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cputlb: Move most of iotlb code out of line

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Saves 2k code size off of a cold path.

Backports commit 82a45b96a203a7403427183f1afd3d295222ff7d from qemu
This commit is contained in:
Richard Henderson 2018-02-27 12:31:10 -05:00 committed by Lioncash
parent 5df7c9eec7
commit 4da1cfb902
No known key found for this signature in database
GPG key ID: 4E3C3CC1031BA9C7
2 changed files with 47 additions and 36 deletions
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37
qemu/cputlb.c
View file

@ -487,6 +487,43 @@ void tlb_unprotect_code(CPUState *cpu, ram_addr_t ram_addr)
cpu_physical_memory_set_dirty_flag(cpu->uc, ram_addr, DIRTY_MEMORY_CODE);
}
static uint64_t io_readx(CPUArchState *env, CPUIOTLBEntry *iotlbentry,
target_ulong addr, uintptr_t retaddr, int size)
{
CPUState *cpu = ENV_GET_CPU(env);
hwaddr physaddr = iotlbentry->addr;
MemoryRegion *mr = iotlb_to_region(cpu, physaddr, iotlbentry->attrs);
uint64_t val;
physaddr = (physaddr & TARGET_PAGE_MASK) + addr;
cpu->mem_io_pc = retaddr;
if (mr != &cpu->uc->io_mem_rom && mr != &cpu->uc->io_mem_notdirty && !cpu->can_do_io) {
cpu_io_recompile(cpu, retaddr);
}
cpu->mem_io_vaddr = addr;
memory_region_dispatch_read(mr, physaddr, &val, size, iotlbentry->attrs);
return val;
}
static void io_writex(CPUArchState *env, CPUIOTLBEntry *iotlbentry,
uint64_t val, target_ulong addr,
uintptr_t retaddr, int size)
{
CPUState *cpu = ENV_GET_CPU(env);
hwaddr physaddr = iotlbentry->addr;
MemoryRegion *mr = iotlb_to_region(cpu, physaddr, iotlbentry->attrs);
physaddr = (physaddr & TARGET_PAGE_MASK) + addr;
if (mr != &cpu->uc->io_mem_rom && mr != &cpu->uc->io_mem_notdirty && !cpu->can_do_io) {
cpu_io_recompile(cpu, retaddr);
}
cpu->mem_io_vaddr = addr;
cpu->mem_io_pc = retaddr;
memory_region_dispatch_write(mr, physaddr, val, size, iotlbentry->attrs);
}
/* Return true if ADDR is present in the victim tlb, and has been copied
back to the main tlb. */
static bool victim_tlb_hit(CPUArchState *env, size_t mmu_idx, size_t index,

46
qemu/softmmu_template.h
View file

@ -119,26 +119,12 @@
#ifndef SOFTMMU_CODE_ACCESS
static inline DATA_TYPE glue(io_read, SUFFIX)(CPUArchState *env,
CPUIOTLBEntry *iotlbentry,
size_t mmu_idx, size_t index,
target_ulong addr,
uintptr_t retaddr)
{
uint64_t val;
CPUState *cpu = ENV_GET_CPU(env);
hwaddr physaddr = iotlbentry->addr;
MemoryRegion *mr = iotlb_to_region(cpu, physaddr, iotlbentry->attrs);
physaddr = (physaddr & TARGET_PAGE_MASK) + addr;
cpu->mem_io_pc = retaddr;
if (mr != &(cpu->uc->io_mem_rom) && mr != &(cpu->uc->io_mem_notdirty)
&& !cpu_can_do_io(cpu)) {
cpu_io_recompile(cpu, retaddr);
}
cpu->mem_io_vaddr = addr;
memory_region_dispatch_read(mr, physaddr, &val, DATA_SIZE,
iotlbentry->attrs);
return (DATA_TYPE)val;
CPUIOTLBEntry *iotlbentry = &env->iotlb[mmu_idx][index];
return io_readx(env, iotlbentry, addr, retaddr, DATA_SIZE);
}
#endif
@ -282,7 +268,7 @@ WORD_TYPE helper_le_ld_name(CPUArchState *env, target_ulong addr,
/* ??? Note that the io helpers always read data in the target
byte ordering. We should push the LE/BE request down into io. */
res = glue(io_read, SUFFIX)(env, iotlbentry, addr, retaddr);
res = glue(io_read, SUFFIX)(env, mmu_idx, index, addr, retaddr);
res = TGT_LE(res);
goto _out;
}
@ -466,7 +452,7 @@ WORD_TYPE helper_be_ld_name(CPUArchState *env, target_ulong addr,
/* ??? Note that the io helpers always read data in the target
byte ordering. We should push the LE/BE request down into io. */
res = glue(io_read, SUFFIX)(env, iotlbentry, addr, retaddr);
res = glue(io_read, SUFFIX)(env, mmu_idx, index, addr, retaddr);
res = TGT_BE(res);
goto _out;
}
@ -528,25 +514,13 @@ WORD_TYPE helper_be_lds_name(CPUArchState *env, target_ulong addr,
#endif
static inline void glue(io_write, SUFFIX)(CPUArchState *env,
CPUIOTLBEntry *iotlbentry,
size_t mmu_idx, size_t index,
DATA_TYPE val,
target_ulong addr,
uintptr_t retaddr)
{
CPUState *cpu = ENV_GET_CPU(env);
hwaddr physaddr = iotlbentry->addr;
MemoryRegion *mr = iotlb_to_region(cpu, physaddr, iotlbentry->attrs);
physaddr = (physaddr & TARGET_PAGE_MASK) + addr;
if (mr != &(cpu->uc->io_mem_rom) && mr != &(cpu->uc->io_mem_notdirty)
&& !cpu_can_do_io(cpu)) {
cpu_io_recompile(cpu, retaddr);
}
cpu->mem_io_vaddr = addr;
cpu->mem_io_pc = retaddr;
memory_region_dispatch_write(mr, physaddr, val, DATA_SIZE,
iotlbentry->attrs);
CPUIOTLBEntry *iotlbentry = &env->iotlb[mmu_idx][index];
return io_writex(env, iotlbentry, val, addr, retaddr, DATA_SIZE);
}
void helper_le_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val,
@ -647,7 +621,7 @@ void helper_le_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val,
/* ??? Note that the io helpers always read data in the target
byte ordering. We should push the LE/BE request down into io. */
val = TGT_LE(val);
glue(io_write, SUFFIX)(env, iotlbentry, val, addr, retaddr);
glue(io_write, SUFFIX)(env, mmu_idx, index, val, addr, retaddr);
return;
}
@ -791,7 +765,7 @@ void helper_be_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val,
/* ??? Note that the io helpers always read data in the target
byte ordering. We should push the LE/BE request down into io. */
val = TGT_BE(val);
glue(io_write, SUFFIX)(env, iotlbentry, val, addr, retaddr);
glue(io_write, SUFFIX)(env, mmu_idx, index, val, addr, retaddr);
return;
}