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| author | Alexander Graf <agraf@suse.de> | 2012-01-31 03:19:23 +0100 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2012-02-02 02:47:47 +0100 |
| commit | d5d11a39a8f761c99276f20974de2f25928830c1 (patch) | |
| tree | f506222b8885da4ee448e477ce42240c6a1833c1 /target-ppc | |
| parent | 9e0b5cb1ecf5543864fad0628a17be23bb617ed7 (diff) | |
| download | qemu-d5d11a39a8f761c99276f20974de2f25928830c1.zip qemu-d5d11a39a8f761c99276f20974de2f25928830c1.tar.gz qemu-d5d11a39a8f761c99276f20974de2f25928830c1.tar.bz2 | |
PPC: E500: Implement msgsnd
This patch implements the msgsnd instruction. It is part of the
Embedded.Processor Control specification and allows one CPU to
IPI another CPU without going through an interrupt controller.
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc')
| -rw-r--r-- | target-ppc/helper.h | 1 | ||||
| -rw-r--r-- | target-ppc/op_helper.c | 18 | ||||
| -rw-r--r-- | target-ppc/translate.c | 16 |
3 files changed, 35 insertions, 0 deletions
diff --git a/target-ppc/helper.h b/target-ppc/helper.h index 48ceb61..148543a 100644 --- a/target-ppc/helper.h +++ b/target-ppc/helper.h @@ -358,6 +358,7 @@ DEF_HELPER_FLAGS_1(load_sr, TCG_CALL_CONST, tl, tl); DEF_HELPER_FLAGS_2(store_sr, TCG_CALL_CONST, void, tl, tl) DEF_HELPER_FLAGS_1(602_mfrom, TCG_CALL_CONST | TCG_CALL_PURE, tl, tl) +DEF_HELPER_1(msgsnd, void, tl) DEF_HELPER_1(msgclr, void, tl) #endif diff --git a/target-ppc/op_helper.c b/target-ppc/op_helper.c index e2f7614..3f4e067 100644 --- a/target-ppc/op_helper.c +++ b/target-ppc/op_helper.c @@ -4549,4 +4549,22 @@ void helper_msgclr(target_ulong rb) env->pending_interrupts &= ~(1 << irq); } +void helper_msgsnd(target_ulong rb) +{ + int irq = dbell2irq(rb); + int pir = rb & DBELL_PIRTAG_MASK; + CPUState *cenv; + + if (irq < 0) { + return; + } + + for (cenv = first_cpu; cenv != NULL; cenv = cenv->next_cpu) { + if ((rb & DBELL_BRDCAST) || (cenv->spr[SPR_BOOKE_PIR] == pir)) { + cenv->pending_interrupts |= 1 << irq; + cpu_interrupt(cenv, CPU_INTERRUPT_HARD); + } + } +} + #endif /* !CONFIG_USER_ONLY */ diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 01bfe0a..b2780db 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -6236,6 +6236,20 @@ static void gen_msgclr(DisasContext *ctx) #endif } +static void gen_msgsnd(DisasContext *ctx) +{ +#if defined(CONFIG_USER_ONLY) + gen_inval_exception(ctx, POWERPC_EXCP_PRIV_OPC); +#else + if (unlikely(ctx->mem_idx == 0)) { + gen_inval_exception(ctx, POWERPC_EXCP_PRIV_OPC); + return; + } + + gen_helper_msgsnd(cpu_gpr[rB(ctx->opcode)]); +#endif +} + /*** Altivec vector extension ***/ /* Altivec registers moves */ @@ -8626,6 +8640,8 @@ GEN_HANDLER2_E(tlbivax_booke206, "tlbivax", 0x1F, 0x12, 0x18, 0x00000001, PPC_NONE, PPC2_BOOKE206), GEN_HANDLER2_E(tlbilx_booke206, "tlbilx", 0x1F, 0x12, 0x00, 0x03800001, PPC_NONE, PPC2_BOOKE206), +GEN_HANDLER2_E(msgsnd, "msgsnd", 0x1F, 0x0E, 0x06, 0x03ff0001, + PPC_NONE, PPC2_PRCNTL), GEN_HANDLER2_E(msgclr, "msgclr", 0x1F, 0x0E, 0x07, 0x03ff0001, PPC_NONE, PPC2_PRCNTL), GEN_HANDLER(wrtee, 0x1F, 0x03, 0x04, 0x000FFC01, PPC_WRTEE), |