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authorRichard Henderson <rth@twiddle.net>2014-04-24 08:25:03 -0700
committerRichard Henderson <rth@twiddle.net>2014-05-24 08:44:44 -0700
commit479eb12108b66265a8149b0fa90e16900bc217af (patch)
tree4ce3847491bae1deaa193ad233d0ee06c71c6415 /translate-all.c
parent178ac111bca16c08a79b2609ebdc75197bea976a (diff)
downloadqemu-arm-479eb12108b66265a8149b0fa90e16900bc217af.tar.gz
tcg-mips: Layout executable and code_gen_buffer
Choosing good addresses for them means we can use JAL for helper calls. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'translate-all.c')
-rw-r--r--translate-all.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/translate-all.c b/translate-all.c
index 5549a85ed5..c631694a6e 100644
--- a/translate-all.c
+++ b/translate-all.c
@@ -475,6 +475,10 @@ static inline PageDesc *page_find(tb_page_addr_t index)
#elif defined(__s390x__)
/* We have a +- 4GB range on the branches; leave some slop. */
# define MAX_CODE_GEN_BUFFER_SIZE (3ul * 1024 * 1024 * 1024)
+#elif defined(__mips__)
+ /* We have a 256MB branch region, but leave room to make sure the
+ main executable is also within that region. */
+# define MAX_CODE_GEN_BUFFER_SIZE (128ul * 1024 * 1024)
#else
# define MAX_CODE_GEN_BUFFER_SIZE ((size_t)-1)
#endif
@@ -545,6 +549,15 @@ static inline void *alloc_code_gen_buffer(void)
start = 0x40000000ul;
# elif defined(__s390x__)
start = 0x90000000ul;
+# elif defined(__mips__)
+ /* ??? We ought to more explicitly manage layout for softmmu too. */
+# ifdef CONFIG_USER_ONLY
+ start = 0x68000000ul;
+# elif _MIPS_SIM == _ABI64
+ start = 0x128000000ul;
+# else
+ start = 0x08000000ul;
+# endif
# endif
buf = mmap((void *)start, tcg_ctx.code_gen_buffer_size,