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target/sparc: Convert to CPUClass::tlb_fill

Browse Source 
Cc: Artyom Tarasenko <atar4qemu@gmail.com>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2019-04-03 07:16:41 +07:00
parent f98bce2b9c
commit e84942f2ce
4 changed files with 43 additions and 36 deletions
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5
target/sparc/cpu.c
View File

@ -875,9 +875,8 @@ static void sparc_cpu_class_init(ObjectClass *oc, void *data)
cc->synchronize_from_tb = sparc_cpu_synchronize_from_tb;
cc->gdb_read_register = sparc_cpu_gdb_read_register;
cc->gdb_write_register = sparc_cpu_gdb_write_register;
#ifdef CONFIG_USER_ONLY
cc->handle_mmu_fault = sparc_cpu_handle_mmu_fault;
#else
cc->tlb_fill = sparc_cpu_tlb_fill;
#ifndef CONFIG_USER_ONLY
cc->do_unassigned_access = sparc_cpu_unassigned_access;
cc->do_unaligned_access = sparc_cpu_do_unaligned_access;
cc->get_phys_page_debug = sparc_cpu_get_phys_page_debug;

5
target/sparc/cpu.h
View File

@ -579,8 +579,9 @@ void cpu_raise_exception_ra(CPUSPARCState *, int, uintptr_t) QEMU_NORETURN;
void cpu_sparc_set_id(CPUSPARCState *env, unsigned int cpu);
void sparc_cpu_list(void);
/* mmu_helper.c */
int sparc_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int size, int rw,
int mmu_idx);
bool sparc_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
MMUAccessType access_type, int mmu_idx,
bool probe, uintptr_t retaddr);
target_ulong mmu_probe(CPUSPARCState *env, target_ulong address, int mmulev);
void dump_mmu(CPUSPARCState *env);

11
target/sparc/ldst_helper.c
View File

@ -1925,18 +1925,9 @@ void QEMU_NORETURN sparc_cpu_do_unaligned_access(CPUState *cs, vaddr addr,
cpu_raise_exception_ra(env, TT_UNALIGNED, retaddr);
}
/* try to fill the TLB and return an exception if error. If retaddr is
NULL, it means that the function was called in C code (i.e. not
from generated code or from helper.c) */
/* XXX: fix it to restore all registers */
void tlb_fill(CPUState *cs, target_ulong addr, int size,
MMUAccessType access_type, int mmu_idx, uintptr_t retaddr)
{
int ret;
ret = sparc_cpu_handle_mmu_fault(cs, addr, size, access_type, mmu_idx);
if (ret) {
cpu_loop_exit_restore(cs, retaddr);
}
sparc_cpu_tlb_fill(cs, addr, size, access_type, mmu_idx, false, retaddr);
}
#endif

58
target/sparc/mmu_helper.c
View File

@ -27,13 +27,14 @@
#if defined(CONFIG_USER_ONLY)
int sparc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size, int rw,
int mmu_idx)
bool sparc_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
MMUAccessType access_type, int mmu_idx,
bool probe, uintptr_t retaddr)
{
SPARCCPU *cpu = SPARC_CPU(cs);
CPUSPARCState *env = &cpu->env;
if (rw & 2) {
if (access_type == MMU_INST_FETCH) {
cs->exception_index = TT_TFAULT;
} else {
cs->exception_index = TT_DFAULT;
@ -43,7 +44,7 @@ int sparc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size, int rw,
env->mmuregs[4] = address;
#endif
}
return 1;
cpu_loop_exit_restore(cs, retaddr);
}
#else
@ -208,8 +209,9 @@ static int get_physical_address(CPUSPARCState *env, hwaddr *physical,
}
/* Perform address translation */
int sparc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size, int rw,
int mmu_idx)
bool sparc_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
MMUAccessType access_type, int mmu_idx,
bool probe, uintptr_t retaddr)
{
SPARCCPU *cpu = SPARC_CPU(cs);
CPUSPARCState *env = &cpu->env;
@ -218,16 +220,26 @@ int sparc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size, int rw,
target_ulong page_size;
int error_code = 0, prot, access_index;
/*
* TODO: If we ever need tlb_vaddr_to_host for this target,
* then we must figure out how to manipulate FSR and FAR
* when both MMU_NF and probe are set. In the meantime,
* do not support this use case.
*/
assert(!probe);
address &= TARGET_PAGE_MASK;
error_code = get_physical_address(env, &paddr, &prot, &access_index,
address, rw, mmu_idx, &page_size);
address, access_type,
mmu_idx, &page_size);
vaddr = address;
if (error_code == 0) {
if (likely(error_code == 0)) {
qemu_log_mask(CPU_LOG_MMU,
"Translate at %" VADDR_PRIx " -> " TARGET_FMT_plx ", vaddr "
TARGET_FMT_lx "\n", address, paddr, vaddr);
"Translate at %" VADDR_PRIx " -> "
TARGET_FMT_plx ", vaddr " TARGET_FMT_lx "\n",
address, paddr, vaddr);
tlb_set_page(cs, vaddr, paddr, prot, mmu_idx, page_size);
return 0;
return true;
}
if (env->mmuregs[3]) { /* Fault status register */
@ -243,14 +255,14 @@ int sparc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size, int rw,
switching to normal mode. */
prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
tlb_set_page(cs, vaddr, paddr, prot, mmu_idx, TARGET_PAGE_SIZE);
return 0;
return true;
} else {
if (rw & 2) {
if (access_type == MMU_INST_FETCH) {
cs->exception_index = TT_TFAULT;
} else {
cs->exception_index = TT_DFAULT;
}
return 1;
cpu_loop_exit_restore(cs, retaddr);
}
}
@ -713,8 +725,9 @@ static int get_physical_address(CPUSPARCState *env, hwaddr *physical,
}
/* Perform address translation */
int sparc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size, int rw,
int mmu_idx)
bool sparc_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
MMUAccessType access_type, int mmu_idx,
bool probe, uintptr_t retaddr)
{
SPARCCPU *cpu = SPARC_CPU(cs);
CPUSPARCState *env = &cpu->env;
@ -725,8 +738,9 @@ int sparc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size, int rw,
address &= TARGET_PAGE_MASK;
error_code = get_physical_address(env, &paddr, &prot, &access_index,
address, rw, mmu_idx, &page_size);
if (error_code == 0) {
address, access_type,
mmu_idx, &page_size);
if (likely(error_code == 0)) {
vaddr = address;
trace_mmu_helper_mmu_fault(address, paddr, mmu_idx, env->tl,
@ -734,10 +748,12 @@ int sparc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size, int rw,
env->dmmu.mmu_secondary_context);
tlb_set_page(cs, vaddr, paddr, prot, mmu_idx, page_size);
return 0;
return true;
}
/* XXX */
return 1;
if (probe) {
return false;
}
cpu_loop_exit_restore(cs, retaddr);
}
void dump_mmu(CPUSPARCState *env)