mirror of
https://github.com/RaySollium99/libpicofe.git
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5e83fffdf2
git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@312 be3aeb3a-fb24-0410-a615-afba39da0efa
48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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extern char **g_argv;
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/* Call this MMU Hack kernel module after doing mmap, and before doing memset*/
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int mmuhack(void)
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{
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char kocmd[1024];
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int i, mmufd;
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/* some programs like some versions of gpSP use some weird version of mmuhack.o
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* which doesn't seem to work. What's even worse they leave their mmuhack loaded on exit.
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* So we must remove whatever may be left and always reload _our_ mmuhack.o */
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system("/sbin/rmmod mmuhack");
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strcpy(kocmd, "/sbin/insmod ");
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strncpy(kocmd+13, g_argv[0], 1023-13);
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kocmd[1023] = 0;
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for (i = strlen(kocmd); i > 13; i--)
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if (kocmd[i] == '/') { i++; break; }
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strcpy(kocmd+i, "mmuhack.o");
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printf("Installing NK's kernel module for Squidge MMU Hack (%s)...\n", kocmd);
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system(kocmd);
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mmufd = open("/dev/mmuhack", O_RDWR);
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if(mmufd < 0) return 0;
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close(mmufd);
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return 1;
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}
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/* Unload MMU Hack kernel module after closing all memory devices*/
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int mmuunhack(void)
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{
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int ret;
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printf("Removing NK's kernel module for Squidge MMU Hack... "); fflush(stdout);
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ret = system("/sbin/rmmod mmuhack");
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printf("done (%i)\n", ret);
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return ret;
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}
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