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-rw-r--r--accel/tcg/user-exec.c16
-rw-r--r--bsd-user/mmap.c6
-rw-r--r--include/exec/cpu-all.h2
-rw-r--r--linux-user/elfload.c11
-rw-r--r--linux-user/mmap.c16
-rw-r--r--linux-user/syscall.c4
6 files changed, 27 insertions, 28 deletions
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index 7b37fd2..035f809 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -480,24 +480,22 @@ static bool pageflags_set_clear(target_ulong start, target_ulong last,
* The flag PAGE_WRITE_ORG is positioned automatically depending
* on PAGE_WRITE. The mmap_lock should already be held.
*/
-void page_set_flags(target_ulong start, target_ulong end, int flags)
+void page_set_flags(target_ulong start, target_ulong last, int flags)
{
- target_ulong last;
bool reset = false;
bool inval_tb = false;
/* This function should never be called with addresses outside the
guest address space. If this assert fires, it probably indicates
a missing call to h2g_valid. */
- assert(start < end);
- assert(end - 1 <= GUEST_ADDR_MAX);
+ assert(start <= last);
+ assert(last <= GUEST_ADDR_MAX);
/* Only set PAGE_ANON with new mappings. */
assert(!(flags & PAGE_ANON) || (flags & PAGE_RESET));
assert_memory_lock();
- start = start & TARGET_PAGE_MASK;
- end = TARGET_PAGE_ALIGN(end);
- last = end - 1;
+ start &= TARGET_PAGE_MASK;
+ last |= ~TARGET_PAGE_MASK;
if (!(flags & PAGE_VALID)) {
flags = 0;
@@ -510,7 +508,7 @@ void page_set_flags(target_ulong start, target_ulong end, int flags)
}
if (!flags || reset) {
- page_reset_target_data(start, end);
+ page_reset_target_data(start, last + 1);
inval_tb |= pageflags_unset(start, last);
}
if (flags) {
@@ -518,7 +516,7 @@ void page_set_flags(target_ulong start, target_ulong end, int flags)
~(reset ? 0 : PAGE_STICKY));
}
if (inval_tb) {
- tb_invalidate_phys_range(start, end);
+ tb_invalidate_phys_range(start, last + 1);
}
}
diff --git a/bsd-user/mmap.c b/bsd-user/mmap.c
index d6c5a34..6960575 100644
--- a/bsd-user/mmap.c
+++ b/bsd-user/mmap.c
@@ -118,7 +118,7 @@ int target_mprotect(abi_ulong start, abi_ulong len, int prot)
if (ret != 0)
goto error;
}
- page_set_flags(start, start + len, prot | PAGE_VALID);
+ page_set_flags(start, start + len - 1, prot | PAGE_VALID);
mmap_unlock();
return 0;
error:
@@ -656,7 +656,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
}
}
the_end1:
- page_set_flags(start, start + len, prot | PAGE_VALID);
+ page_set_flags(start, start + len - 1, prot | PAGE_VALID);
the_end:
#ifdef DEBUG_MMAP
printf("ret=0x" TARGET_ABI_FMT_lx "\n", start);
@@ -767,7 +767,7 @@ int target_munmap(abi_ulong start, abi_ulong len)
}
if (ret == 0) {
- page_set_flags(start, start + len, 0);
+ page_set_flags(start, start + len - 1, 0);
}
mmap_unlock();
return ret;
diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h
index 548be9c..a2662b1 100644
--- a/include/exec/cpu-all.h
+++ b/include/exec/cpu-all.h
@@ -276,7 +276,7 @@ typedef int (*walk_memory_regions_fn)(void *, target_ulong,
int walk_memory_regions(void *, walk_memory_regions_fn);
int page_get_flags(target_ulong address);
-void page_set_flags(target_ulong start, target_ulong end, int flags);
+void page_set_flags(target_ulong start, target_ulong last, int flags);
void page_reset_target_data(target_ulong start, target_ulong end);
int page_check_range(target_ulong start, target_ulong len, int flags);
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 1dbc1f0..fa4cc41 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -213,7 +213,7 @@ static bool init_guest_commpage(void)
exit(EXIT_FAILURE);
}
page_set_flags(TARGET_VSYSCALL_PAGE,
- TARGET_VSYSCALL_PAGE + TARGET_PAGE_SIZE,
+ TARGET_VSYSCALL_PAGE | ~TARGET_PAGE_MASK,
PAGE_EXEC | PAGE_VALID);
return true;
}
@@ -444,7 +444,7 @@ static bool init_guest_commpage(void)
exit(EXIT_FAILURE);
}
- page_set_flags(commpage, commpage + qemu_host_page_size,
+ page_set_flags(commpage, commpage | ~qemu_host_page_mask,
PAGE_READ | PAGE_EXEC | PAGE_VALID);
return true;
}
@@ -1316,7 +1316,7 @@ static bool init_guest_commpage(void)
exit(EXIT_FAILURE);
}
- page_set_flags(LO_COMMPAGE, LO_COMMPAGE + TARGET_PAGE_SIZE,
+ page_set_flags(LO_COMMPAGE, LO_COMMPAGE | ~TARGET_PAGE_MASK,
PAGE_READ | PAGE_EXEC | PAGE_VALID);
return true;
}
@@ -1728,7 +1728,7 @@ static bool init_guest_commpage(void)
* and implement syscalls. Here, simply mark the page executable.
