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more minor fixes

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* tccgen: re-allow long double constants for x87 cross
  sizeof (long double) may be 12 or 16 depending on host platform
  (i386/x86_64 on unix/windows).
  Except that it's 8 if the host is on windows and not gcc
  was used to compile tcc.

* win64: fix builtin_va_start after VT_REF removal
  See also a8b83ce43a

* tcctest.c: remove outdated limitation for ll-bitfield test
  It always worked, there is no reason why it should not work
  in future.

* libtcc1.c: exclude long double conversion on ARM

* Makefile: remove CFLAGS from link recipes

* lib/Makefile: use target DEFINES as passed from main Makefile

* lib/armflush.c lib/va_list.c: factor out from libtcc1.c

* arm-gen.c: disable "depreciated" warnings for now
This commit is contained in:
grischka 2017-05-07 12:41:29 +02:00
parent 94ac9f2b49
commit 44abffe33a
9 changed files with 195 additions and 167 deletions
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14
Makefile
View File

@ -195,14 +195,14 @@ $(X)arm-gen.o : arm-asm.c
# Host Tiny C Compiler
tcc$(EXESUF): tcc.o $(LIBTCC)
$(CC) -o $@ $^ $(DEFINES) $(CFLAGS) $(LIBS) $(LDFLAGS) $(LINK_LIBTCC)
$(CC) -o $@ $^ $(LIBS) $(LDFLAGS) $(LINK_LIBTCC)
# Cross Tiny C Compilers
%-tcc$(EXESUF): FORCE
@$(MAKE) --no-print-directory $@ CROSS_TARGET=$* ONE_SOURCE=$(or $(ONE_SOURCE),yes)
$(CROSS_TARGET)-tcc$(EXESUF): $(TCC_FILES)
$(CC) -o $@ $^ $(DEFINES) $(CFLAGS) $(LIBS) $(LDFLAGS)
$(CC) -o $@ $^ $(LIBS) $(LDFLAGS)
# profiling version
tcc_p$(EXESUF): $($T_FILES)
@ -214,13 +214,14 @@ libtcc.a: $(LIBTCC_OBJ)
# dynamic libtcc library
libtcc.so: $(LIBTCC_OBJ)
$(CC) -shared -Wl,-soname,$@ -o $@ $^ $(CFLAGS) $(LDFLAGS)
$(CC) -shared -Wl,-soname,$@ -o $@ $^ $(LDFLAGS)
libtcc.so: CFLAGS+=-fPIC
libtcc.so: LDFLAGS+=-fPIC
# windows dynamic libtcc library
libtcc.dll : $(LIBTCC_OBJ)
$(CC) -shared -o $@ $^ $(CFLAGS) $(LDFLAGS)
$(CC) -shared -o $@ $^ $(LDFLAGS)
libtcc.def : libtcc.dll tcc$(EXESUF)
./tcc$(EXESUF) -impdef $< -o $@
@ -229,12 +230,13 @@ libtcc.dll : DEFINES += -DLIBTCC_AS_DLL
# TinyCC runtime libraries
libtcc1.a : tcc$(EXESUF) FORCE
@$(MAKE) -C lib
@$(MAKE) -C lib DEFINES="$(DEF-$T)"
# Cross libtcc1.a
libtcc1-%.a : %-tcc$(EXESUF) FORCE
@$(MAKE) -C lib CROSS_TARGET=$*
@$(MAKE) -C lib DEFINES="$(DEF-$*)" CROSS_TARGET=$*
.PRECIOUS: libtcc1-%.a
FORCE:
# --------------------------------------------------------------------------

2
arm-gen.c
View File

@ -179,6 +179,7 @@ ST_FUNC void arm_init(struct TCCState *s)
#define func_ldouble_type func_old_type
ST_FUNC void arm_init(struct TCCState *s)
{
#if 0
#if !defined (TCC_ARM_VFP)
tcc_warning("Support for FPA is deprecated and will be removed in next"
" release");
@ -187,6 +188,7 @@ ST_FUNC void arm_init(struct TCCState *s)
tcc_warning("Support for OABI is deprecated and will be removed in next"
" release");
#endif
#endif
}
#endif

