forked from Ports/goldeneye-pc-port
James Dansereau
97c7e38845
Also commits the prior session's carried-uncommitted set: D294 room-pool fix (sqrt + 2x cap, user-verified state), D324 stdlib-shim prototypes, D323 explicit-LOD census + tools_pc tooling, GRAPHICS-BACKLOG row. texdump*/ probe artifacts gitignored.
46 lines
2.1 KiB
C
46 lines
2.1 KiB
C
/*
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* PC port shim for <stdlib.h>.
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*
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* The N64 decomp ships include/stdlib.h (a libc stub: lldiv_t/ldiv_t typedefs
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* + a couple of prototypes). C game code gets it, exactly as on the console.
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*
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* In C++ TUs (fast3d) it must NOT be used: MinGW's own headers pull in the
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* host <stdlib.h> through their include chains (sec_api/stdlib_s.h does
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* `#include <stdlib.h>`, which resolves to the N64 header via -I), and the
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* lldiv_t/ldiv_t typedefs then conflict with the host's. The shim routes C++
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* TUs to the host header by absolute path (generated hoststdlib.h, same
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* trick as port/shim/string.h — see docs/internals.md §11 D12).
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*
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* Inert in the N64 build (port/shim is not on its include path).
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*/
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#if defined(__cplusplus)
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#include "hoststdlib.h"
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#else
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#include "include/stdlib.h"
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/* D324: the N64 stub declares nothing else, and -- unlike getenv/realloc
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* below -- MinGW's leaked CRT headers do NOT declare these in the port TUs
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* that use them. An implicit `int f()` declaration makes the caller read a
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* double return from eax instead of xmm0 (silent garbage) and truncates
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* pointer/64-bit-long returns to 32 bits (latent on LP64 for strtol).
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* Declared unconditionally; K&R form is compatible with any real prototype.
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* Game TUs that never include <stdlib.h> get these from pc_protos.h. */
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extern double atof();
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extern double strtod();
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extern long int strtol();
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extern int atexit();
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/* D324: getenv was previously declared only on non-Windows, on the (wrong)
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* assumption that MinGW's other CRT headers leak a prototype -- config.c gets
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* none, so its implicit `int f()` declaration truncated the pointer return to
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* 32 bits. Declare unconditionally; K&R form is compatible with any leaked or
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* real prototype. */
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extern char *getenv();
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#if !defined(_WIN32)
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/* The N64 stub declares only lldiv_t/ldiv_t + lldiv/ldiv, and a strict host
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* GCC (Linux/macOS) leaks no CRT prototypes at all, so realloc's pointer
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* return would be assumed int and truncated (crashed configGetFrameDump).
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* (malloc/calloc/free are in port/include/pc_protos.h and a few port TUs'
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* own local decls — not repeated here to avoid conflicts.) */
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extern void *realloc();
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#endif
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#endif
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