haraldwolff/qemu-patch-raspberry4
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Remove dead and bitrotten "qemu-fast" code.

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Only build softmmu+MMIO handlers for system emulation.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4695 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2008-06-08 01:09:01 +00:00
parent 2c44375d64
commit e2eef1703b
2 changed files with 16 additions and 130 deletions
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138
exec.c
View file

@ -95,11 +95,13 @@ unsigned long code_gen_buffer_size;
unsigned long code_gen_buffer_max_size;
uint8_t *code_gen_ptr;
#if !defined(CONFIG_USER_ONLY)
ram_addr_t phys_ram_size;
int phys_ram_fd;
uint8_t *phys_ram_base;
uint8_t *phys_ram_dirty;
static ram_addr_t phys_ram_alloc_offset = 0;
#endif
CPUState *first_cpu;
/* current CPU in the current thread. It is only valid inside
@ -137,8 +139,6 @@ typedef struct PhysPageDesc {
#define L1_SIZE (1 << L1_BITS)
#define L2_SIZE (1 << L2_BITS)
static void io_mem_init(void);
unsigned long qemu_real_host_page_size;
unsigned long qemu_host_page_bits;
unsigned long qemu_host_page_size;
@ -148,12 +148,14 @@ unsigned long qemu_host_page_mask;
static PageDesc *l1_map[L1_SIZE];
PhysPageDesc **l1_phys_map;
#if !defined(CONFIG_USER_ONLY)
static void io_mem_init(void);
/* io memory support */
CPUWriteMemoryFunc *io_mem_write[IO_MEM_NB_ENTRIES][4];
CPUReadMemoryFunc *io_mem_read[IO_MEM_NB_ENTRIES][4];
void *io_mem_opaque[IO_MEM_NB_ENTRIES];
static int io_mem_nb;
#if defined(CONFIG_SOFTMMU)
static int io_mem_watch;
#endif
@ -408,7 +410,9 @@ void cpu_exec_init_all(unsigned long tb_size)
code_gen_alloc(tb_size);
code_gen_ptr = code_gen_buffer;
page_init();
#if !defined(CONFIG_USER_ONLY)
io_mem_init();
#endif
}
void cpu_exec_init(CPUState *env)
@ -1536,9 +1540,6 @@ void tlb_flush(CPUState *env, int flush_global)
memset (env->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof (void *));
#if !defined(CONFIG_SOFTMMU)
munmap((void *)MMAP_AREA_START, MMAP_AREA_END - MMAP_AREA_START);
#endif
#ifdef USE_KQEMU
if (env->kqemu_enabled) {
kqemu_flush(env, flush_global);
@ -1585,10 +1586,6 @@ void tlb_flush_page(CPUState *env, target_ulong addr)
tlb_flush_jmp_cache(env, addr);
#if !defined(CONFIG_SOFTMMU)
if (addr < MMAP_AREA_END)
munmap((void *)addr, TARGET_PAGE_SIZE);
#endif
#ifdef USE_KQEMU
if (env->kqemu_enabled) {
kqemu_flush_page(env, addr);
@ -1674,34 +1671,6 @@ void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
#endif
#endif
}
#if !defined(CONFIG_SOFTMMU)
/* XXX: this is expensive */
{
VirtPageDesc *p;
int j;
target_ulong addr;
for(i = 0; i < L1_SIZE; i++) {
p = l1_virt_map[i];
if (p) {
addr = i << (TARGET_PAGE_BITS + L2_BITS);
for(j = 0; j < L2_SIZE; j++) {
if (p->valid_tag == virt_valid_tag &&
p->phys_addr >= start && p->phys_addr < end &&
(p->prot & PROT_WRITE)) {
if (addr < MMAP_AREA_END) {
mprotect((void *)addr, TARGET_PAGE_SIZE,
p->prot & ~PROT_WRITE);
}
}
addr += TARGET_PAGE_SIZE;
p++;
}
}
}
}
#endif
}
static inline void tlb_update_dirty(CPUTLBEntry *tlb_entry)
@ -1795,9 +1764,6 @@ int tlb_set_page_exec(CPUState *env, target_ulong vaddr,
#endif
ret = 0;
#if !defined(CONFIG_SOFTMMU)
if (is_softmmu)
#endif
{
if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM && !(pd & IO_MEM_ROMD)) {
/* IO memory case */
@ -1857,92 +1823,9 @@ int tlb_set_page_exec(CPUState *env, target_ulong vaddr,
te->addr_write = -1;
}
}
#if !defined(CONFIG_SOFTMMU)
else {
if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM) {
/* IO access: no mapping is done as it will be handled by the
soft MMU */
if (!(env->hflags & HF_SOFTMMU_MASK))
ret = 2;
} else {
void *map_addr;
if (vaddr >= MMAP_AREA_END) {
ret = 2;
} else {
if (prot & PROT_WRITE) {
if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_ROM ||
#if defined(TARGET_HAS_SMC) || 1
first_tb ||
#endif
