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authorRichard Henderson <rth@twiddle.net>2010-05-06 08:50:41 -0700
committerAurelien Jarno <aurelien@aurel32.net>2010-05-21 18:41:21 +0200
commit9002ec794e8154ff774270cf9fac5f850a1c5751 (patch)
tree2944aa4e144835c7e0da805cdb33252f4ea3749e
parenta5b3b13bedc545b5e571480b9cf47d2d378ad193 (diff)
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tcg: Initialize the prologue after GUEST_BASE is fixed.
This will allow backends to make intelligent choices about how to implement GUEST_BASE. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
-rw-r--r--bsd-user/main.c9
-rw-r--r--exec.c5
-rw-r--r--linux-user/main.c9
-rw-r--r--tcg/tcg.c3
-rw-r--r--tcg/tcg.h1
5 files changed, 25 insertions, 2 deletions
diff --git a/bsd-user/main.c b/bsd-user/main.c
index b1c438d..05cc3d9 100644
--- a/bsd-user/main.c
+++ b/bsd-user/main.c
@@ -30,7 +30,7 @@
#include "qemu-common.h"
/* For tb_lock */
#include "exec-all.h"
-
+#include "tcg.h"
#include "qemu-timer.h"
#include "envlist.h"
@@ -970,6 +970,13 @@ int main(int argc, char **argv)
syscall_init();
signal_init();
+#if defined(CONFIG_USE_GUEST_BASE)
+ /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
+ generating the prologue until now so that the prologue can take
+ the real value of GUEST_BASE into account. */
+ tcg_prologue_init(&tcg_ctx);
+#endif
+
/* build Task State */
memset(ts, 0, sizeof(TaskState));
init_task_state(ts);
diff --git a/exec.c b/exec.c
index 56b5561..bb3dcad 100644
--- a/exec.c
+++ b/exec.c
@@ -574,6 +574,11 @@ void cpu_exec_init_all(unsigned long tb_size)
#if !defined(CONFIG_USER_ONLY)
io_mem_init();
#endif
+#if !defined(CONFIG_USER_ONLY) || !defined(CONFIG_USE_GUEST_BASE)
+ /* There's no guest base to take into account, so go ahead and
+ initialize the prologue now. */
+ tcg_prologue_init(&tcg_ctx);
+#endif
}
#if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY)
diff --git a/linux-user/main.c b/linux-user/main.c
index 5027a6d..b240f29 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -31,7 +31,7 @@
#include "cache-utils.h"
/* For tb_lock */
#include "exec-all.h"
-
+#include "tcg.h"
#include "qemu-timer.h"
#include "envlist.h"
@@ -2984,6 +2984,13 @@ int main(int argc, char **argv, char **envp)
syscall_init();
signal_init();
+#if defined(CONFIG_USE_GUEST_BASE)
+ /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
+ generating the prologue until now so that the prologue can take
+ the real value of GUEST_BASE into account. */
+ tcg_prologue_init(&tcg_ctx);
+#endif
+
#if defined(TARGET_I386)
cpu_x86_set_cpl(env, 3);
diff --git a/tcg/tcg.c b/tcg/tcg.c
index a99ecb9..880e7ce 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -240,7 +240,10 @@ void tcg_context_init(TCGContext *s)
}
tcg_target_init(s);
+}
+void tcg_prologue_init(TCGContext *s)
+{
/* init global prologue and epilogue */
s->code_buf = code_gen_prologue;
s->code_ptr = s->code_buf;
diff --git a/tcg/tcg.h b/tcg/tcg.h
index 44856e1..5853823 100644
--- a/tcg/tcg.h
+++ b/tcg/tcg.h
@@ -346,6 +346,7 @@ static inline void *tcg_malloc(int size)
}
void tcg_context_init(TCGContext *s);
+void tcg_prologue_init(TCGContext *s);
void tcg_func_start(TCGContext *s);
int tcg_gen_code(TCGContext *s, uint8_t *gen_code_buf);