diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Makefile | 139 | ||||
| -rw-r--r-- | lib/alloca-arm.S | 8 | ||||
| -rw-r--r-- | lib/alloca86-bt.S | 2 | ||||
| -rw-r--r-- | lib/alloca86.S | 6 | ||||
| -rw-r--r-- | lib/alloca86_64-bt.S | 6 | ||||
| -rw-r--r-- | lib/alloca86_64.S | 12 | ||||
| -rw-r--r-- | lib/armeabi.c | 12 | ||||
| -rw-r--r-- | lib/armflush.c | 58 | ||||
| -rw-r--r-- | lib/bcheck.c | 24 | ||||
| -rw-r--r-- | lib/lib-arm64.c | 12 | ||||
| -rw-r--r-- | lib/libtcc1.c | 144 | ||||
| -rw-r--r-- | lib/va_list.c | 65 |
12 files changed, 243 insertions, 245 deletions
diff --git a/lib/Makefile b/lib/Makefile index e61437e..0c1ec54 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -5,108 +5,69 @@ TOP = .. include $(TOP)/Makefile VPATH = $(TOPSRC)/lib $(TOPSRC)/win32/lib +T = $(or $(CROSS_TARGET),$(NATIVE_TARGET),unknown) +X = $(if $(CROSS_TARGET),$(CROSS_TARGET)-) +BIN = $(TOP)/$(X)libtcc1.a -ifndef TARGET - # we're building the native libtcc1.a - ifdef CONFIG_WIN32 - ifeq ($(ARCH),x86-64) - TARGET = x86_64-win32 - else - TARGET = i386-win32 - endif - # using tcc - else ifeq ($(ARCH),i386) - TARGET = i386 - XCC = $(CC) # using gcc - else ifeq ($(ARCH),x86-64) - TARGET = x86_64 - XCC = $(CC) # using gcc - else ifeq ($(ARCH),arm) - TARGET = arm - XCC = $(CC) # using gcc - else ifeq ($(ARCH),arm64) - TARGET = arm64 - endif - BCHECK_O = bcheck.o -endif - -DIR = $(TARGET) +XTCC ?= $(TOP)/$(X)tcc$(EXESUF) +XCC = $(XTCC) +XAR = $(XTCC) -ar +XFLAGS-unx = -B$(TOPSRC) +XFLAGS-win = -B$(TOPSRC)/win32 -I$(TOPSRC)/include +XFLAGS = $(XFLAGS$(XCFG)) +XCFG = $(or $(findstring -win,$T),-unx) -native : ../libtcc1.a -cross : $(DIR)/libtcc1.a +# in order to use gcc, tyoe: make <target>-libtcc1-usegcc=yes +arm-libtcc1-usegcc ?= no -native : TCC = $(TOP)/tcc$(EXESUF) -cross : TCC = $(TOP)/$(TARGET)-tcc$(EXESUF) - -I386_O = libtcc1.o alloca86.o alloca86-bt.o $(BCHECK_O) -X86_64_O = libtcc1.o alloca86_64.o alloca86_64-bt.o $(BCHECK_O) -ARM_O = libtcc1.o armeabi.o alloca-arm.o -ARM64_O = lib-arm64.o -WIN32_O = crt1.o wincrt1.o dllcrt1.o dllmain.o chkstk.o - -# build TCC runtime library to contain PIC code, so it can be linked -# into shared libraries -PICFLAGS = -fPIC - -ifeq "$(TARGET)" "i386-win32" - OBJ = $(addprefix $(DIR)/,$(I386_O) $(WIN32_O)) - TGT = -DTCC_TARGET_I386 -DTCC_TARGET_PE - XCC = $(TCC) -B$(TOPSRC)/win32 -I$(TOPSRC)/include - XAR = $(DIR)/tiny_libmaker$(EXESUF) - XFLAGS = $(TGT) -else ifeq "$(TARGET)" "x86_64-win32" - OBJ = $(addprefix $(DIR)/,$(X86_64_O) $(WIN32_O)) - TGT = -DTCC_TARGET_X86_64 -DTCC_TARGET_PE - XCC = $(TCC) -B$(TOPSRC)/win32 -I$(TOPSRC)/include - XAR = $(DIR)/tiny_libmaker$(EXESUF) - XFLAGS = $(TGT) -else ifeq "$(TARGET)" "i386" - OBJ = $(addprefix $(DIR)/,$(I386_O)) - TGT = -DTCC_TARGET_I386 - XCC ?= $(TCC) -B$(TOPSRC) -else ifeq "$(TARGET)" "x86_64" - OBJ = $(addprefix $(DIR)/,$(X86_64_O)) - TGT = -DTCC_TARGET_X86_64 - XCC ?