diff options
Diffstat (limited to 'accel/tcg/translate-all.c')
| -rw-r--r-- | accel/tcg/translate-all.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index 81d4c83f22..bba9c8e0b3 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -114,6 +114,7 @@ typedef struct PageDesc { unsigned int code_write_count; #else unsigned long flags; + void *target_data; #endif #ifndef CONFIG_USER_ONLY QemuSpin lock; @@ -2740,6 +2741,7 @@ int page_get_flags(target_ulong address) void page_set_flags(target_ulong start, target_ulong end, int flags) { target_ulong addr, len; + bool reset_target_data; /* This function should never be called with addresses outside the guest address space. If this assert fires, it probably indicates @@ -2754,6 +2756,8 @@ void page_set_flags(target_ulong start, target_ulong end, int flags) if (flags & PAGE_WRITE) { flags |= PAGE_WRITE_ORG; } + reset_target_data = !(flags & PAGE_VALID) || (flags & PAGE_RESET); + flags &= ~PAGE_RESET; for (addr = start, len = end - start; len != 0; @@ -2767,10 +2771,34 @@ void page_set_flags(target_ulong start, target_ulong end, int flags) p->first_tb) { tb_invalidate_phys_page(addr, 0); } + if (reset_target_data && p->target_data) { + g_free(p->target_data); + p->target_data = NULL; + } p->flags = flags; } } +void *page_get_target_data(target_ulong address) +{ + PageDesc *p = page_find(address >> TARGET_PAGE_BITS); + return p ? p->target_data : NULL; +} + +void *page_alloc_target_data(target_ulong address, size_t size) +{ + PageDesc *p = page_find(address >> TARGET_PAGE_BITS); + void *ret = NULL; + + if (p->flags & PAGE_VALID) { + ret = p->target_data; + if (!ret) { + p->target_data = ret = g_malloc0(size); + } + } + return ret; +} + int page_check_range(target_ulong start, target_ulong len, int flags) { PageDesc *p; |