* Special case the entry points during translation (see do_page_zero).
*/
- page_set_flags(LO_COMMPAGE, LO_COMMPAGE + TARGET_PAGE_SIZE,
+ page_set_flags(LO_COMMPAGE, LO_COMMPAGE | ~TARGET_PAGE_MASK,
PAGE_EXEC | PAGE_VALID);
return true;
}
@@ -2209,7 +2209,8 @@ static void zero_bss(abi_ulong elf_bss, abi_ulong last_bss, int prot)
/* Ensure that the bss page(s) are valid */
if ((page_get_flags(last_bss-1) & prot) != prot) {
- page_set_flags(elf_bss & TARGET_PAGE_MASK, last_bss, prot | PAGE_VALID);
+ page_set_flags(elf_bss & TARGET_PAGE_MASK, last_bss - 1,
+ prot | PAGE_VALID);
}
if (host_start < host_map_start) {
diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index 28135c9..1d07ff5 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -181,7 +181,7 @@ int target_mprotect(abi_ulong start, abi_ulong len, int target_prot)
}
}
- page_set_flags(start, start + len, page_flags);
+ page_set_flags(start, start + len - 1, page_flags);
ret = 0;
error:
@@ -640,15 +640,15 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int target_prot,
}
page_flags |= PAGE_RESET;
if (passthrough_start == passthrough_end) {
- page_set_flags(start, start + len, page_flags);
+ page_set_flags(start, start + len - 1, page_flags);
} else {
if (start < passthrough_start) {
- page_set_flags(start, passthrough_start, page_flags);
+ page_set_flags(start, passthrough_start - 1, page_flags);
}
- page_set_flags(passthrough_start, passthrough_end,
+ page_set_flags(passthrough_start, passthrough_end - 1,
page_flags | PAGE_PASSTHROUGH);
if (passthrough_end < start + len) {
- page_set_flags(passthrough_end, start + len, page_flags);
+ page_set_flags(passthrough_end, start + len - 1, page_flags);
}
}
the_end:
@@ -763,7 +763,7 @@ int target_munmap(abi_ulong start, abi_ulong len)
}
if (ret == 0) {
- page_set_flags(start, start + len, 0);
+ page_set_flags(start, start + len - 1, 0);
}
mmap_unlock();
return ret;
@@ -849,8 +849,8 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
} else {
new_addr = h2g(host_addr);
prot = page_get_flags(old_addr);
- page_set_flags(old_addr, old_addr + old_size, 0);
- page_set_flags(new_addr, new_addr + new_size,
+ page_set_flags(old_addr, old_addr + old_size - 1, 0);
+ page_set_flags(new_addr, new_addr + new_size - 1,
prot | PAGE_VALID | PAGE_RESET);
}
mmap_unlock();
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 2787164..69f740f 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -4595,7 +4595,7 @@ static inline abi_ulong do_shmat(CPUArchState *cpu_env,
}
raddr=h2g((unsigned long)host_raddr);
- page_set_flags(raddr, raddr + shm_info.shm_segsz,
+ page_set_flags(raddr, raddr + shm_info.shm_segsz - 1,
PAGE_VALID | PAGE_RESET | PAGE_READ |
(shmflg & SHM_RDONLY ? 0 : PAGE_WRITE));
@@ -4625,7 +4625,7 @@ static inline abi_long do_shmdt(abi_ulong shmaddr)
for (i = 0; i < N_SHM_REGIONS; ++i) {
if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) {
shm_regions[i].in_use = false;
- page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0);
+ page_set_flags(shmaddr, shmaddr + shm_regions[i].size - 1, 0);
break;
}
}
generated by cgit v1.1 at 2024-09-04 07:11:05 +0000