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ppc: Don't update NIP in dcbz and lscbx 

Instead, pass GETPC() result to the corresponding helpers.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Benjamin Herrenschmidt 2016-07-27 16:56:40 +10:00 committed by David Gibson
parent 573708e329
commit b00a3b3648
2 changed files with 5 additions and 8 deletions
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9
target-ppc/mem_helper.c
View File

@ -141,13 +141,14 @@ void helper_stsw(CPUPPCState *env, target_ulong addr, uint32_t nb,
}
}
static void do_dcbz(CPUPPCState *env, target_ulong addr, int dcache_line_size)
static void do_dcbz(CPUPPCState *env, target_ulong addr, int dcache_line_size,
uintptr_t raddr)
{
int i;
addr &= ~(dcache_line_size - 1);
for (i = 0; i < dcache_line_size; i += 4) {
cpu_stl_data(env, addr + i, 0);
cpu_stl_data_ra(env, addr + i, 0, raddr);
}
if (env->reserve_addr == addr) {
env->reserve_addr = (target_ulong)-1ULL;
@ -168,7 +169,7 @@ void helper_dcbz(CPUPPCState *env, target_ulong addr, uint32_t is_dcbzl)
/* XXX add e500mc support */
do_dcbz(env, addr, dcbz_size);
do_dcbz(env, addr, dcbz_size, GETPC());
}
void helper_icbi(CPUPPCState *env, target_ulong addr)
@ -190,7 +191,7 @@ target_ulong helper_lscbx(CPUPPCState *env, target_ulong addr, uint32_t reg,
d = 24;
for (i = 0; i < xer_bc; i++) {
c = cpu_ldub_data(env, addr);
c = cpu_ldub_data_ra(env, addr, GETPC());
addr = addr_add(env, addr, 1);
/* ra (if not 0) and rb are never modified */
if (likely(reg != rb && (ra == 0 || reg != ra))) {

4
target-ppc/translate.c
View File

@ -4055,8 +4055,6 @@ static void gen_dcbz(DisasContext *ctx)
int is_dcbzl = ctx->opcode & 0x00200000 ? 1 : 0;
gen_set_access_type(ctx, ACCESS_CACHE);
/* NIP cannot be restored if the memory exception comes from an helper */
gen_update_nip(ctx, ctx->nip - 4);
tcgv_addr = tcg_temp_new();
tcgv_is_dcbzl = tcg_const_i32(is_dcbzl);
@ -4584,8 +4582,6 @@ static void gen_lscbx(DisasContext *ctx)
TCGv_i32 t3 = tcg_const_i32(rB(ctx->opcode));
gen_addr_reg_index(ctx, t0);
/* NIP cannot be restored if the memory exception comes from an helper */
gen_update_nip(ctx, ctx->nip - 4);
gen_helper_lscbx(t0, cpu_env, t0, t1, t2, t3);
tcg_temp_free_i32(t1);
tcg_temp_free_i32(t2);