= $(TCC) -B$(TOPSRC) -else ifeq "$(TARGET)" "arm" - OBJ = $(addprefix $(DIR)/,$(ARM_O)) - TGT = -DTCC_TARGET_ARM - XCC ?= $(TCC) -B$(TOPSRC) -else ifeq "$(TARGET)" "arm64" - OBJ = $(addprefix $(DIR)/,$(ARM64_O)) - TGT = -DTCC_TARGET_ARM64 - XCC ?= $(TCC) -B$(TOPSRC) -else - $(error libtcc1.a not supported on target '$(TARGET)') +ifeq "$($(T)-libtcc1-usegcc)" "yes" + XCC = $(CC) + XAR = $(AR) + XFLAGS = $(CFLAGS) -fPIC endif -XFLAGS ?= $(CFLAGS) $(PICFLAGS) $(TGT) +# only for native compiler +$(X)BCHECK_O = bcheck.o -ifeq ($(TARGETOS),Darwin) - XAR = $(DIR)/tiny_libmaker$(EXESUF) - XFLAGS += -D_ANSI_SOURCE +ifeq ($(CONFIG_musl)$(CONFIG_uClibc),yes) BCHECK_O = endif -ifdef XAR -AR = $(XAR) +ifdef CONFIG_OSX + XFLAGS += -D_ANSI_SOURCE endif -$(DIR)/libtcc1.a ../libtcc1.a : $(OBJ) $(XAR) - $(AR) rcs $@ $(OBJ) -$(DIR)/%.o : %.c - $(XCC) -c $< -o $@ $(XFLAGS) -$(DIR)/%.o : %.S +I386_O = libtcc1.o alloca86.o alloca86-bt.o +X86_64_O = libtcc1.o alloca86_64.o alloca86_64-bt.o +ARM_O = libtcc1.o armeabi.o alloca-arm.o armflush.o +ARM64_O = lib-arm64.o +WIN_O = crt1.o crt1w.o wincrt1.o wincrt1w.o dllcrt1.o dllmain.o + +OBJ-i386 = $(I386_O) $(BCHECK_O) +OBJ-x86_64 = $(X86_64_O) va_list.o $(BCHECK_O) +OBJ-x86_64-osx = $(X86_64_O) va_list.o +OBJ-i386-win32 = $(I386_O) chkstk.o bcheck.o $(WIN_O) +OBJ-x86_64-win32 = $(X86_64_O) chkstk.o bcheck.o $(WIN_O) +OBJ-arm64 = $(ARM64_O) +OBJ-arm = $(ARM_O) +OBJ-arm-fpa = $(ARM_O) +OBJ-arm-fpa-ld = $(ARM_O) +OBJ-arm-vfp = $(ARM_O) +OBJ-arm-eabi = $(ARM_O) +OBJ-arm-eabihf = $(ARM_O) +OBJ-arm-wince = $(ARM_O) $(WIN_O) + +$(BIN) : $(patsubst %.o,$(X)%.o,$(OBJ-$T)) + $(XAR) rcs $@ $^ + +$(X)%.o : %.c $(XCC) -c $< -o $@ $(XFLAGS) -# windows : utilities -$(DIR)/tiny_%$(EXESUF) : $(TOPSRC)/win32/tools/tiny_%.c - $(CC) -o $@ $< $(CFLAGS) $(LDFLAGS) $(TGT) -$(OBJ) $(XAR) : $(DIR)/exists +$(X)%.o : %.S + $(XCC) -c $< -o $@ $(XFLAGS) -%/exists : - mkdir -p $(DIR) - @echo $@ > $@ +$(X)crt1w.o : crt1.c +$(X)wincrt1w.o : wincrt1.c clean : - rm -rf i386-win32 x86_64-win32 i386 x86_64 arm arm64 + rm -f *.a *.o $(BIN) diff --git a/lib/alloca-arm.S b/lib/alloca-arm.S index 9deae63..68556e3 100644 --- a/lib/alloca-arm.S +++ b/lib/alloca-arm.S @@ -3,9 +3,15 @@ .global alloca .type alloca, %function alloca: +#ifdef __TINYC__ + .int 0xe060d00d + .int 0xe3cdd007 + .int 0xe1a0000d + .int 0xe1a0f00e +#else rsb sp, r0, sp bic sp, sp, #7 mov r0, sp mov pc, lr +#endif .size alloca, .-alloca - .section .note.GNU-stack,"",%progbits diff --git a/lib/alloca86-bt.S b/lib/alloca86-bt.S index 5215505..4f95cf1 100644 --- a/lib/alloca86-bt.S +++ b/lib/alloca86-bt.S @@ -11,7 +11,7 @@ __bound_alloca: and $-4,%eax jz p6 -#ifdef TCC_TARGET_PE +#ifdef _WIN32 p4: cmp $4096,%eax jbe p5 diff --git a/lib/alloca86.S b/lib/alloca86.S index a17e07f..bb7a2c2 100644 --- a/lib/alloca86.S +++ b/lib/alloca86.S @@ -10,7 +10,7 @@ alloca: and $-4,%eax jz p3 -#ifdef TCC_TARGET_PE +#ifdef _WIN32 p1: cmp $4096,%eax jbe p2 @@ -28,8 +28,4 @@ p3: push %edx ret -/* mark stack as nonexecutable */ -#if defined __ELF__ && defined __linux__ - .section .note.GNU-stack,"",@progbits -#endif /* ---------------------------------------------- */ diff --git a/lib/alloca86_64-bt.S b/lib/alloca86_64-bt.S index 1f196bb..4cbad90 100644 --- a/lib/alloca86_64-bt.S +++ b/lib/alloca86_64-bt.S @@ -4,7 +4,7 @@ .globl __bound_alloca __bound_alloca: -#ifdef TCC_TARGET_PE +#ifdef _WIN32 # bound checking is not implemented pop %rdx mov %rcx,%rax @@ -53,8 +53,4 @@ p3: ret #endif -/* mark stack as nonexecutable */ -#if defined __ELF__ && defined __linux__ - .section .note.GNU-stack,"",@progbits -#endif /* ---------------------------------------------- */ diff --git a/lib/alloca86_64.S b/lib/alloca86_64.S index 4a74104..ae3c97d 100644 --- a/lib/alloca86_64.S +++ b/lib/alloca86_64.S @@ -5,7 +5,7 @@ alloca: pop %rdx -#ifdef TCC_TARGET_PE +#ifdef _WIN32 mov %rcx,%rax #else mov %rdi,%rax @@ -14,7 +14,7 @@ alloca: and $-16,%rax jz p3 -#ifdef TCC_TARGET_PE +#ifdef _WIN32 p1: cmp $4096,%rax jbe p2 @@ -27,16 +27,8 @@ p2: sub %rax,%rsp mov %rsp,%rax -#ifdef TCC_TARGET_PE - add $32,%rax -#endif - p3: push %rdx ret -/* mark stack as nonexecutable */ -#if defined __ELF__ && defined __linux__ - .section .note.GNU-stack,"",@progbits -#endif /* ---------------------------------------------- */ diff --git a/lib/armeabi.c b/lib/armeabi.c index b12d164..a59640d 100644 --- a/lib/armeabi.c +++ b/lib/armeabi.c @@ -19,7 +19,19 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.*/ +#ifdef __TINYC__ +#define INT_MIN (-2147483647 - 1) +#define INT_MAX 2147483647 +#define UINT_MAX 0xffffffff +#define LONG_MIN (-2147483647L - 1) +#define LONG_MAX 2147483647L +#define ULONG_MAX 0xffffffffUL +#define LLONG_MAX 9223372036854775807LL +#define LLONG_MIN (-9223372036854775807LL - 1) +#define ULLONG_MAX 0xffffffffffffffffULL +#else #include <limits.h> +#endif /* We rely on the little endianness and EABI calling convention for this to work */ diff --git a/lib/armflush.c b/lib/armflush.c new file mode 100644 index 0000000..eae3260 --- /dev/null +++ b/lib/armflush.c @@ -0,0 +1,58 @@ +/* armflush.c - flush the instruction cache + + __clear_cache is used in tccrun.c, It is a built-in + intrinsic with gcc. However tcc in order to compile + itself needs this function */ + +#ifdef __TINYC__ + +/* syscall wrapper */ +unsigned syscall(unsigned syscall_nr, ...); + +/* arm-tcc supports only fake asm currently */ +__asm__( + ".global syscall\n" + "syscall:\n" + ".int 0xe92d4080\n" // push {r7, lr} + ".int 0xe1a07000\n" // mov r7, r0 + ".int 0xe1a00001\n" // mov r0, r1 + ".int 0xe1a01002\n" // mov r1, r2 + ".int 0xe1a02003\n" // mov r2, r3 + ".int 0xef000000\n" // svc 0x00000000 + ".int 0xe8bd8080\n" // pop {r7, pc} + ); + +/* from unistd.h: */ +#if defined(__thumb__) || defined(__ARM_EABI__) +# define __NR_SYSCALL_BASE 0x0 +#else +# define __NR_SYSCALL_BASE 0x900000 +#endif +#define __ARM_NR_BASE (__NR_SYSCALL_BASE+0x0f0000) +#define __ARM_NR_cacheflush (__ARM_NR_BASE+2) + +#else + +#define _GNU_SOURCE +#include <unistd.h> +#include <sys/syscall.h> +#include <stdio.h> + +#endif + +/* Flushing for tccrun */ +void __clear_cache(void *beginning, void *end) +{ +/* __ARM_NR_cacheflush is kernel private and should not be used in user space. + * However, there is no ARM asm parser in tcc so we use it for now */ +#if 1 + syscall(__ARM_NR_cacheflush, beginning, end, 0); +#else + __asm__ ("push {r7}\n\t" + "mov r7, #0xf0002\n\t" + "mov r2, #0\n\t" + "swi 0\n\t" + "pop {r7}\n\t" + "ret"); +#endif +} diff --git a/lib/bcheck.c b/lib/bcheck.c index d3b9955..90f0ad2 100644 --- a/lib/bcheck.c +++ b/lib/bcheck.c @@ -21,10 +21,15 @@ #include <stdio.h> #include <stdarg.h> #include <string.h> -#if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) \ - && !defined(__DragonFly__) && !defined(__OpenBSD__) && !defined(__NetBSD__) + +#if !defined(__FreeBSD__) \ + && !defined(__FreeBSD_kernel__) \ + && !defined(__DragonFly__) \ + && !defined(__OpenBSD__) \ + && !defined(__NetBSD__) #include <malloc.h> #endif + #if !defined(_WIN32) #include <unistd.h> #endif @@ -45,11 +50,14 @@ #define CONFIG_TCC_MALLOC_HOOKS #define HAVE_MEMALIGN -#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) \ - || defined(__DragonFly__) || defined(__dietlibc__) \ - || defined(__UCLIBC__) || defined(__OpenBSD__) || defined(__NetBSD__) \ - || defined(_WIN32) || defined(TCC_UCLIBC) -#warning Bound checking does not support malloc (etc.) in this environment. +#if defined(__FreeBSD__) \ + || defined(__FreeBSD_kernel__) \ + || defined(__DragonFly__) \ + || defined(__OpenBSD__) \ + || defined(__NetBSD__) \ + || defined(__dietlibc__) \ + || defined(_WIN32) +//#warning Bound checking does not support malloc (etc.) in this environment. #undef CONFIG_TCC_MALLOC_HOOKS #undef HAVE_MEMALIGN #endif @@ -236,7 +244,7 @@ BOUND_PTR_INDIR(16) #if defined(__GNUC__) && (__GNUC__ >= 6) /* - * At least gcc 6.2 complains when __builtin_frame_address is used whith + * At least gcc 6.2 complains when __builtin_frame_address is used with * nonzero argument. */ #pragma GCC diagnostic push diff --git a/lib/lib-arm64.c b/lib/lib-arm64.c index 42d5936..b8fd9e8 100644 --- a/lib/lib-arm64.c +++ b/lib/lib-arm64.c @@ -9,8 +9,20 @@ * without any warranty. */ +#ifdef __TINYC__ +typedef signed char int8_t; +typedef unsigned char uint8_t; +typedef short int16_t; +typedef unsigned short uint16_t; +typedef int int32_t; +typedef unsigned uint32_t; +typedef long long int64_t; +typedef unsigned long long uint64_t; +void *memcpy(void*,void*,__SIZE_TYPE__); +#else #include <stdint.h> #include <string.h> +#endif void __clear_cache(void *beg, void *end) { diff --git a/lib/libtcc1.c b/lib/libtcc1.c index c3ff7fe..0e46618 100644 --- a/lib/libtcc1.c +++ b/lib/libtcc1.c @@ -107,10 +107,10 @@ union float_long { }; /* XXX: we don't support several builtin supports for now */ -#if !defined(TCC_TARGET_X86_64) && !defined(TCC_TARGET_ARM) +#if !defined __x86_64__ && !defined __arm__ /* XXX: use gcc/tcc intrinsic ? */ -#if defined(TCC_TARGET_I386) +#if defined __i386__ #define sub_ddmmss(sh, sl, ah, al, bh, bl) \ __asm__ ("subl %5,%1\n\tsbbl %3,%0" \ : "=r" ((USItype) (sh)), \ @@ -478,18 +478,6 @@ long long __ashldi3(long long a, int b) #endif } -long long __tcc_cvt_ftol(long double x) -{ - unsigned c0, c1; - long long ret; - __asm__ __volatile__ ("fnstcw %0" : "=m" (c0)); - c1 = c0 | 0x0C00; - __asm__ __volatile__ ("fldcw %0" : : "m" (c1)); - __asm__ __volatile__ ("fistpll %0" : "=m" (ret)); - __asm__ __volatile__ ("fldcw %0" : : "m" (c0)); - return ret; -} - #endif /* !__x86_64__ */ /* XXX: fix tcc's code generator to do this instead */ @@ -562,6 +550,13 @@ unsigned long long __fixunssfdi (float a1) return 0; } +long long __fixsfdi (float a1) +{ + long long ret; int s; + ret = __fixunssfdi((s = a1 >= 0) ? a1 : -a1); + return s ? ret : -ret; +} + unsigned long long __fixunsdfdi (double a1) { register union double_long dl1; @@ -587,6 +582,14 @@ unsigned long long __fixunsdfdi (double a1) return 0; } +long long __fixdfdi (double a1) +{ + long long ret; int s; + ret = __fixunsdfdi((s = a1 >= 0) ? a1 : -a1); + return s ? ret : -ret; +} + +#ifndef __arm__ unsigned long long __fixunsxfdi (long double a1) { register union ldouble_long dl1; @@ -610,121 +613,10 @@ unsigned long long __fixunsxfdi (long double a1) return 0; } -long long __fixsfdi (float a1) -{ - long long ret; int s; - ret = __fixunssfdi((s = a1 >= 0) ? a1 : -a1); - return s ? ret : -ret; -} - -long long __fixdfdi (double a1) -{ - long long ret; int s; - ret = __fixunsdfdi((s = a1 >= 0) ? a1 : -a1); - return s ? ret : -ret; -} - long long __fixxfdi (long double a1) { long long ret; int s; ret = __fixunsxfdi((s = a1 >= 0) ? a1 : -a1); return s ? ret : -ret; } - -#if defined(TCC_TARGET_X86_64) && !defined(_WIN64) - -#ifndef __TINYC__ -# include <stdlib.h> -# include <stdio.h> -# include <string.h> -# undef __va_start -# undef __va_arg -# undef __va_copy -# undef __va_end -#else -/* Avoid include files, they may not be available when cross compiling */ -extern void *memset(void *s, int c, __SIZE_TYPE__ n); -extern void abort(void); -#endif - -/* This should be in sync with our include/stdarg.h */ -enum __va_arg_type { - __va_gen_reg, __va_float_reg, __va_stack -}; - -/* GCC compatible definition of va_list. */ -typedef struct { - unsigned int gp_offset; - unsigned int fp_offset; - union { - unsigned int overflow_offset; - char *overflow_arg_area; - }; - char *reg_save_area; -} __va_list_struct; - -void __va_start(__va_list_struct *ap, void *fp) -{ - memset(ap, 0, sizeof(__va_list_struct)); - *ap = *(__va_list_struct *)((char *)fp - 16); - ap->overflow_arg_area = (char *)fp + ap->overflow_offset; - ap->reg_save_area = (char *)fp - 176 - 16; -} - -void *__va_arg(__va_list_struct *ap, - enum __va_arg_type arg_type, - int size, int align) -{ - size = (size + 7) & ~7; - align = (align + 7) & ~7; - switch (arg_type) { - case __va_gen_reg: - if (ap->gp_offset + size <= 48) { - ap->gp_offset += size; - return ap->reg_save_area + ap->gp_offset - size; - } - goto use_overflow_area; - - case __va_float_reg: - if (ap->fp_offset < 128 + 48) { - ap->fp_offset += 16; - return ap->reg_save_area + ap->fp_offset - 16; - } - size = 8; - goto use_overflow_area; - - case __va_stack: - use_overflow_area: - ap->overflow_arg_area += size; - ap->overflow_arg_area = (char*)((long long)(ap->overflow_arg_area + align - 1) & -align); - return ap->overflow_arg_area - size; - - default: /* should never happen */ - abort(); - } -} -#endif /* __x86_64__ */ - -#ifdef TCC_TARGET_ARM -#define _GNU_SOURCE -#include <unistd.h> -#include <sys/syscall.h> -#include <stdio.h> - -/* Flushing for tccrun */ -void __clear_cache(void *beginning, void *end) -{ -/* __ARM_NR_cacheflush is kernel private and should not be used in user space. - * However, there is no ARM asm parser in tcc so we use it for now */ -#if 1 - syscall(__ARM_NR_cacheflush, beginning, end, 0); -#else - __asm__ ("push {r7}\n\t" - "mov r7, #0xf0002\n\t" - "mov r2, #0\n\t" - "swi 0\n\t" - "pop {r7}\n\t" - "ret"); -#endif -} -#endif /* arm */ +#endif /* !ARM */ diff --git a/lib/va_list.c b/lib/va_list.c new file mode 100644 index 0000000..8749f46 --- /dev/null +++ b/lib/va_list.c @@ -0,0 +1,65 @@ +/* va_list.c - tinycc support for va_list on X86_64 */ + +#if defined __x86_64__ + +/* Avoid include files, they may not be available when cross compiling */ +extern void *memset(void *s, int c, __SIZE_TYPE__ n); +extern void abort(void); + +/* This should be in sync with our include/stdarg.h */ +enum __va_arg_type { + __va_gen_reg, __va_float_reg, __va_stack +}; + +/* GCC compatible definition of va_list. */ +typedef struct { + unsigned int gp_offset; + unsigned int fp_offset; + union { + unsigned int overflow_offset; + char *overflow_arg_area; + }; + char *reg_save_area; +} __va_list_struct; + +void __va_start(__va_list_struct *ap, void *fp) +{ + memset(ap, 0, sizeof(__va_list_struct)); + *ap = *(__va_list_struct *)((char *)fp - 16); + ap->overflow_arg_area = (char *)fp + ap->overflow_offset; + ap->reg_save_area = (char *)fp - 176 - 16; +} + +void *__va_arg(__va_list_struct *ap, + enum __va_arg_type arg_type, + int size, int align) +{ + size = (size + 7) & ~7; + align = (align + 7) & ~7; + switch (arg_type) { + case __va_gen_reg: + if (ap->gp_offset + size <= 48) { + ap->gp_offset += size; + return ap->reg_save_area + ap->gp_offset - size; + } + goto use_overflow_area; + + case __va_float_reg: + if (ap->fp_offset < 128 + 48) { + ap->fp_offset += 16; + return ap->reg_save_area + ap->fp_offset - 16; + } + size = 8; + goto use_overflow_area; + + case __va_stack: + use_overflow_area: + ap->overflow_arg_area += size; + ap->overflow_arg_area = (char*)((long long)(ap->overflow_arg_area + align - 1) & -align); + return ap->overflow_arg_area - size; + + default: /* should never happen */ + abort(); + } +} +#endif |