1 #include "cache-utils.h"

     2 

     3 #ifdef __powerpc__

     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 <sys/types.h>

    41 #include <sys/sysctl.h>

    42 

    43 static void ppc_init_cacheline_sizes(void)

    44 {

    45     size_t len;

    46     unsigned cacheline;

    47     int name[2] = { CTL_HW, HW_CACHELINE };

    48 

    49     if (sysctl(name, 2, &cacheline, &len, NULL, 0)) {

    50         perror("sysctl CTL_HW HW_CACHELINE failed");

    51     } else {

    52         qemu_cache_conf.dcache_bsize = cacheline;

    53         qemu_cache_conf.icache_bsize = cacheline;

    54     }

    55 }

    56 #endif

    57 

    58 #ifdef __linux__

    59 void qemu_cache_utils_init(char **envp)

    60 {

    61     ppc_init_cacheline_sizes(envp);

    62 }

    63 #else

    64 void qemu_cache_utils_init(char **envp)

    65 {

    66     (void) envp;

    67     ppc_init_cacheline_sizes();

    68 }

    69 #endif

    70 

    71 #endif /* __powerpc__ */