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Fix architecture detection on Windows in Makefile, bump SAVEGAMEVER

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$PROCESSOR_ARCHITECTURE seems to contain the architecture of the host,
but we need the architecture the current MinGW shell is targeting.
$MINGW_CHOST seems to be just that, and on my system it's either
i686-w64-mingw32 (mingw32.exe) or x86_64-w64-mingw32 (mingw64.exe)
(No idea what it looks like for Windows on ARM...)

As fixing this would otherwise break existing savegames, I bumped the
SAVEGAMEVER to "YQ2-5" and added a quirk for older savegameversions:
On Windows i386 savegames that contain "AMD64" instead of "i386" as
architecture are also accepted.
(For YQ2-2 this didn't seem necessary, apparently "i386" was hardcoded)
This commit is contained in:
Daniel Gibson 2021-01-14 03:05:15 +01:00
parent e8f8a1309c
commit b92383eff9
2 changed files with 69 additions and 60 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

19
Makefile
View file

@ -31,6 +31,13 @@ endif
# Detect the architecture
ifeq ($(YQ2_OSTYPE), Windows)
ifdef MINGW_CHOST
ifeq ($(MINGW_CHOST), x86_64-w64-mingw32)
YQ2_ARCH ?= x86_64
else # i686-w64-mingw32
YQ2_ARCH ?= i386
endif
else # windows, but MINGW_CHOST not defined
ifdef PROCESSOR_ARCHITEW6432
# 64 bit Windows
YQ2_ARCH ?= $(PROCESSOR_ARCHITEW6432)
@ -38,6 +45,7 @@ else
# 32 bit Windows
YQ2_ARCH ?= $(PROCESSOR_ARCHITECTURE)
endif
endif # windows but MINGW_CHOST not defined
else
# Normalize some abiguous YQ2_ARCH strings
YQ2_ARCH ?= $(shell uname -m | sed -e 's/i.86/i386/' -e 's/amd64/x86_64/' -e 's/^arm.*/arm/')
@ -120,13 +128,12 @@ endif
# ----------
# If we're building with gcc for i386 let's define -ffloat-store.
# This helps the old and crappy x87 FPU to produce correct values.
# Would be nice if Clang had something comparable.
# Using the default x87 float math on 32bit x86 causes rounding trouble
# -ffloat-store could work around that, but the better solution is to
# just enforce SSE - every x86 CPU since Pentium3 supports that
# and this should even improve the performance on old CPUs
ifeq ($(YQ2_ARCH), i386)
ifeq ($(COMPILER), gcc)
override CFLAGS += -ffloat-store
endif
override CFLAGS += -msse -mfpmath=sse
endif
# Force SSE math on x86_64. All sane compilers should do this

110
src/savegame/savegame.c
View file

@ -51,7 +51,7 @@
* load older savegames. This should be bumped if the files
* in tables/ are changed, otherwise strange things may happen.
*/
#define SAVEGAMEVER "YQ2-4"
#define SAVEGAMEVER "YQ2-5"
/*
* This macros are used to prohibit loading of savegames
@ -844,50 +844,33 @@ ReadGame(const char *filename)
fread(str_os, sizeof(str_os), 1, f);
fread(str_arch, sizeof(str_arch), 1, f);
if (!strcmp(str_ver, SAVEGAMEVER))
{
save_ver = 4;
static const struct {
const char* verstr;
int vernum;
} version_mappings[] = {
{"YQ2-1", 1},
{"YQ2-2", 2},
{"YQ2-3", 3},
{"YQ2-4", 4},
{"YQ2-5", 5},
};
if (strcmp(str_game, GAMEVERSION))
for (i=0; i < sizeof(version_mappings)/sizeof(version_mappings[0]); ++i)
{
if (strcmp(version_mappings[i].verstr, str_ver) == 0)
{
fclose(f);
gi.error("Savegame from an other game.so.\n");
}
else if (strcmp(str_os, YQ2OSTYPE))
{
fclose(f);
gi.error("Savegame from an other os.\n");
}
else if (strcmp(str_arch, YQ2ARCH))
{
fclose(f);
gi.error("Savegame from an other architecure.\n");
save_ver = version_mappings[i].vernum;
break;
}
}
else if (!strcmp(str_ver, "YQ2-3"))
{
save_ver = 3;
if (strcmp(str_game, GAMEVERSION))
{
fclose(f);
gi.error("Savegame from an other game.so.\n");
}
else if (strcmp(str_os, YQ2OSTYPE))
{
fclose(f);
gi.error("Savegame from an other os.\n");
}
else if (strcmp(str_arch, YQ2ARCH))
{
fclose(f);
gi.error("Savegame from an other architecure.\n");
}
if(save_ver < 2)
{
fclose(f);
gi.error("Savegame from an incompatible version.\n");
}
else if (!strcmp(str_ver, "YQ2-2"))
else if (save_ver == 2)
{
save_ver = 2;
if (strcmp(str_game, GAMEVERSION))
{
fclose(f);
@ -899,28 +882,47 @@ ReadGame(const char *filename)
gi.error("Savegame from an other os.\n");
}
if (!strcmp(str_os, "Windows"))
#ifdef _WIN32
/* Windows was forced to i386 */
if (strcmp(str_arch, "i386") != 0)
{
/* Windows was forced to i386 */
if (strcmp(str_arch, "i386"))
{
fclose(f);
gi.error("Savegame from an other architecure.\n");
}
fclose(f);
gi.error("Savegame from another architecture.\n");
}
else
#else
if (strcmp(str_arch, YQ2ARCH_1) != 0)
{
if (strcmp(str_arch, YQ2ARCH_1))
{
fclose(f);
gi.error("Savegame from an other architecure.\n");
}
fclose(f);
gi.error("Savegame from another architecture.\n");
}
#endif
}
else
else // all newer savegame versions
{
fclose(f);
gi.error("Savegame from an incompatible version.\n");
if (strcmp(str_game, GAMEVERSION) != 0)
{
fclose(f);
gi.error("Savegame from another game.so.\n");
}
else if (strcmp(str_os, YQ2OSTYPE) != 0)
{
fclose(f);
gi.error("Savegame from another os.\n");
}
else if (strcmp(str_arch, YQ2ARCH) != 0)
{
#if defined(_WIN32) && (defined(__i386__) || defined(_M_IX86))
// before savegame version "YQ2-5" (and after version 2),
// the official Win32 binaries accidentally had the YQ2ARCH "AMD64"
// instead of "i386" set due to a bug in the Makefile.
// This quirk allows loading those savegames anyway
if (save_ver >= 5 || strcmp(str_arch, "AMD64") != 0)
#endif
{
fclose(f);
gi.error("Savegame from another architecture.\n");
}
}
}
g_edicts = gi.TagMalloc(game.maxentities * sizeof(g_edicts[0]), TAG_GAME);