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tlb: Add "ifetch" argument to cpu_mmu_index()

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This is set to true when the index is for an instruction fetch
translation.

The core get_page_addr_code() sets it, as do the SOFTMMU_CODE_ACCESS
acessors.

All targets ignore it for now, and all other callers pass "false".

This will allow targets who wish to split the mmu index between
instruction and data accesses to do so. A subsequent patch will
do just that for PowerPC.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Message-Id: <1439796853-4410-2-git-send-email-benh@kernel.crashing.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Benjamin Herrenschmidt 2015-08-17 17:34:10 +10:00 • committed by Richard Henderson
parent ba9cef7b6e
commit 97ed5ccdee
32 changed files with 46 additions and 46 deletions
Download patch file Download diff file Expand all files Collapse all files

2
target-microblaze/cpu.h
View file

@ -309,7 +309,7 @@ int cpu_mb_signal_handler(int host_signum, void *pinfo,
#define MMU_USER_IDX 2
/* See NB_MMU_MODES further up the file. */
static inline int cpu_mmu_index (CPUMBState *env)
static inline int cpu_mmu_index (CPUMBState *env, bool ifetch)
{
/* Are we in nommu mode?. */
if (!(env->sregs[SR_MSR] & MSR_VM))

2
target-microblaze/mmu.c
View file

@ -279,7 +279,7 @@ void mmu_write(CPUMBState *env, uint32_t rn, uint32_t v)
}
hit = mmu_translate(&env->mmu, &lu,
v & TLB_EPN_MASK, 0, cpu_mmu_index(env));
v & TLB_EPN_MASK, 0, cpu_mmu_index(env, false));
if (hit) {
env->mmu.regs[MMU_R_TLBX] = lu.idx;
} else

16
target-microblaze/translate.c
View file

@ -418,7 +418,7 @@ static void dec_msr(DisasContext *dc)
CPUState *cs = CPU(dc->cpu);
TCGv t0, t1;
unsigned int sr, to, rn;
int mem_index = cpu_mmu_index(&dc->cpu->env);
int mem_index = cpu_mmu_index(&dc->cpu->env, false);
sr = dc->imm & ((1 << 14) - 1);
to = dc->imm & (1 << 14);
@ -730,7 +730,7 @@ static void dec_bit(DisasContext *dc)
CPUState *cs = CPU(dc->cpu);
TCGv t0;
unsigned int op;
int mem_index = cpu_mmu_index(&dc->cpu->env);
int mem_index = cpu_mmu_index(&dc->cpu->env, false);
op = dc->ir & ((1 << 9) - 1);
switch (op) {
@ -994,7 +994,7 @@ static void dec_load(DisasContext *dc)
* address and if that succeeds we write into the destination reg.
*/
v = tcg_temp_new();
tcg_gen_qemu_ld_tl(v, *addr, cpu_mmu_index(&dc->cpu->env), mop);
tcg_gen_qemu_ld_tl(v, *addr, cpu_mmu_index(&dc->cpu->env, false), mop);
if ((dc->cpu->env.pvr.regs[2] & PVR2_UNALIGNED_EXC_MASK) && size > 1) {
tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc);
@ -1072,7 +1072,7 @@ static void dec_store(DisasContext *dc)
this compare and the following write to be atomic. For user
emulation we need to add atomicity between threads. */
tval = tcg_temp_new();
tcg_gen_qemu_ld_tl(tval, swx_addr, cpu_mmu_index(&dc->cpu->env),
tcg_gen_qemu_ld_tl(tval, swx_addr, cpu_mmu_index(&dc->cpu->env, false),
MO_TEUL);
tcg_gen_brcond_tl(TCG_COND_NE, env_res_val, tval, swx_skip);
write_carryi(dc, 0);
@ -1123,7 +1123,7 @@ static void dec_store(DisasContext *dc)
break;
}
}
tcg_gen_qemu_st_tl(cpu_R[dc->rd], *addr, cpu_mmu_index(&dc->cpu->env), mop);
tcg_gen_qemu_st_tl(cpu_R[dc->rd], *addr, cpu_mmu_index(&dc->cpu->env, false), mop);
/* Verify alignment if needed. */
if ((dc->cpu->env.pvr.regs[2] & PVR2_UNALIGNED_EXC_MASK) && size > 1) {
@ -1219,7 +1219,7 @@ static void dec_bcc(DisasContext *dc)
static void dec_br(DisasContext *dc)
{
unsigned int dslot, link, abs, mbar;
int mem_index = cpu_mmu_index(&dc->cpu->env);
int mem_index = cpu_mmu_index(&dc->cpu->env, false);
dslot = dc->ir & (1 << 20);
abs = dc->ir & (1 << 19);
@ -1351,7 +1351,7 @@ static inline void do_rte(DisasContext *dc)
static void dec_rts(DisasContext *dc)
{
unsigned int b_bit, i_bit, e_bit;
int mem_index = cpu_mmu_index(&dc->cpu->env);
int mem_index = cpu_mmu_index(&dc->cpu->env, false);
i_bit = dc->ir & (1 << 21);
b_bit = dc->ir & (1 << 22);
@ -1523,7 +1523,7 @@ static void dec_null(DisasContext *dc)
/* Insns connected to FSL or AXI stream attached devices. */
static void dec_stream(DisasContext *dc)
{
int mem_index = cpu_mmu_index(&dc->cpu->env);
int mem_index = cpu_mmu_index(&dc->cpu->env, false);
TCGv_i32 t_id, t_ctrl;
int ctrl;