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| author | Aurelien Jarno <aurelien@aurel32.net> | 2013-04-20 08:56:20 +0000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2013-04-26 23:02:43 +0200 |
| commit | 05050ee8049f9fe75ffcac4a5aa053b5631653bf (patch) | |
| tree | 4176e0515d9c27eb213212a4b5fba48d27ae210a /target-ppc | |
| parent | 199f830d19576c77a5ed8fec81c218258d73f1dd (diff) | |
| download | qemu-05050ee8049f9fe75ffcac4a5aa053b5631653bf.tar.gz qemu-05050ee8049f9fe75ffcac4a5aa053b5631653bf.tar.bz2 qemu-05050ee8049f9fe75ffcac4a5aa053b5631653bf.zip | |
target-ppc: emulate load doubleword pair instructions
Needed for Power ISA version 2.05 compliance. The check for odd register
pairs is done using the invalid bits.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc')
| -rw-r--r-- | target-ppc/translate.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 228c695288..40b6162716 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -3300,6 +3300,52 @@ GEN_LDFS(lfd, ld64, 0x12, PPC_FLOAT); /* lfs lfsu lfsux lfsx */ GEN_LDFS(lfs, ld32fs, 0x10, PPC_FLOAT); +/* lfdp */ +static void gen_lfdp(DisasContext *ctx) +{ + TCGv EA; + if (unlikely(!ctx->fpu_enabled)) { + gen_exception(ctx, POWERPC_EXCP_FPU); + return; + } + gen_set_access_type(ctx, ACCESS_FLOAT); + EA = tcg_temp_new(); + gen_addr_imm_index(ctx, EA, 0); \ + if (unlikely(ctx->le_mode)) { + gen_qemu_ld64(ctx, cpu_fpr[rD(ctx->opcode) + 1], EA); + tcg_gen_addi_tl(EA, EA, 8); + gen_qemu_ld64(ctx, cpu_fpr[rD(ctx->opcode)], EA); + } else { + gen_qemu_ld64(ctx, cpu_fpr[rD(ctx->opcode)], EA); + tcg_gen_addi_tl(EA, EA, 8); + gen_qemu_ld64(ctx, cpu_fpr[rD(ctx->opcode) + 1], EA); + } + tcg_temp_free(EA); +} + +/* lfdpx */ +static void gen_lfdpx(DisasContext *ctx) +{ + TCGv EA; + if (unlikely(!ctx->fpu_enabled)) { + gen_exception(ctx, POWERPC_EXCP_FPU); + return; + } + gen_set_access_type(ctx, ACCESS_FLOAT); + EA = tcg_temp_new(); + gen_addr_reg_index(ctx, EA); + if (unlikely(ctx->le_mode)) { + gen_qemu_ld64(ctx, cpu_fpr[rD(ctx->opcode) + 1], EA); + tcg_gen_addi_tl(EA, EA, 8); + gen_qemu_ld64(ctx, cpu_fpr[rD(ctx->opcode)], EA); + } else { + gen_qemu_ld64(ctx, cpu_fpr[rD(ctx->opcode)], EA); + tcg_gen_addi_tl(EA, EA, 8); + gen_qemu_ld64(ctx, cpu_fpr[rD(ctx->opcode) + 1], EA); + } + tcg_temp_free(EA); +} + /* lfiwax */ static void gen_lfiwax(DisasContext *ctx) { @@ -9035,6 +9081,8 @@ GEN_LDXF(name, ldop, 0x17, op | 0x00, type) GEN_LDFS(lfd, ld64, 0x12, PPC_FLOAT) GEN_LDFS(lfs, ld32fs, 0x10, PPC_FLOAT) GEN_HANDLER_E(lfiwax, 0x1f, 0x17, 0x1a, 0x00000001, PPC_NONE, PPC2_ISA205), +GEN_HANDLER_E(lfdp, 0x39, 0xFF, 0xFF, 0x00200003, PPC_NONE, PPC2_ISA205), +GEN_HANDLER_E(lfdpx, 0x1F, 0x17, 0x18, 0x00200001, PPC_NONE, PPC2_ISA205), #undef GEN_STF #undef GEN_STUF |