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Add __clear_cache implementation in libtcc1

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Add __clear_cache function for flushing caches to libtcc1.
This commit is contained in:
Thomas Preud'homme 2013-02-28 16:55:10 +01:00
parent b7d017dec8
commit fbb4841606
3 changed files with 36 additions and 2 deletions
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3
Makefile
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@ -66,7 +66,7 @@ NATIVE_DEFINES_$(CONFIG_i386) += -DTCC_TARGET_I386
NATIVE_DEFINES_$(CONFIG_x86-64) += -DTCC_TARGET_X86_64
NATIVE_DEFINES_$(CONFIG_WIN32) += -DTCC_TARGET_PE
NATIVE_DEFINES_$(CONFIG_uClibc) += -DTCC_UCLIBC
NATIVE_DEFINES_$(CONFIG_arm) += -DTCC_TARGET_ARM -DWITHOUT_LIBTCC
NATIVE_DEFINES_$(CONFIG_arm) += -DTCC_TARGET_ARM
NATIVE_DEFINES_$(CONFIG_arm_eabihf) += -DTCC_ARM_EABI -DTCC_ARM_HARDFLOAT
NATIVE_DEFINES_$(CONFIG_arm_eabi) += -DTCC_ARM_EABI
NATIVE_DEFINES_$(CONFIG_arm_vfp) += -DTCC_ARM_VFP
@ -122,6 +122,7 @@ LIBTCC1=libtcc1.a
else ifeq ($(ARCH),arm)
NATIVE_FILES=$(ARM_FILES)
PROGS_CROSS=$(I386_CROSS) $(X64_CROSS) $(WIN32_CROSS) $(WIN64_CROSS) $(C67_CROSS)
LIBTCC1=libtcc1.a
endif
ifeq ($(TARGETOS),Darwin)

11
lib/Makefile
View File

@ -24,6 +24,10 @@ ifndef TARGET
ifneq ($(TARGETOS),Darwin)
XCC = $(CC)
endif
else
ifeq ($(ARCH),arm)
TARGET = arm
endif
endif
endif
endif
@ -41,6 +45,7 @@ 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
ARM_O = libtcc1.o
WIN32_O = $(I386_O) crt1.o wincrt1.o dllcrt1.o dllmain.o chkstk.o
WIN64_O = $(X86_64_O) crt1.o wincrt1.o dllcrt1.o dllmain.o chkstk.o
@ -65,12 +70,18 @@ ifeq "$(TARGET)" "x86_64"
OBJ = $(addprefix $(DIR)/,$(X86_64_O))
TGT = -DTCC_TARGET_X86_64
XCC ?= $(TCC) -B$(TOP)
else
ifeq "$(TARGET)" "arm"
OBJ = $(addprefix $(DIR)/,$(ARM_O))
TGT = -DTCC_TARGET_ARM
XCC ?= $(TCC) -B$(TOP)
else
$(error libtcc1.a not supported on target '$(TARGET)')
endif
endif
endif
endif
endif
XFLAGS = $(CPPFLAGS) $(CFLAGS) $(TGT)

24
lib/libtcc1.c
View File

@ -107,7 +107,7 @@ union float_long {
};
/* XXX: we don't support several builtin supports for now */
#ifndef __x86_64__
#if !defined(__x86_64__) && !defined(__arm__)
/* XXX: use gcc/tcc intrinsic ? */
#if defined(__i386__)
@ -713,6 +713,28 @@ void __clear_cache(char *beginning, char *end)
{
}
#elif defined(__arm__)
#define _GNU_SOURCE
#include <unistd.h>
#include <sys/syscall.h>
void __clear_cache(char *beginning, char *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);
#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
}
#else
#warning __clear_cache not defined for this architecture, avoid using tcc -run
#endif