src/lj_asm_mips.h
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@@ -465,6 +465,27 @@ static void asm_retf(ASMState *as, IRIns *ir)
emit_tsi(as, MIPSI_AL, RID_TMP, base, -8);
}
/* -- Buffer operations --------------------------------------------------- */
#if LJ_HASBUFFER
static void asm_bufhdr_write(ASMState *as, Reg sb)
{
Reg tmp = ra_scratch(as, rset_exclude(RSET_GPR, sb));
IRIns irgc;
irgc.ot = IRT(0, IRT_PGC); /* GC type. */
emit_storeofs(as, &irgc, RID_TMP, sb, offsetof(SBuf, L));
if ((as->flags & JIT_F_MIPSXXR2)) {
emit_tsml(as, LJ_64 ? MIPSI_DINS : MIPSI_INS, RID_TMP, tmp,
lj_fls(SBUF_MASK_FLAG), 0);
} else {
emit_dst(as, MIPSI_OR, RID_TMP, RID_TMP, tmp);
emit_tsi(as, MIPSI_ANDI, tmp, tmp, SBUF_MASK_FLAG);
}
emit_getgl(as, RID_TMP, cur_L);
emit_loadofs(as, &irgc, tmp, sb, offsetof(SBuf, L));
}
#endif
/* -- Type conversions ---------------------------------------------------- */
#if !LJ_SOFTFP