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      1 #include "cache-utils.h"
      2 
      3 #if defined(_ARCH_PPC)
      4 struct qemu_cache_conf qemu_cache_conf = {
      5     .dcache_bsize = 16,
      6     .icache_bsize = 16
      7 };
      8 
      9 #if defined _AIX
     10 #include <sys/systemcfg.h>
     11 
     12 static void ppc_init_cacheline_sizes(void)
     13 {
     14     qemu_cache_conf.icache_bsize = _system_configuration.icache_line;
     15     qemu_cache_conf.dcache_bsize = _system_configuration.dcache_line;
     16 }
     17 
     18 #elif defined __linux__
     19 
     20 #define QEMU_AT_NULL        0
     21 #define QEMU_AT_DCACHEBSIZE 19
     22 #define QEMU_AT_ICACHEBSIZE 20
     23 
     24 static void ppc_init_cacheline_sizes(char **envp)
     25 {
     26     unsigned long *auxv;
     27 
     28     while (*envp++);
     29 
     30     for (auxv = (unsigned long *) envp; *auxv != QEMU_AT_NULL; auxv += 2) {
     31         switch (*auxv) {
     32         case QEMU_AT_DCACHEBSIZE: qemu_cache_conf.dcache_bsize = auxv[1]; break;
     33         case QEMU_AT_ICACHEBSIZE: qemu_cache_conf.icache_bsize = auxv[1]; break;
     34         default: break;
     35         }
     36     }
     37 }
     38 
     39 #elif defined __APPLE__
     40 #include <stdio.h>
     41 #include <sys/types.h>
     42 #include <sys/sysctl.h>
     43 
     44 static void ppc_init_cacheline_sizes(void)
     45 {
     46     size_t len;
     47     unsigned cacheline;
     48     int name[2] = { CTL_HW, HW_CACHELINE };
     49 
     50     len = sizeof(cacheline);
     51     if (sysctl(name, 2, &cacheline, &len, NULL, 0)) {
     52         perror("sysctl CTL_HW HW_CACHELINE failed");
     53     } else {
     54         qemu_cache_conf.dcache_bsize = cacheline;
     55         qemu_cache_conf.icache_bsize = cacheline;
     56     }
     57 }
     58 #endif
     59 
     60 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
     61 #include <errno.h>
     62 #include <stdio.h>
     63 #include <stdlib.h>
     64 #include <string.h>
     65 #include <sys/types.h>
     66 #include <sys/sysctl.h>
     67 
     68 static void ppc_init_cacheline_sizes(void)
     69 {
     70     size_t len = 4;
     71     unsigned cacheline;
     72 
     73     if (sysctlbyname ("machdep.cacheline_size", &cacheline, &len, NULL, 0)) {
     74         fprintf(stderr, "sysctlbyname machdep.cacheline_size failed: %s\n",
     75                 strerror(errno));
     76         exit(1);
     77     }
     78 
     79     qemu_cache_conf.dcache_bsize = cacheline;
     80     qemu_cache_conf.icache_bsize = cacheline;
     81 }
     82 #endif
     83 
     84 #ifdef __linux__
     85 void qemu_cache_utils_init(char **envp)
     86 {
     87     ppc_init_cacheline_sizes(envp);
     88 }
     89 #else
     90 void qemu_cache_utils_init(char **envp)
     91 {
     92     (void) envp;
     93     ppc_init_cacheline_sizes();
     94 }
     95 #endif
     96 
     97 #endif /* _ARCH_PPC */
     98