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libc fprintf implementation for stdout,stderr case (needed from undertale)

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This commit is contained in:
georgemoralis 2023-11-01 13:02:39 +02:00
parent 7b276e0a08
commit c126925dd9
3 changed files with 19 additions and 0 deletions
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3
src/core/hle/libraries/libc/libc.cpp
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@ -109,9 +109,12 @@ void libcSymbolsRegister(SymbolsResolver* sym) {
LIB_FUNCTION("hcuQgD53UxM", "libc", 1, "libc", 1, 1, printf);
LIB_FUNCTION("Q2V+iqvjgC0", "libc", 1, "libc", 1, 1, vsnprintf);
LIB_FUNCTION("YQ0navp+YIc", "libc", 1, "libc", 1, 1, puts);
LIB_FUNCTION("fffwELXNVFA", "libc", 1, "libc", 1, 1, fprintf);
// misc
LIB_OBJ("P330P3dFF68", "libc", 1, "libc", 1, 1, &g_need_sceLibc);
LIB_OBJ("2sWzhYqFH4E","libc", 1, "libc", 1, 1,stdout);
LIB_OBJ("H8AprKeZtNg", "libc", 1, "libc", 1, 1, stderr);
LIB_FUNCTION("bzQExy189ZI", "libc", 1, "libc", 1, 1, init_env);
LIB_FUNCTION("XKRegsFpEpk", "libc", 1, "libc", 1, 1, catchReturnFromMain);
LIB_FUNCTION("-QgqOT5u2Vk", "libc", 1, "libc", 1, 1, _Assert);

15
src/core/hle/libraries/libc/libc_stdio.cpp
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@ -1,10 +1,25 @@
#include "libc_stdio.h"
#include <debug.h>
#include <Util/log.h>
namespace Core::Libraries::LibC {
constexpr bool log_file_libc = true; // disable it to disable logging
int PS4_SYSV_ABI printf(VA_ARGS) {
VA_CTX(ctx);
return printf_ctx(&ctx);
}
int PS4_SYSV_ABI fprintf(FILE* file, VA_ARGS) {
int fd = _fileno(file);
if (fd == 1 || fd == 2) { // output stdout and stderr to console
VA_CTX(ctx);
return printf_ctx(&ctx);
}
LOG_ERROR_IF(log_file_libc, "libc:Unimplemented fprintf case\n");
BREAKPOINT();
return 0;
}
int PS4_SYSV_ABI vsnprintf(char* s, size_t n, const char* format, VaList* arg) { return vsnprintf_ctx(s, n, format, arg); }

1
src/core/hle/libraries/libc/libc_stdio.h
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@ -8,4 +8,5 @@ namespace Core::Libraries::LibC {
int PS4_SYSV_ABI printf(VA_ARGS);
int PS4_SYSV_ABI vsnprintf(char* s, size_t n, const char* format, VaList* arg);
int PS4_SYSV_ABI puts(const char* s);
int PS4_SYSV_ABI fprintf(FILE* file, VA_ARGS);
} // namespace Core::Libraries::LibC