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LibretroAdmin
bae87174dc
The tree's 3DS layer (the custom crt0 and link spec, system and memory setup, svchax, the old GPU command layer and the 3dsx/CIA launchers) lives under os/ctr, beside os/gekko and os/wiiu. The linear heap allocator is C: the same first-fit pool, so buffers land where they did, with live allocations found by address in an open-addressing table instead of a per-allocation tree node, and list nodes taken from cache-line-aligned slabs and reused. On the same trace it runs about half the instructions and practically no malloc/free calls. With the whole heap allocated, a further allocation now fails instead of starting the heap over and handing out its first address again, and the free-space queries no longer fault. samples/frontend/ctr_linear checks placement, alignment, coalescing, the full-heap case and pages handed back from the heap's end.
92 lines
2.0 KiB
C
92 lines
2.0 KiB
C
#include <string.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include "mini-hb-menu/common.h"
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extern const loaderFuncs_s loader_Ninjhax2;
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extern const loaderFuncs_s loader_Rosalina;
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static void (*launch_3dsx)(const char* path,
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argData_s* args, executableMetadata_s* em);
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static int exec_3dsx_actual(const char* path,
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const char** args, bool appendPath)
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{
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bool inited;
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bool fileExists;
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struct stat sBuff;
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argData_s newProgramArgs;
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unsigned int argChars = 0;
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unsigned int argNum = 0;
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if (!path || path[0] == '\0')
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{
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errno = EINVAL;
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return -1;
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}
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fileExists = stat(path, &sBuff) == 0;
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if (!fileExists)
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{
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errno = ENOENT;
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return -1;
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}
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else if (S_ISDIR(sBuff.st_mode))
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{
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errno = EINVAL;
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return -1;
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}
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/* args the string functions write to the passed string,
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* this will cause a write to read only memory,
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* so the string must be cloned */
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memset(newProgramArgs.buf, '\0', sizeof(newProgramArgs.buf));
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newProgramArgs.dst = (char*)&newProgramArgs.buf[1];
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if (appendPath)
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{
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strcpy(newProgramArgs.dst, path);
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newProgramArgs.dst += strlen(path) + 1;
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newProgramArgs.buf[0]++;
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}
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while(args[argNum])
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{
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strcpy(newProgramArgs.dst, args[argNum]);
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newProgramArgs.dst += strlen(args[argNum]) + 1;
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newProgramArgs.buf[0]++;
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argNum++;
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}
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inited = loader_Rosalina.init();
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launch_3dsx = loader_Rosalina.launchFile;
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if (!inited)
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{
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inited = loader_Ninjhax2.init();
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launch_3dsx = loader_Ninjhax2.launchFile;
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}
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if (inited)
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{
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osSetSpeedupEnable(false);
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launch_3dsx(path, &newProgramArgs, NULL);
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exit(0);
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}
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/* should never be reached */
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errno = ENOTSUP;
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return -1;
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}
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int exec_3dsx(const char* path, const char** args)
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{
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return exec_3dsx_actual(path, args, true/*appendPath*/);
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}
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int exec_3dsx_no_path_in_args(const char* path, const char** args)
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{
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return exec_3dsx_actual(path, args, false/*appendPath*/);
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}
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