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author | Richard Henderson <rth@twiddle.net> | 2012-09-21 10:40:48 -0700 |
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committer | Richard Henderson <rth@twiddle.net> | 2012-09-21 22:02:16 +0200 |
commit | d5dd696fe3049657c08eb14f40cb74b6e94e79cc (patch) | |
tree | 02e02abb7418e3674c45c22da8a8cff95173c3c1 /exec.c | |
parent | a221ae3fcc55fcc3911587bc572af88eed3342dd (diff) | |
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tcg-sparc: Don't MAP_FIXED on top of the program
The address we pick in sparc64.ld is also 0x60000000, so doing a fixed map
on top of that is guaranteed to blow up. Choosing 0x40000000 is exactly
right for the max of code_gen_buffer_size set below.
No need to ever use MAP_FIXED. While getting our desired address helps
optimize the generated code, we won't fail if we don't get it.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'exec.c')
-rw-r--r-- | exec.c | 6 |
1 files changed, 2 insertions, 4 deletions
@@ -543,8 +543,7 @@ static void code_gen_alloc(unsigned long tb_size) code_gen_buffer_size = (800 * 1024 * 1024); #elif defined(__sparc_v9__) // Map the buffer below 2G, so we can use direct calls and branches - flags |= MAP_FIXED; - start = (void *) 0x60000000UL; + start = (void *) 0x40000000UL; if (code_gen_buffer_size > (512 * 1024 * 1024)) code_gen_buffer_size = (512 * 1024 * 1024); #elif defined(__arm__) @@ -584,8 +583,7 @@ static void code_gen_alloc(unsigned long tb_size) code_gen_buffer_size = (800 * 1024 * 1024); #elif defined(__sparc_v9__) // Map the buffer below 2G, so we can use direct calls and branches - flags |= MAP_FIXED; - addr = (void *) 0x60000000UL; + addr = (void *) 0x40000000UL; if (code_gen_buffer_size > (512 * 1024 * 1024)) { code_gen_buffer_size = (512 * 1024 * 1024); } |