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Rework PowerPC 440 TLB management (thanks to Hollis Blanchard) 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3200 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
j_mayer 2007-09-21 05:28:33 +00:00
parent 4296f45902
commit a4bb6c3e87
4 changed files with 110 additions and 175 deletions
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40
target-ppc/op.c
View File

@ -2365,51 +2365,27 @@ void OPPROTO op_wrte (void)
RETURN();
}
void OPPROTO op_booke_tlbre0 (void)
void OPPROTO op_440_tlbre (void)
{
do_booke_tlbre0();
do_440_tlbre(PARAM1);
RETURN();
}
void OPPROTO op_booke_tlbre1 (void)
void OPPROTO op_440_tlbsx (void)
{
do_booke_tlbre1();
do_440_tlbsx();
RETURN();
}
void OPPROTO op_booke_tlbre2 (void)
void OPPROTO op_440_tlbsx_ (void)
{
do_booke_tlbre2();
do_440_tlbsx_();
RETURN();
}
void OPPROTO op_booke_tlbsx (void)
void OPPROTO op_440_tlbwe (void)
{
do_booke_tlbsx();
RETURN();
}
void OPPROTO op_booke_tlbsx_ (void)
{
do_booke_tlbsx_();
RETURN();
}
void OPPROTO op_booke_tlbwe0 (void)
{
do_booke_tlbwe0();
RETURN();
}
void OPPROTO op_booke_tlbwe1 (void)
{
do_booke_tlbwe1();
RETURN();
}
void OPPROTO op_booke_tlbwe2 (void)
{
do_booke_tlbwe2();
do_440_tlbwe(PARAM1);
RETURN();
}

