Revision 141ac468 exec.c
| b/exec.c | ||
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| 89 | 89 |
/* any access to the tbs or the page table must use this lock */ |
| 90 | 90 |
spinlock_t tb_lock = SPIN_LOCK_UNLOCKED; |
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#if defined(__arm__) |
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/* The prologue must be reachable with a direct jump. ARM has a
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limited branch range (possibly also PPC and SPARC?) so place it in a
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#if defined(__arm__) || defined(__sparc_v9__)
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/* The prologue must be reachable with a direct jump. ARM and Sparc64
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have limited branch ranges (possibly also PPC) so place it in a
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section close to code segment. */ |
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#define code_gen_section \ |
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__attribute__((__section__(".gen_code"))) \
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| ... | ... | |
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#if defined(__linux__) |
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{
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int flags; |
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void *start = NULL; |
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flags = MAP_PRIVATE | MAP_ANONYMOUS; |
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#if defined(__x86_64__) |
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flags |= MAP_32BIT; |
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/* Cannot map more than that */ |
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if (code_gen_buffer_size > (800 * 1024 * 1024)) |
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code_gen_buffer_size = (800 * 1024 * 1024); |
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#endif |
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code_gen_buffer = mmap(NULL, code_gen_buffer_size, |
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PROT_WRITE | PROT_READ | PROT_EXEC, |
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#elif defined(__sparc_v9__) |
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// Map the buffer below 2G, so we can use direct calls and branches |
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flags |= MAP_FIXED; |
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start = (void *) 0x60000000UL; |
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if (code_gen_buffer_size > (512 * 1024 * 1024)) |
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code_gen_buffer_size = (512 * 1024 * 1024); |
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#endif |
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code_gen_buffer = mmap(start, code_gen_buffer_size, |
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PROT_WRITE | PROT_READ | PROT_EXEC, |
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flags, -1, 0); |
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if (code_gen_buffer == MAP_FAILED) {
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fprintf(stderr, "Could not allocate dynamic translator buffer\n"); |
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