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| author | Balamuruhan S <bala24@linux.vnet.ibm.com> | 2017-02-09 11:03:31 +0530 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2017-02-22 11:28:27 +1100 |
| commit | a34011881c433c759d0fc964614a7d26b0824b24 (patch) | |
| tree | ea17b5263862e183e028ae48ee49b7b9ba2a398e /target/ppc/translate.c | |
| parent | a68a6146738c524ce5ed0d379501b2797d689c0d (diff) | |
| download | qemu-a34011881c433c759d0fc964614a7d26b0824b24.tar.gz | |
target-ppc: implement store atomic instruction
stwat: Store Word Atomic
stdat: Store Doubleword Atomic
The instruction includes as function code (5 bits) which gives a detail
on the operation to be performed. The patch implements five such
functions.
Signed-off-by: Balamuruhan S <bala24@linux.vnet.ibm.com>
Signed-off-by: Harish S <harisrir@linux.vnet.ibm.com>
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
[ implement stdat, use macro and combine both implementation ]
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'target/ppc/translate.c')
| -rw-r--r-- | target/ppc/translate.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/target/ppc/translate.c b/target/ppc/translate.c index ea2ec44059..255735a97a 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -3033,6 +3033,56 @@ LD_ATOMIC(lwat, DEF_MEMOP(MO_UL), i32, trunc_tl_i32, extu_i32_tl) LD_ATOMIC(ldat, DEF_MEMOP(MO_Q), i64, mov_i64, mov_i64) #endif +#define ST_ATOMIC(name, memop, tp, op) \ +static void gen_##name(DisasContext *ctx) \ +{ \ + int len = MEMOP_GET_SIZE(memop); \ + uint32_t gpr_FC = FC(ctx->opcode); \ + TCGv EA = tcg_temp_local_new(); \ + TCGv_##tp t0, t1; \ + \ + gen_addr_register(ctx, EA); \ + if (len > 1) { \ + gen_check_align(ctx, EA, len - 1); \ + } \ + t0 = tcg_temp_new_##tp(); \ + t1 = tcg_temp_new_##tp(); \ + tcg_gen_##op(t0, cpu_gpr[rD(ctx->opcode) + 1]); \ + \ + switch (gpr_FC) { \ + case 0: /* add and Store */ \ + tcg_gen_atomic_add_fetch_##tp(t1, EA, t0, ctx->mem_idx, memop); \ + break; \ + case 1: /* xor and Store */ \ + tcg_gen_atomic_xor_fetch_##tp(t1, EA, t0, ctx->mem_idx, memop); \ + break; \ + case 2: /* Or and Store */ \ + tcg_gen_atomic_or_fetch_##tp(t1, EA, t0, ctx->mem_idx, memop); \ + break; \ + case 3: /* 'and' and Store */ \ + tcg_gen_atomic_and_fetch_##tp(t1, EA, t0, ctx->mem_idx, memop); \ + break; \ + case 4: /* Store max unsigned */ \ + case 5: /* Store max signed */ \ + case 6: /* Store min unsigned */ \ + case 7: /* Store min signed */ \ + case 24: /* Store twin */ \ + gen_invalid(ctx); \ + break; \ + default: \ + /* invoke data storage error handler */ \ + gen_exception_err(ctx, POWERPC_EXCP_DSI, POWERPC_EXCP_INVAL); \ + } \ + tcg_temp_free_##tp(t0); \ + tcg_temp_free_##tp(t1); \ + tcg_temp_free(EA); \ +} + +ST_ATOMIC(stwat, DEF_MEMOP(MO_UL), i32, trunc_tl_i32) +#if defined(TARGET_PPC64) +ST_ATOMIC(stdat, DEF_MEMOP(MO_Q), i64, mov_i64) +#endif + #if defined(CONFIG_USER_ONLY) static void gen_conditional_store(DisasContext *ctx, TCGv EA, int reg, int memop) @@ -6288,11 +6338,13 @@ GEN_HANDLER_E(lbarx, 0x1F, 0x14, 0x01, 0, PPC_NONE, PPC2_ATOMIC_ISA206), GEN_HANDLER_E(lharx, 0x1F, 0x14, 0x03, 0, PPC_NONE, PPC2_ATOMIC_ISA206), GEN_HANDLER(lwarx, 0x1F, 0x14, 0x00, 0x00000000, PPC_RES), GEN_HANDLER_E(lwat, 0x1F, 0x06, 0x12, 0x00000001, PPC_NONE, PPC2_ISA300), +GEN_HANDLER_E(stwat, 0x1F, 0x06, 0x16, 0x00000001, PPC_NONE, PPC2_ISA300), GEN_HANDLER_E(stbcx_, 0x1F, 0x16, 0x15, 0, PPC_NONE, PPC2_ATOMIC_ISA206), GEN_HANDLER_E(sthcx_, 0x1F, 0x16, 0x16, 0, PPC_NONE, PPC2_ATOMIC_ISA206), GEN_HANDLER2(stwcx_, "stwcx.", 0x1F, 0x16, 0x04, 0x00000000, PPC_RES), #if defined(TARGET_PPC64) GEN_HANDLER_E(ldat, 0x1F, 0x06, 0x13, 0x00000001, PPC_NONE, PPC2_ISA300), +GEN_HANDLER_E(stdat, 0x1F, 0x06, 0x17, 0x00000001, PPC_NONE, PPC2_ISA300), GEN_HANDLER(ldarx, 0x1F, 0x14, 0x02, 0x00000000, PPC_64B), GEN_HANDLER_E(lqarx, 0x1F, 0x14, 0x08, 0, PPC_NONE, PPC2_LSQ_ISA207), GEN_HANDLER2(stdcx_, "stdcx.", 0x1F, 0x16, 0x06, 0x00000000, PPC_64B), |