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libtcc.c: -m option cleanup

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handle mms-bitfields as sub-options of -m. (-mfloat-abi
is still special because it requires arguments)

tcc.c: help():
- list -mms-bitfields under 'Target specific options'

libtcc.c/MEM_DEBUG
- add check for past buffer writes
This commit is contained in:
grischka
2016-12-18 22:57:03 +01:00
parent a1c12b9fb9
commit d2332396e4
4 changed files with 152 additions and 201 deletions
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38
tcc.c
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@ -97,16 +97,11 @@ static void help(void)
" -o outfile set output filename\n"
" -run run compiled source\n"
" -fflag set or reset (with 'no-' prefix) 'flag' (see man page)\n"
" -mms-bitfields use bitfield alignment consistent with MSVC\n"
" -Wwarning set or reset (with 'no-' prefix) 'warning' (see man page)\n"
" -w disable all warnings\n"
" -v show version\n"
" -vv show included files (as sole argument: show search paths)\n"
" -dumpversion\n"
" -bench show compilation statistics\n"
" -xc -xa specify type of the next infile\n"
" - use stdin pipe as infile\n"
" @listfile read arguments from listfile\n"
"Preprocessor options:\n"
" -Idir add include path 'dir'\n"
" -Dsym[=val] define 'sym' with value 'val'\n"
@ -117,12 +112,12 @@ static void help(void)
"Linker options:\n"
" -Ldir add library path 'dir'\n"
" -llib link with dynamic or static library 'lib'\n"
" -pthread link with -lpthread and -D_REENTRANT (POSIX Linux)\n"
" -r generate (relocatable) object file\n"
" -rdynamic export all global symbols to dynamic linker\n"
" -shared generate a shared library\n"
" -rdynamic export all global symbols to dynamic linker\n"
" -soname set name for shared library to be used at runtime\n"
" -static static linking\n"
" -pthread link with -lpthread and -D_REENTRANT (POSIX Linux)\n"
" -Wl,-opt[=val] set linker option (see manual)\n"
"Debugger options:\n"
" -g generate runtime debug info\n"
@ -133,11 +128,24 @@ static void help(void)
" -bt N show N callers in stack traces\n"
#endif
"Misc options:\n"
" -x[c|a|n] specify type of the next infile\n"
" -nostdinc do not use standard system include paths\n"
" -nostdlib do not link with standard crt and libraries\n"
" -Bdir use 'dir' as tcc internal library and include path\n"
" -Bdir use 'dir' as tcc's private library/include path\n"
" -MD generate target dependencies for make\n"
" -MF depfile put generated dependencies here\n"
" -dumpversion print version\n"
" - use stdin pipe as infile\n"
" @listfile read arguments from listfile\n"
"Target specific options:\n"
" -m32/64 execute i386/x86-64 cross compiler\n"
" -mms-bitfields use MSVC bitfield layout\n"
#ifdef TCC_TARGET_ARM
" -mfloat-abi hard/softfp on arm\n"
#endif
#ifdef TCC_TARGET_X86_64
" -mno-sse disable floats on x86-64\n"
#endif
);
}
@ -155,10 +163,10 @@ static int execvp_win32(const char *prog, char **argv)
}
#define execvp execvp_win32
#endif
static void exec_other_tcc(TCCState *s, char **argv, const char *optarg)
static void exec_other_tcc(TCCState *s, char **argv, int option)
{
char child_path[4096], *child_name; const char *target;
switch (atoi(optarg)) {
switch (option) {
#ifdef TCC_TARGET_I386
case 32: break;
case 64: target = "x86_64";
@ -179,14 +187,10 @@ static void exec_other_tcc(TCCState *s, char **argv, const char *optarg)
execvp(argv[0] = child_path, argv);
}
tcc_error("'%s' not found", child_name);
case 0: /* ignore -march etc. */
break;
default:
tcc_warning("unsupported option \"-m%s\"", optarg);
}
}
#else
#define exec_other_tcc(s, argv, optarg)
#define exec_other_tcc(s, argv, option)
#endif
static void gen_makedeps(TCCState *s, const char *target, const char *filename)
@ -274,8 +278,8 @@ int main(int argc, char **argv)
return 1;
}
if (s->option_m)
exec_other_tcc(s, argv, s->option_m);
if (s->cross_target)
exec_other_tcc(s, argv, s->cross_target);
if (s->verbose)
display_info(s, 0);