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LoongArch64: Add FFI support in the interpreter

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Co-developed-by: Qiqi Huang <huangqiqi@loongson.cn>
This commit is contained in:
Xiaolin Zhao 2022-07-27 18:28:46 +08:00
parent 84b3306e60
commit b76aba86c8
1 changed files with 71 additions and 0 deletions
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71
src/vm_loongarch64.dasc
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@ -687,15 +687,29 @@ static void build_subroutines(BuildCtx *ctx)
| or RB, BASE, r0
| or BASE, TMP2, r0 // Restore caller BASE.
| ld.d LFUNC:TMP1, FRAME_FUNC(TMP2)
|.if FFI
| sltui TMP3, TMP0, 2
|.endif
| ld.d PC, -24(RB) // Restore PC from [cont|PC].
| cleartp LFUNC:TMP1
| add.d TMP2, RA, RD
| ld.d TMP1, LFUNC:TMP1->pc
| st.d TISNIL, -8(TMP2) // Ensure one valid arg.
|.if FFI
| bnez TMP3, >1
|.endif
| // BASE = base, RA = resultptr, RB = meta base
| ld.d KBASE, PC2PROTO(k)(TMP1)
| jirl r0, TMP0, 0 // Jump to continuation.
|
|.if FFI
|1:
| addi.d TMP1, RB, -32
| bnez TMP0, ->cont_ffi_callback // cont = 1: return from FFI callback.
| // cont = 0: tailcall from C function.
| sub.d RC, TMP1, BASE
| b ->vm_call_tail
|.endif
|
|->cont_cat: // RA = resultptr, RB = meta base
| ld.w INS, -4(PC)
@ -889,6 +903,17 @@ static void build_subroutines(BuildCtx *ctx)
| // Returns 0/1 or TValue * (metamethod).
| b <3
|
|->vmeta_equal_cd:
|.if FFI
| or CARG2, INS, r0
| addi.d PC, PC, -4
| st.d BASE, L->base
| or CARG1, L, r0
| st.d PC, SAVE_PC(sp)
| bl extern lj_meta_equal_cd // (lua_State *L, BCIns op)
| // Returns 0/1 or TValue * (metamethod).
| b <3
|.endif
|
|->vmeta_istype:
| addi.d PC, PC, -4
@ -2617,6 +2642,12 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
| beqz TMP0, ->BC_ISNEN_Z
}
|// Either or both types are not numbers.
|.if FFI
| // Check if RA or RD is a cdata.
| addi.w TMP0, r0, LJ_TCDATA
| beq CARG3, TMP0, ->vmeta_equal_cd
| beq CARG4, TMP0, ->vmeta_equal_cd
|.endif
| addu16i.d TMP3, r0, -0x2 // -BCBIAS_J*4
| decode_BC4b TMP2
| add.w TMP2, TMP2, TMP3 // (jump-0x8000)<<2
@ -2667,10 +2698,17 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
| sub.d RD, KBASE, RD
| ld.hu TMP2, -4+OFS_RD(PC)
| ld.d CARG2, -8(RD) // KBASE-8-str_const*8
|.if FFI
| gettp CARG3, CARG1
| addi.w TMP1, r0, LJ_TCDATA
|.endif
| addi.w TMP0, r0, LJ_TSTR
| decode_BC4b TMP2
| settp CARG2, TMP0
| addu16i.d TMP3, r0, -0x2 // -BCBIAS_J*4
|.if FFI
| beq CARG3, TMP1, ->vmeta_equal_cd
|.endif
| xor TMP0, CARG1, CARG2 // TMP2=0: A==D; TMP2!=0: A!=D
| add.w TMP2, TMP2, TMP3
if (vk) {
@ -2720,7 +2758,11 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
|4: // RA is not an integer.
| sltu TMP0, CARG3, TISNUM
| add.w TMP2, TMP2, TMP3
|.if FFI
| beqz TMP0, >7
|.else
| beqz TMP0, <2
|.endif
| movgr2fr.d FTMP0, CARG1
| movgr2fr.d FTMP2, CARG2
| bne CARG4, TISNUM, >5
@ -2734,12 +2776,27 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
|
|6: // RA is an integer, RD is a number.
| sltu TMP0, CARG4, TISNUM
|.if FFI
| beqz TMP0, >8
|.else
| beqz TMP0, <2
|.endif
| movgr2fr.w FTMP0, CARG1
| movgr2fr.d FTMP2, CARG2
| ffint.d.w FTMP0, FTMP0
| b <5
|
|.if FFI
|7: // RA not int, not number
| addi.w TMP0, r0, LJ_TCDATA
| bne CARG3, TMP0, <2
| b ->vmeta_equal_cd
|
|8: // RD not int, not number
| addi.w TMP0, r0, LJ_TCDATA
| bne CARG4, TMP0, <2
| b ->vmeta_equal_cd
|.endif
break;
case BC_ISEQP: case BC_ISNEP:
@ -2753,6 +2810,10 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
| gettp TMP1, TMP1
| addi.d PC, PC, 4
| xor TMP0, TMP1, TMP0 // TMP0=0 A=D; TMP0!=0 A!=D
|.if FFI
| addi.w TMP3, r0, LJ_TCDATA
| beq TMP1, TMP3, ->vmeta_equal_cd
|.endif
| decode_BC4b TMP2
| addu16i.d TMP3, r0, -0x2 // -BCBIAS_J*4
| add.w TMP2, TMP2, TMP3 // TMP2=(jump-0x8000)<<2
@ -3086,6 +3147,16 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
| ins_next
break;
case BC_KCDATA:
|.if FFI
| // RA = dst*8, RD = cdata_const*8 (~)
| sub.d TMP1, KBASE, RD
| ld.d TMP0, -8(TMP1) // KBASE-8-cdata_const*8
| addi.w TMP2, r0, LJ_TCDATA
| add.d RA, BASE, RA
| settp TMP0, TMP2
| st.d TMP0, 0(RA)
| ins_next
|.endif
break;
case BC_KSHORT:
| // RA = dst*8, RD = int16_literal*8