diff options
| author | Tom Musta <tommusta@gmail.com> | 2014-02-10 11:26:58 -0600 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-03-05 03:06:50 +0100 |
| commit | e0498daab50d42f3948fc5607683c971fe9416fd (patch) | |
| tree | 82858742f7a1249865ea3317ba0174bbb6233340 /target-ppc | |
| parent | 71a8c019c445377f0dd04881cbd7c7dfb6ff3e5c (diff) | |
target-ppc: Load Quadword
This patch adds the Book I (user space) Load Quadword (lq) instruction.
This instruction was introduced into Book I in Power ISA V2.07. Previous
versions of the architecture supported this as a privileged instruction.
Previous versions of the architecture also did not support Little Endian
mode.
Note that this patch also adds the PPC_64BX flag to the Power8 model,
which enables the lq instruction.
Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc')
| -rw-r--r-- | target-ppc/translate.c | 36 | ||||
| -rw-r--r-- | target-ppc/translate_init.c | 2 |
2 files changed, 23 insertions, 15 deletions
diff --git a/target-ppc/translate.c b/target-ppc/translate.c index f6ff248ea2..06372b9d6b 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -2872,36 +2872,44 @@ static void gen_ld(DisasContext *ctx) /* lq */ static void gen_lq(DisasContext *ctx) { -#if defined(CONFIG_USER_ONLY) - gen_inval_exception(ctx, POWERPC_EXCP_PRIV_OPC); -#else int ra, rd; TCGv EA; - /* Restore CPU state */ - if (unlikely(ctx->mem_idx == 0)) { + /* lq is a legal user mode instruction starting in ISA 2.07 */ + bool legal_in_user_mode = (ctx->insns_flags2 & PPC2_LSQ_ISA207) != 0; + bool le_is_supported = (ctx->insns_flags2 & PPC2_LSQ_ISA207) != 0; + + if (!legal_in_user_mode && is_user_mode(ctx)) { gen_inval_exception(ctx, POWERPC_EXCP_PRIV_OPC); return; } + + if (!le_is_supported && ctx->le_mode) { + gen_exception_err(ctx, POWERPC_EXCP_ALIGN, POWERPC_EXCP_ALIGN_LE); + return; + } + ra = rA(ctx->opcode); rd = rD(ctx->opcode); if (unlikely((rd & 1) || rd == ra)) { gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL); return; } - if (unlikely(ctx->le_mode)) { - /* Little-endian mode is not handled */ - gen_exception_err(ctx, POWERPC_EXCP_ALIGN, POWERPC_EXCP_ALIGN_LE); - return; - } + gen_set_access_type(ctx, ACCESS_INT); EA = tcg_temp_new(); gen_addr_imm_index(ctx, EA, 0x0F); - gen_qemu_ld64(ctx, cpu_gpr[rd], EA); - gen_addr_add(ctx, EA, EA, 8); - gen_qemu_ld64(ctx, cpu_gpr[rd+1], EA); + + if (unlikely(ctx->le_mode)) { + gen_qemu_ld64(ctx, cpu_gpr[rd+1], EA); + gen_addr_add(ctx, EA, EA, 8); + gen_qemu_ld64(ctx, cpu_gpr[rd], EA); + } else { + gen_qemu_ld64(ctx, cpu_gpr[rd], EA); + gen_addr_add(ctx, EA, EA, 8); + gen_qemu_ld64(ctx, cpu_gpr[rd+1], EA); + } tcg_temp_free(EA); -#endif } #endif diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c index 64f56de9ce..b9576aca48 100644 --- a/target-ppc/translate_init.c +++ b/target-ppc/translate_init.c @@ -7165,7 +7165,7 @@ POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data) PPC_CACHE | PPC_CACHE_ICBI | PPC_CACHE_DCBZ | PPC_MEM_SYNC | PPC_MEM_EIEIO | PPC_MEM_TLBIE | PPC_MEM_TLBSYNC | - PPC_64B | PPC_ALTIVEC | + PPC_64B | PPC_64BX | PPC_ALTIVEC | PPC_SEGMENT_64B | PPC_SLBI | PPC_POPCNTB | PPC_POPCNTWD; pcc->insns_flags2 = PPC2_VSX | PPC2_VSX207 | PPC2_DFP | PPC2_DBRX | |