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PPC: E500: Implement msgclr 

This patch implements the msgclr instruction. It is part of the
Embedded.Processor Control specification and clears pending doorbell
interrupts on the current CPU.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2012-01-31 03:18:35 +01:00
parent a9abd71770
commit 9e0b5cb1ec
3 changed files with 54 additions and 0 deletions
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1
target-ppc/helper.h
View File

@ -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(msgclr, void, tl)
#endif
DEF_HELPER_3(dlmzb, tl, tl, tl, i32)

35
target-ppc/op_helper.c
View File

@ -4514,4 +4514,39 @@ void helper_booke206_tlbflush(uint32_t type)
booke206_flush_tlb(env, flags, 1);
}
/* Embedded.Processor Control */
static int dbell2irq(target_ulong rb)
{
int msg = rb & DBELL_TYPE_MASK;
int irq = -1;
switch (msg) {
case DBELL_TYPE_DBELL:
irq = PPC_INTERRUPT_DOORBELL;
break;
case DBELL_TYPE_DBELL_CRIT:
irq = PPC_INTERRUPT_CDOORBELL;
break;
case DBELL_TYPE_G_DBELL:
case DBELL_TYPE_G_DBELL_CRIT:
case DBELL_TYPE_G_DBELL_MC:
/* XXX implement */
default:
break;
}
return irq;
}
void helper_msgclr(target_ulong rb)
{
int irq = dbell2irq(rb);
if (irq < 0) {
return;
}
env->pending_interrupts &= ~(1 << irq);
}
#endif /* !CONFIG_USER_ONLY */

18
target-ppc/translate.c
View File

@ -6220,6 +6220,22 @@ static void gen_icbt_440(DisasContext *ctx)
*/
}
/* Embedded.Processor Control */
static void gen_msgclr(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_msgclr(cpu_gpr[rB(ctx->opcode)]);
#endif
}
/*** Altivec vector extension ***/
/* Altivec registers moves */
@ -8610,6 +8626,8 @@ 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(msgclr, "msgclr", 0x1F, 0x0E, 0x07, 0x03ff0001,
PPC_NONE, PPC2_PRCNTL),
GEN_HANDLER(wrtee, 0x1F, 0x03, 0x04, 0x000FFC01, PPC_WRTEE),
GEN_HANDLER(wrteei, 0x1F, 0x03, 0x05, 0x000E7C01, PPC_WRTEE),
GEN_HANDLER(dlmzb, 0x1F, 0x0E, 0x02, 0x00000000, PPC_440_SPEC),