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| author | Tom Musta <tommusta@gmail.com> | 2014-02-10 11:27:00 -0600 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-03-05 03:06:50 +0100 |
| commit | 9c294d5ab3eac0e600fa510becfa677d87b088bf (patch) | |
| tree | 28c3b03f38c460847904541b3ab2c88116efb59a /target-ppc/translate.c | |
| parent | 84cab1e2f5be3ea6eaa65c9fc0422fb992946ce0 (diff) | |
| download | qemu-9c294d5ab3eac0e600fa510becfa677d87b088bf.zip qemu-9c294d5ab3eac0e600fa510becfa677d87b088bf.tar.gz qemu-9c294d5ab3eac0e600fa510becfa677d87b088bf.tar.bz2 | |
target-ppc: Add Load Quadword and Reserve
This patch adds the Load Quadword and Reserve (lqarx) instruction,
which is new in Power ISA 2.07.
Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc/translate.c')
| -rw-r--r-- | target-ppc/translate.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 72eff90..13c9802 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -3359,6 +3359,42 @@ STCX(stwcx_, 4); /* ldarx */ LARX(ldarx, 8, ld64); +/* lqarx */ +static void gen_lqarx(DisasContext *ctx) +{ + TCGv EA; + int rd = rD(ctx->opcode); + TCGv gpr1, gpr2; + + if (unlikely((rd & 1) || (rd == rA(ctx->opcode)) || + (rd == rB(ctx->opcode)))) { + gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL); + return; + } + + gen_set_access_type(ctx, ACCESS_RES); + EA = tcg_temp_local_new(); + gen_addr_reg_index(ctx, EA); + gen_check_align(ctx, EA, 15); + if (unlikely(ctx->le_mode)) { + gpr1 = cpu_gpr[rd+1]; + gpr2 = cpu_gpr[rd]; + } else { + gpr1 = cpu_gpr[rd]; + gpr2 = cpu_gpr[rd+1]; + } + gen_qemu_ld64(ctx, gpr1, EA); + tcg_gen_mov_tl(cpu_reserve, EA); + + gen_addr_add(ctx, EA, EA, 8); + gen_qemu_ld64(ctx, gpr2, EA); + + tcg_gen_st_tl(gpr1, cpu_env, offsetof(CPUPPCState, reserve_val)); + tcg_gen_st_tl(gpr2, cpu_env, offsetof(CPUPPCState, reserve_val2)); + + tcg_temp_free(EA); +} + /* stdcx. */ STCX(stdcx_, 8); #endif /* defined(TARGET_PPC64) */ @@ -9623,6 +9659,7 @@ 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(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), #endif GEN_HANDLER(sync, 0x1F, 0x16, 0x12, 0x039FF801, PPC_MEM_SYNC), |