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| author | balrog <balrog@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-12-01 02:10:17 +0000 |
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| committer | balrog <balrog@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-12-01 02:10:17 +0000 |
| commit | 1cb0661e009267a5d060c4686f0857784a8da228 (patch) | |
| tree | c5049d98ae788761b67453d2ae1c6ed45a7422bf | |
| parent | 3233f0d463d299be89e2672928fc215dc99c2c71 (diff) | |
| download | focaccia-qemu-1cb0661e009267a5d060c4686f0857784a8da228.tar.gz focaccia-qemu-1cb0661e009267a5d060c4686f0857784a8da228.zip | |
arm: Reserve code buffer in memory range reachable for pc-relative branch.
Unfortunately this range is so narrow that I'm not sure if it makes more sense to always use memory load to pc kind of branch instead. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5844 c046a42c-6fe2-441c-8c8c-71466251a162
| -rw-r--r-- | exec.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/exec.c b/exec.c index 3523c9577e..1aa64327af 100644 --- a/exec.c +++ b/exec.c @@ -436,6 +436,12 @@ static void code_gen_alloc(unsigned long tb_size) start = (void *) 0x60000000UL; if (code_gen_buffer_size > (512 * 1024 * 1024)) code_gen_buffer_size = (512 * 1024 * 1024); +#elif defined(__arm__) + /* Map the buffer below 64M, so we can use direct calls and branches */ + flags |= MAP_FIXED; + start = (void *) 0x01000000UL; + if (code_gen_buffer_size > 16 * 1024 * 1024) + code_gen_buffer_size = 16 * 1024 * 1024; #endif code_gen_buffer = mmap(start, code_gen_buffer_size, PROT_WRITE | PROT_READ | PROT_EXEC, |