53
lib/Makefile
View File

@ -17,61 +17,54 @@ XFLAGS-win = -B$(TOPSRC)/win32 -I$(TOPSRC)/include
XFLAGS = $(XFLAGS$(XCFG))
XCFG = $(or $(findstring -win,$T),-unx)
ifeq ($(X),)
BCHECK_O = bcheck.o
ifeq "$T" "arm"
# using gcc ("make armlib-usegcc=no" to use tcc)
armlib-usegcc ?= no
ifeq "$($(X)$(T)lib-usegcc)" "yes"
XCC = $(CC)
XAR = $(AR)
XFLAGS = $(CFLAGS) -fPIC
endif
endif
# only for native compiler
$(X)BCHECK_O = bcheck.o
ifeq ($(CONFIG_musl),yes)
BCHECK_O =
endif
ifdef CONFIG_OSX
XFLAGS += -D_ANSI_SOURCE
endif
ifeq ($(CONFIG_musl),yes)
BCHECK_O =
endif
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
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)
TGT-i386 = -DTCC_TARGET_I386
OBJ-x86_64 = $(X86_64_O) $(BCHECK_O)
TGT-x86_64 = -DTCC_TARGET_X86_64
OBJ-x86_64-osx = $(X86_64_O)
TGT-x86_64-osx = -DTCC_TARGET_X86_64 -DTCC_TARGET_MACHO
OBJ-arm = $(ARM_O)
TGT-arm = -DTCC_TARGET_ARM
OBJ-arm64 = $(ARM64_O)
TGT-arm64 = -DTCC_TARGET_ARM64
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)
TGT-i386-win32 = -DTCC_TARGET_I386 -DTCC_TARGET_PE
OBJ-x86_64-win32 = $(X86_64_O) chkstk.o bcheck.o $(WIN_O)
TGT-x86_64-win32 = -DTCC_TARGET_X86_64 -DTCC_TARGET_PE
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)
TGT-arm-wince = -DTCC_TARGET_ARM -DTCC_TARGET_PE
$(BIN) : $(patsubst %.o,$(X)%.o,$(OBJ-$T))
$(XAR) rcs $@ $^
$(X)%.o : %.c
$(XCC) -c $< -o $@ $(TGT-$T) $(XFLAGS)
$(XCC) -c $< -o $@ $(DEFINES) $(XFLAGS)
$(X)%.o : %.S
$(XCC) -c $< -o $@ $(TGT-$T) $(XFLAGS)
$(XCC) -c $< -o $@ $(DEFINES) $(XFLAGS)
$(X)crt1w.o : crt1.c
$(X)wincrt1w.o : wincrt1.c

58
lib/armflush.c Normal file
View File

@ -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
}

128
lib/libtcc1.c
View File

@ -550,6 +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;
@ -575,6 +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 TCC_TARGET_ARM
unsigned long long __fixunsxfdi (long double a1)
{
register union ldouble_long dl1;
@ -598,121 +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__ */
#if defined TCC_TARGET_ARM && !defined __TINYC__
#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 */

65
lib/va_list.c Normal file
View File

@ -0,0 +1,65 @@
/* va_list.c - tinycc support for va_list on X86_64 */
#if defined TCC_TARGET_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

13
tccgen.c
View File

@ -4578,9 +4578,12 @@ ST_FUNC void unary(void)
#ifdef TCC_TARGET_PE
case TOK_builtin_va_start:
parse_builtin_params(0, "ee");
if ((vtop->r & VT_VALMASK) != VT_LOCAL)
r = vtop->r & VT_VALMASK;
if (r == VT_LLOCAL)
r = VT_LOCAL;
if (r != VT_LOCAL)
tcc_error("__builtin_va_start expects a local variable");
vtop->r &= ~VT_LVAL;
vtop->r = r;
vtop->type = char_pointer_type;
vtop->c.i += 8;
vstore();
@ -6169,7 +6172,11 @@ static void init_putv(CType *type, Section *sec, unsigned long c)
if (sizeof(long double) == LDOUBLE_SIZE)
*(long double *)ptr = vtop->c.ld;
else if (sizeof(double) == LDOUBLE_SIZE)
*(double *)ptr = vtop->c.ld;
*(double *)ptr = (double)vtop->c.ld;
#if (defined __i386__ || defined __x86_64__) && (defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64)
else if (sizeof (long double) >= 10)
memcpy(memset(ptr, 0, LDOUBLE_SIZE), &vtop->c.ld, 10);
#endif
else
tcc_error("can't cross compile long double constants");
break;

11
tests/abitest.c
View File

@ -637,10 +637,13 @@ int main(int argc, char **argv) {
RUN_TEST(ret_longdouble_test);
RUN_TEST(ret_2float_test);
RUN_TEST(ret_2double_test);
/* RUN_TEST(ret_8plus2double_test); currently broken on x86_64 */
/* RUN_TEST(ret_6plus2longlong_test); currently broken on x86_64 */
/* RUN_TEST(ret_mixed_test); currently broken on x86_64 */
/* RUN_TEST(ret_mixed2_test); currently broken on x86_64 */
#if !defined __x86_64__ || defined _WIN32
/* currently broken on x86_64 linux */
RUN_TEST(ret_8plus2double_test);
RUN_TEST(ret_6plus2longlong_test);
RUN_TEST(ret_mixed_test);
RUN_TEST(ret_mixed2_test);
#endif
RUN_TEST(ret_mixed3_test);
RUN_TEST(reg_pack_test);
RUN_TEST(reg_pack_longlong_test);

10
tests/tcctest.c
View File

@ -2044,13 +2044,6 @@ void bitfield_test(void)
else
printf("st1.f2 != -1\n");
#ifndef __i386__
/* on i386 we don't correctly support long long bit-fields.
The bitfields can straddle long long boundaries (at least with
GCC bitfield layout) and code generation isn't prepared for this
(would have to work with two words in that case). */
/* bit sizes below must be bigger than 32 since GCC doesn't allow
long-long bitfields whose size is not bigger than int */
struct sbf2 {
long long f1 : 45;
long long : 2;
@ -2063,7 +2056,7 @@ void bitfield_test(void)
st2.f3 = a;
st2.f2++;
printf("%lld %lld %lld\n", st2.f1, st2.f2, st2.f3);
#endif
#if 0
Disabled for now until further clarification re GCC compatibility
struct sbf3 {
@ -2076,6 +2069,7 @@ void bitfield_test(void)
} st3;
printf("sizeof(st3) = %d\n", sizeof(st3));
#endif
struct sbf4 {
int x : 31;
char y : 2;