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MIPS: Add MIPS64 R6 port.

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Contributed by Hua Zhang, YunQiang Su from Wave Computing,
and Radovan Birdic from RT-RK.
Sponsored by Wave Computing.
This commit is contained in:
Mike Pall
2020-01-20 22:15:45 +01:00
parent dfa692b746
commit 94d0b53004
15 changed files with 1297 additions and 348 deletions
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15
src/lj_emit_mips.h
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@@ -138,6 +138,7 @@ static void emit_loadu64(ASMState *as, Reg r, uint64_t u64)
} else if (emit_kdelta1(as, r, (intptr_t)u64)) {
return;
} else {
/* TODO MIPSR6: Use DAHI & DATI. Caveat: sign-extension. */
if ((u64 & 0xffff)) {
emit_tsi(as, MIPSI_ORI, r, r, u64 & 0xffff);
}
@@ -236,10 +237,22 @@ static void emit_jmp(ASMState *as, MCode *target)
static void emit_call(ASMState *as, void *target, int needcfa)
{
MCode *p = as->mcp;
*--p = MIPSI_NOP;
#if LJ_TARGET_MIPSR6
ptrdiff_t delta = (char *)target - (char *)p;
if ((((delta>>2) + 0x02000000) >> 26) == 0) { /* Try compact call first. */
*--p = MIPSI_BALC | (((uintptr_t)delta >>2) & 0x03ffffffu);
as->mcp = p;
return;
}
#endif
*--p = MIPSI_NOP; /* Delay slot. */
if ((((uintptr_t)target ^ (uintptr_t)p) >> 28) == 0) {
#if !LJ_TARGET_MIPSR6
*--p = (((uintptr_t)target & 1) ? MIPSI_JALX : MIPSI_JAL) |
(((uintptr_t)target >>2) & 0x03ffffffu);
#else
*--p = MIPSI_JAL | (((uintptr_t)target >>2) & 0x03ffffffu);
#endif
} else { /* Target out of range: need indirect call. */
*--p = MIPSI_JALR | MIPSF_S(RID_CFUNCADDR);
needcfa = 1;