((pd & ~TARGET_PAGE_MASK) == IO_MEM_RAM &&
!cpu_physical_memory_is_dirty(pd))) {
/* ROM: we do as if code was inside */
/* if code is present, we only map as read only and save the
original mapping */
VirtPageDesc *vp;
vp = virt_page_find_alloc(vaddr >> TARGET_PAGE_BITS, 1);
vp->phys_addr = pd;
vp->prot = prot;
vp->valid_tag = virt_valid_tag;
prot &= ~PAGE_WRITE;
}
}
map_addr = mmap((void *)vaddr, TARGET_PAGE_SIZE, prot,
MAP_SHARED | MAP_FIXED, phys_ram_fd, (pd & TARGET_PAGE_MASK));
if (map_addr == MAP_FAILED) {
cpu_abort(env, "mmap failed when mapped physical address 0x%08x to virtual address 0x%08x\n",
paddr, vaddr);
}
}
}
}
#endif
return ret;
}
/* called from signal handler: invalidate the code and unprotect the
page. Return TRUE if the fault was succesfully handled. */
int page_unprotect(target_ulong addr, unsigned long pc, void *puc)
{
#if !defined(CONFIG_SOFTMMU)
VirtPageDesc *vp;
#if defined(DEBUG_TLB)
printf("page_unprotect: addr=0x%08x\n", addr);
#endif
addr &= TARGET_PAGE_MASK;
/* if it is not mapped, no need to worry here */
if (addr >= MMAP_AREA_END)
return 0;
vp = virt_page_find(addr >> TARGET_PAGE_BITS);
if (!vp)
return 0;
/* NOTE: in this case, validate_tag is _not_ tested as it
validates only the code TLB */
if (vp->valid_tag != virt_valid_tag)
return 0;
if (!(vp->prot & PAGE_WRITE))
return 0;
#if defined(DEBUG_TLB)
printf("page_unprotect: addr=0x%08x phys_addr=0x%08x prot=%x\n",
addr, vp->phys_addr, vp->prot);
#endif
if (mprotect((void *)addr, TARGET_PAGE_SIZE, vp->prot) < 0)
cpu_abort(cpu_single_env, "error mprotect addr=0x%lx prot=%d\n",
(unsigned long)addr, vp->prot);
/* set the dirty bit */
phys_ram_dirty[vp->phys_addr >> TARGET_PAGE_BITS] = 0xff;
/* flush the code inside */
tb_invalidate_phys_page(vp->phys_addr, pc, puc);
return 1;
#else
return 0;
#endif
}
#else
void tlb_flush(CPUState *env, int flush_global)
@ -2130,6 +2013,7 @@ static inline void tlb_set_dirty(CPUState *env,
}
#endif /* defined(CONFIG_USER_ONLY) */
#if !defined(CONFIG_USER_ONLY)
static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end,
ram_addr_t memory);
static void *subpage_init (target_phys_addr_t base, ram_addr_t *phys,
@ -2387,7 +2271,6 @@ static CPUWriteMemoryFunc *notdirty_mem_write[3] = {
notdirty_mem_writel,
};
#if defined(CONFIG_SOFTMMU)
/* Watchpoint access routines. Watchpoints are inserted using TLB tricks,
so these check for a hit then pass through to the normal out-of-line
phys routines. */
@ -2463,7 +2346,6 @@ static CPUWriteMemoryFunc *watch_mem_write[3] = {
watch_mem_writew,
watch_mem_writel,
};
#endif
static inline uint32_t subpage_readlen (subpage_t *mmio, target_phys_addr_t addr,
unsigned int len)
@ -2619,10 +2501,8 @@ static void io_mem_init(void)
cpu_register_io_memory(IO_MEM_NOTDIRTY >> IO_MEM_SHIFT, error_mem_read, notdirty_mem_write, NULL);
io_mem_nb = 5;
#if defined(CONFIG_SOFTMMU)
io_mem_watch = cpu_register_io_memory(-1, watch_mem_read,
watch_mem_write, NULL);
#endif
/* alloc dirty bits array */
phys_ram_dirty = qemu_vmalloc(phys_ram_size >> TARGET_PAGE_BITS);
memset(phys_ram_dirty, 0xff, phys_ram_size >> TARGET_PAGE_BITS);
@ -2672,6 +2552,8 @@ CPUReadMemoryFunc **cpu_get_io_memory_read(int io_index)
return io_mem_read[io_index >> IO_MEM_SHIFT];
}
#endif /* !defined(CONFIG_USER_ONLY) */
/* physical memory access (slow version, mainly for debug) */
#if defined(CONFIG_USER_ONLY)
void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,

8
target-cris/op_helper.c
View file

@ -24,6 +24,10 @@
#include "mmu.h"
#include "helper.h"
#define D(x)
#if !defined(CONFIG_USER_ONLY)
#define MMUSUFFIX _mmu
#define SHIFT 0
@ -38,8 +42,6 @@
#define SHIFT 3
#include "softmmu_template.h"
#define D(x)
/* 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) */
@ -78,6 +80,8 @@ void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr)
env = saved_env;
}
#endif
void helper_raise_exception(uint32_t index)
{
env->exception_index = index;