199
target-ppc/op_helper.c
View File

@ -2607,95 +2607,79 @@ void do_4xx_tlbwe_lo (void)
#endif
}
/* BookE TLB management */
void do_booke_tlbwe0 (void)
/* PowerPC 440 TLB management */
void do_440_tlbwe (int word)
{
ppcemb_tlb_t *tlb;
target_ulong EPN, size;
target_ulong EPN, RPN, size;
int do_flush_tlbs;
#if defined (DEBUG_SOFTWARE_TLB)
if (loglevel != 0) {
fprintf(logfile, "%s T0 " REGX " T1 " REGX "\n", __func__, T0, T1);
fprintf(logfile, "%s word %d T0 " REGX " T1 " REGX "\n",
__func__, word, T0, T1);
}
#endif
do_flush_tlbs = 0;
T0 &= 0x3F;
tlb = &env->tlb[T0].tlbe;
EPN = T1 & 0xFFFFFC00;
if ((tlb->prot & PAGE_VALID) && EPN != tlb->EPN)
do_flush_tlbs = 1;
tlb->EPN = EPN;
size = booke_tlb_to_page_size((T1 >> 4) & 0xF);
if ((tlb->prot & PAGE_VALID) && tlb->size < size)
do_flush_tlbs = 1;
tlb->size = size;
tlb->attr &= ~0x1;
tlb->attr |= (T1 >> 8) & 1;
if (T1 & 0x200) {
tlb->prot |= PAGE_VALID;
} else {
if (tlb->prot & PAGE_VALID) {
tlb->prot &= ~PAGE_VALID;
switch (word) {
default:
/* Just here to please gcc */
case 0:
EPN = T1 & 0xFFFFFC00;
if ((tlb->prot & PAGE_VALID) && EPN != tlb->EPN)
do_flush_tlbs = 1;
tlb->EPN = EPN;
size = booke_tlb_to_page_size((T1 >> 4) & 0xF);
if ((tlb->prot & PAGE_VALID) && tlb->size < size)
do_flush_tlbs = 1;
tlb->size = size;
tlb->attr &= ~0x1;
tlb->attr |= (T1 >> 8) & 1;
if (T1 & 0x200) {
tlb->prot |= PAGE_VALID;
} else {
if (tlb->prot & PAGE_VALID) {
tlb->prot &= ~PAGE_VALID;
do_flush_tlbs = 1;
}
}
tlb->PID = env->spr[SPR_440_MMUCR] & 0x000000FF;
if (do_flush_tlbs)
tlb_flush(env, 1);
break;
case 1:
RPN = T1 & 0xFFFFFC0F;
if ((tlb->prot & PAGE_VALID) && tlb->RPN != RPN)
tlb_flush(env, 1);
tlb->RPN = RPN;
break;
case 2:
tlb->attr = (tlb->attr & 0x1) | (T1 & 0x0000FF00);
tlb->prot = tlb->prot & PAGE_VALID;
if (T1 & 0x1)
tlb->prot |= PAGE_READ << 4;
if (T1 & 0x2)
tlb->prot |= PAGE_WRITE << 4;
if (T1 & 0x4)
tlb->prot |= PAGE_EXEC << 4;
if (T1 & 0x8)
tlb->prot |= PAGE_READ;
if (T1 & 0x10)
tlb->prot |= PAGE_WRITE;
if (T1 & 0x20)
tlb->prot |= PAGE_EXEC;
break;
}
tlb->PID = env->spr[SPR_BOOKE_PID];
if (do_flush_tlbs)
tlb_flush(env, 1);
}
void do_booke_tlbwe1 (void)
{
ppcemb_tlb_t *tlb;
target_phys_addr_t RPN;
#if defined (DEBUG_SOFTWARE_TLB)
if (loglevel != 0) {
fprintf(logfile, "%s T0 " REGX " T1 " REGX "\n", __func__, T0, T1);
}
#endif
T0 &= 0x3F;
tlb = &env->tlb[T0].tlbe;
RPN = T1 & 0xFFFFFC0F;
if ((tlb->prot & PAGE_VALID) && tlb->RPN != RPN)
tlb_flush(env, 1);
tlb->RPN = RPN;
}
void do_booke_tlbwe2 (void)
{
ppcemb_tlb_t *tlb;
#if defined (DEBUG_SOFTWARE_TLB)
if (loglevel != 0) {
fprintf(logfile, "%s T0 " REGX " T1 " REGX "\n", __func__, T0, T1);
}
#endif
T0 &= 0x3F;
tlb = &env->tlb[T0].tlbe;
tlb->attr = (tlb->attr & 0x1) | (T1 & 0x0000FF00);
tlb->prot = tlb->prot & PAGE_VALID;
if (T1 & 0x1)
tlb->prot |= PAGE_READ << 4;
if (T1 & 0x2)
tlb->prot |= PAGE_WRITE << 4;
if (T1 & 0x4)
tlb->prot |= PAGE_EXEC << 4;
if (T1 & 0x8)
tlb->prot |= PAGE_READ;
if (T1 & 0x10)
tlb->prot |= PAGE_WRITE;
if (T1 & 0x20)
tlb->prot |= PAGE_EXEC;
}
void do_booke_tlbsx (void)
void do_440_tlbsx (void)
{
T0 = ppcemb_tlb_search(env, T0, env->spr[SPR_440_MMUCR]);
}
void do_booke_tlbsx_ (void)
void do_440_tlbsx_ (void)
{
int tmp = xer_so;
@ -2705,52 +2689,47 @@ void do_booke_tlbsx_ (void)
env->crf[0] = tmp;
}
void do_booke_tlbre0 (void)
void do_440_tlbre (int word)
{
ppcemb_tlb_t *tlb;
int size;
T0 &= 0x3F;
tlb = &env->tlb[T0].tlbe;
T0 = tlb->EPN;
size = booke_page_size_to_tlb(tlb->size);
if (size < 0 || size > 0xF)
size = 1;
T0 |= size << 4;
if (tlb->attr & 0x1)
T0 |= 0x100;
if (tlb->prot & PAGE_VALID)
T0 |= 0x200;
env->spr[SPR_BOOKE_PID] = tlb->PID;
}
void do_booke_tlbre1 (void)
{
ppcemb_tlb_t *tlb;
T0 &= 0x3F;
tlb = &env->tlb[T0].tlbe;
T0 = tlb->RPN;
}
void do_booke_tlbre2 (void)
{
ppcemb_tlb_t *tlb;
T0 &= 0x3F;
tlb = &env->tlb[T0].tlbe;
T0 = tlb->attr & ~0x1;
if (tlb->prot & (PAGE_READ << 4))
T0 |= 0x1;
if (tlb->prot & (PAGE_WRITE << 4))
T0 |= 0x2;
if (tlb->prot & (PAGE_EXEC << 4))
T0 |= 0x4;
if (tlb->prot & PAGE_READ)
T0 |= 0x8;
if (tlb->prot & PAGE_WRITE)
T0 |= 0x10;
if (tlb->prot & PAGE_EXEC)
T0 |= 0x20;
switch (word) {
default:
/* Just here to please gcc */
case 0:
T0 = tlb->EPN;
size = booke_page_size_to_tlb(tlb->size);
if (size < 0 || size > 0xF)
size = 1;
T0 |= size << 4;
if (tlb->attr & 0x1)
T0 |= 0x100;
if (tlb->prot & PAGE_VALID)
T0 |= 0x200;
env->spr[SPR_440_MMUCR] &= ~0x000000FF;
env->spr[SPR_440_MMUCR] |= tlb->PID;
break;
case 1:
T0 = tlb->RPN;
break;
case 2:
T0 = tlb->attr & ~0x1;
if (tlb->prot & (PAGE_READ << 4))
T0 |= 0x1;
if (tlb->prot & (PAGE_WRITE << 4))
T0 |= 0x2;
if (tlb->prot & (PAGE_EXEC << 4))
T0 |= 0x4;
if (tlb->prot & PAGE_READ)
T0 |= 0x8;
if (tlb->prot & PAGE_WRITE)
T0 |= 0x10;
if (tlb->prot & PAGE_EXEC)
T0 |= 0x20;
break;
}
}
#endif /* !CONFIG_USER_ONLY */

