2 * AcessOS Basic C Library
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4 #include "stdio_int.h"
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8 #include <acess/sys.h>
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18 // === PROTOTYPES ===
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20 static void cpuid(uint32_t Num, uint32_t *EAX, uint32_t *EBX, uint32_t *EDX, uint32_t *ECX);
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22 int ErrorHandler(int Fault);
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25 extern tLoadedLib gLoadedLibraries[64];
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26 extern void *_crt0_exit_handler;
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27 extern void _stdio_init(void);
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28 extern void _call_atexit_handlers(void);
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31 extern char **_envp;
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32 // --- CPU Features ---
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34 tCPUID gCPU_Features;
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40 * \brief Stub Entrypoint
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41 * \param BaseAddress Unused - Load Address of libc
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42 * \param argc Unused - Argument Count (0 for current version of ld-acess)
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43 * \param argv Unused - Arguments (NULL for current version of ld-acess)
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44 * \param envp Environment Pointer
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46 int SoMain(UNUSED(uintptr_t, BaseAddress), UNUSED(int, argc), UNUSED(char **, argv), char **envp)
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55 _SysDebug("envp = %p", envp);
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56 for(tmp = envp; *tmp; tmp++,i++)
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58 _SysDebug("envp[%i] = '%s'", i, *tmp);
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68 cpuid(1, NULL, NULL, &edx, &ecx);
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69 gCPU_Features.SSE = edx & (1 << 25); // SSE
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70 gCPU_Features.SSE2 = edx & (1 << 26); // SSE2
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74 _crt0_exit_handler = _call_atexit_handlers;
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76 // Set Error handler
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77 _SysSetFaultHandler(ErrorHandler);
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82 int ErrorHandler(int Fault)
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85 fprintf(stderr, "ErrorHandler: (Fault = %i)\n", Fault);
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86 fprintf(stderr, "Loaded Libraries:\n");
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87 for( i = 0; i < 64; i ++ )
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89 //if(gLoadedLibraries[i].Base == 0) continue;
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90 // fprintf(stderr, "%02i: %p %s\n", i, gLoadedLibraries[i].Base, gLoadedLibraries[i].Name);
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92 fprintf(stderr, "\n");
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97 EXPORT int *libc_geterrno()
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104 * \brief Call the CPUID opcode
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106 static void cpuid(uint32_t Num, uint32_t *EAX, uint32_t *EBX, uint32_t *EDX, uint32_t *ECX)
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108 uint32_t eax, ebx, edx, ecx;
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110 __asm__ __volatile__ (
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112 : "=a"(eax), "=c"(ecx), "=d"(edx)
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116 if(EAX) *EAX = eax;
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117 if(EBX) *EBX = ebx;
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118 if(EDX) *EDX = edx;
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119 if(ECX) *ECX = ecx;
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