root / cache-utils.c @ 109819e0
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#include "cache-utils.h" |
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#if defined(_ARCH_PPC)
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struct qemu_cache_conf qemu_cache_conf = {
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.dcache_bsize = 16,
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.icache_bsize = 16
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}; |
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#if defined _AIX
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#include <sys/systemcfg.h> |
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static void ppc_init_cacheline_sizes(void) |
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{ |
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qemu_cache_conf.icache_bsize = _system_configuration.icache_line; |
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qemu_cache_conf.dcache_bsize = _system_configuration.dcache_line; |
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} |
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#elif defined __linux__
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#define QEMU_AT_NULL 0 |
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#define QEMU_AT_DCACHEBSIZE 19 |
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#define QEMU_AT_ICACHEBSIZE 20 |
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static void ppc_init_cacheline_sizes(char **envp) |
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{ |
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unsigned long *auxv; |
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while (*envp++);
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for (auxv = (unsigned long *) envp; *auxv != QEMU_AT_NULL; auxv += 2) { |
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switch (*auxv) {
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case QEMU_AT_DCACHEBSIZE: qemu_cache_conf.dcache_bsize = auxv[1]; break; |
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case QEMU_AT_ICACHEBSIZE: qemu_cache_conf.icache_bsize = auxv[1]; break; |
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default: break; |
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} |
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} |
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} |
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#elif defined __APPLE__
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#include <stdio.h> |
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#include <sys/types.h> |
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#include <sys/sysctl.h> |
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static void ppc_init_cacheline_sizes(void) |
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{ |
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size_t len; |
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unsigned cacheline;
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int name[2] = { CTL_HW, HW_CACHELINE }; |
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len = sizeof(cacheline);
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if (sysctl(name, 2, &cacheline, &len, NULL, 0)) { |
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perror("sysctl CTL_HW HW_CACHELINE failed");
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} else {
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qemu_cache_conf.dcache_bsize = cacheline; |
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qemu_cache_conf.icache_bsize = cacheline; |
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} |
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} |
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#endif
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#ifdef __linux__
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void qemu_cache_utils_init(char **envp) |
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{ |
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ppc_init_cacheline_sizes(envp); |
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} |
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#else
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void qemu_cache_utils_init(char **envp) |
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{ |
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(void) envp;
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ppc_init_cacheline_sizes(); |
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} |
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#endif
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#endif /* _ARCH_PPC */ |