14
target-ppc/op_helper.h
View File

@ -156,16 +156,12 @@ void do_POWER_rfsvc (void);
void do_op_602_mfrom (void);
#endif
/* PowerPC BookE specific helpers */
/* PowerPC 440 specific helpers */
#if !defined(CONFIG_USER_ONLY)
void do_booke_tlbre0 (void);
void do_booke_tlbre1 (void);
void do_booke_tlbre2 (void);
void do_booke_tlbsx (void);
void do_booke_tlbsx_ (void);
void do_booke_tlbwe0 (void);
void do_booke_tlbwe1 (void);
void do_booke_tlbwe2 (void);
void do_440_tlbre (int word);
void do_440_tlbsx (void);
void do_440_tlbsx_ (void);
void do_440_tlbwe (int word);
#endif
/* PowerPC 4xx specific helpers */

32
target-ppc/translate.c
View File

@ -4695,9 +4695,9 @@ GEN_HANDLER(tlbwe_40x, 0x1F, 0x12, 0x1E, 0x00000001, PPC_40x_SPEC)
#endif
}
/* TLB management - PowerPC BookE implementation */
/* TLB management - PowerPC 440 implementation */
/* tlbre */
GEN_HANDLER(tlbre_booke, 0x1F, 0x12, 0x1D, 0x00000001, PPC_BOOKE)
GEN_HANDLER(tlbre_440, 0x1F, 0x12, 0x1D, 0x00000001, PPC_BOOKE)
{
#if defined(CONFIG_USER_ONLY)
RET_PRIVOPC(ctx);
@ -4708,18 +4708,10 @@ GEN_HANDLER(tlbre_booke, 0x1F, 0x12, 0x1D, 0x00000001, PPC_BOOKE)
}
switch (rB(ctx->opcode)) {
case 0:
gen_op_load_gpr_T0(rA(ctx->opcode));
gen_op_booke_tlbre0();
gen_op_store_T0_gpr(rD(ctx->opcode));
break;
case 1:
gen_op_load_gpr_T0(rA(ctx->opcode));
gen_op_booke_tlbre1();
gen_op_store_T0_gpr(rD(ctx->opcode));
break;
case 2:
gen_op_load_gpr_T0(rA(ctx->opcode));
gen_op_booke_tlbre2();
gen_op_440_tlbre(rB(ctx->opcode));
gen_op_store_T0_gpr(rD(ctx->opcode));
break;
default:
@ -4730,7 +4722,7 @@ GEN_HANDLER(tlbre_booke, 0x1F, 0x12, 0x1D, 0x00000001, PPC_BOOKE)
}
/* tlbsx - tlbsx. */
GEN_HANDLER(tlbsx_booke, 0x1F, 0x12, 0x1C, 0x00000000, PPC_BOOKE)
GEN_HANDLER(tlbsx_440, 0x1F, 0x12, 0x1C, 0x00000000, PPC_BOOKE)
{
#if defined(CONFIG_USER_ONLY)
RET_PRIVOPC(ctx);
@ -4741,15 +4733,15 @@ GEN_HANDLER(tlbsx_booke, 0x1F, 0x12, 0x1C, 0x00000000, PPC_BOOKE)
}
gen_addr_reg_index(ctx);
if (Rc(ctx->opcode))
gen_op_booke_tlbsx_();
gen_op_440_tlbsx_();
else
gen_op_booke_tlbsx();
gen_op_440_tlbsx();
gen_op_store_T0_gpr(rD(ctx->opcode));
#endif
}
/* tlbwe */
GEN_HANDLER(tlbwe_booke, 0x1F, 0x12, 0x1E, 0x00000001, PPC_BOOKE)
GEN_HANDLER(tlbwe_440, 0x1F, 0x12, 0x1E, 0x00000001, PPC_BOOKE)
{
#if defined(CONFIG_USER_ONLY)
RET_PRIVOPC(ctx);
@ -4760,19 +4752,11 @@ GEN_HANDLER(tlbwe_booke, 0x1F, 0x12, 0x1E, 0x00000001, PPC_BOOKE)
}
switch (rB(ctx->opcode)) {
case 0:
gen_op_load_gpr_T0(rA(ctx->opcode));
gen_op_load_gpr_T1(rS(ctx->opcode));
gen_op_booke_tlbwe0();
break;
case 1:
gen_op_load_gpr_T0(rA(ctx->opcode));
gen_op_load_gpr_T1(rS(ctx->opcode));
gen_op_booke_tlbwe1();
break;
case 2:
gen_op_load_gpr_T0(rA(ctx->opcode));
gen_op_load_gpr_T1(rS(ctx->opcode));
gen_op_booke_tlbwe2();
gen_op_440_tlbwe(rB(ctx->opcode));
break;
default:
RET_INVAL(ctx);