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[PATCH v2 25/29] util/osdep: Add qemu_mprotect_rw
From: |
Richard Henderson |
Subject: |
[PATCH v2 25/29] util/osdep: Add qemu_mprotect_rw |
Date: |
Sun, 14 Mar 2021 15:27:20 -0600 |
For --enable-tcg-interpreter on Windows, we will need this.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
include/qemu/osdep.h | 1 +
util/osdep.c | 9 +++++++++
2 files changed, 10 insertions(+)
diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index ba15be9c56..5cc2e57bdf 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -494,6 +494,7 @@ void sigaction_invoke(struct sigaction *action,
#endif
int qemu_madvise(void *addr, size_t len, int advice);
+int qemu_mprotect_rw(void *addr, size_t size);
int qemu_mprotect_rwx(void *addr, size_t size);
int qemu_mprotect_none(void *addr, size_t size);
diff --git a/util/osdep.c b/util/osdep.c
index 66d01b9160..42a0a4986a 100644
--- a/util/osdep.c
+++ b/util/osdep.c
@@ -97,6 +97,15 @@ static int qemu_mprotect__osdep(void *addr, size_t size, int
prot)
#endif
}
+int qemu_mprotect_rw(void *addr, size_t size)
+{
+#ifdef _WIN32
+ return qemu_mprotect__osdep(addr, size, PAGE_READWRITE);
+#else
+ return qemu_mprotect__osdep(addr, size, PROT_READ | PROT_WRITE);
+#endif
+}
+
int qemu_mprotect_rwx(void *addr, size_t size)
{
#ifdef _WIN32
--
2.25.1
- [PATCH v2 20/29] tcg: Move in_code_gen_buffer and tests to region.c, (continued)
- [PATCH v2 20/29] tcg: Move in_code_gen_buffer and tests to region.c, Richard Henderson, 2021/03/14
- [PATCH v2 17/29] tcg: Rename region.start to region.after_prologue, Richard Henderson, 2021/03/14
- [PATCH v2 19/29] tcg: Tidy split_cross_256mb, Richard Henderson, 2021/03/14
- [PATCH v2 18/29] tcg: Tidy tcg_n_regions, Richard Henderson, 2021/03/14
- [PATCH v2 23/29] tcg: Sink qemu_madvise call to common code, Richard Henderson, 2021/03/14
- [PATCH v2 26/29] tcg: Round the tb_size default from qemu_get_host_physmem, Richard Henderson, 2021/03/14
- [PATCH v2 24/29] tcg: Do not set guard pages in the rx buffer, Richard Henderson, 2021/03/14
- [PATCH v2 28/29] tcg: When allocating for !splitwx, begin with PROT_NONE, Richard Henderson, 2021/03/14
- [PATCH v2 29/29] tcg: Move tcg_init_ctx and tcg_ctx from accel/tcg/, Richard Henderson, 2021/03/14
- [PATCH v2 25/29] util/osdep: Add qemu_mprotect_rw,
Richard Henderson <=
- [PATCH v2 21/29] tcg: Allocate code_gen_buffer into struct tcg_region_state, Richard Henderson, 2021/03/14
- [PATCH v2 27/29] tcg: Merge buffer protection and guard page protection, Richard Henderson, 2021/03/14
- [PATCH v2 22/29] tcg: Return the map protection from alloc_code_gen_buffer, Richard Henderson, 2021/03/14
- Re: [PATCH v2 00/29] tcg: Workaround macOS 11.2 mprotect bug, no-reply, 2021/03/14
- Re: [PATCH v2 00/29] tcg: Workaround macOS 11.2 mprotect bug, Roman Bolshakov, 2021/03/15