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-rw-r--r--libc/sysdeps/linux/i386/Makefile13
-rw-r--r--libc/sysdeps/linux/i386/bits/atomicity.h57
-rw-r--r--libc/sysdeps/linux/i386/bits/machine-gmon.h41
-rw-r--r--libc/sysdeps/linux/i386/bits/profil-counter.h27
-rw-r--r--libc/sysdeps/linux/i386/bits/sigcontextinfo.h51
-rw-r--r--libc/sysdeps/linux/i386/bits/stackinfo.h28
-rw-r--r--libc/sysdeps/linux/i386/crt0.S7
-rw-r--r--libc/sysdeps/linux/i386/mcount.S54
8 files changed, 276 insertions, 2 deletions
diff --git a/libc/sysdeps/linux/i386/Makefile b/libc/sysdeps/linux/i386/Makefile
index 9ca790cff..c7e1db947 100644
--- a/libc/sysdeps/linux/i386/Makefile
+++ b/libc/sysdeps/linux/i386/Makefile
@@ -21,10 +21,14 @@ include $(TOPDIR)Rules.mak
ASFLAGS=$(CFLAGS)
CRT0_SRC = crt0.S
-CRT0_OBJ = crt0.o crt1.o
+CRT0_OBJ = crt0.o crt1.o gcrt1.o
+CRT0_DEPS=gmon-start.S
SSRC=__longjmp.S vfork.S clone.S setjmp.S bsd-setjmp.S \
bsd-_setjmp.S syscall.S
+ifeq ($(strip $(UCLIBC_PROFILING)),y)
+SSRC+=mcount.S
+endif
SOBJS=$(patsubst %.S,%.o, $(SSRC))
CSRC=brk.c sigaction.c
@@ -53,6 +57,13 @@ $(COBJS): %.o : %.c
$(CC) $(CFLAGS) -c $< -o $@
$(STRIPTOOL) -x -R .note -R .comment $*.o
+ifeq ($(strip $(UCLIBC_PROFILING)),y)
+SAFECFLAGS := $(subst -g,,$(CFLAGS))
+gmon-start.S: ../common/gmon-start.c
+ $(CC) $(SAFECFLAGS) -c $< -S -o $*.S
+gcrt1.o: $(CRT0_DEPS)
+endif
+
headers:
diff --git a/libc/sysdeps/linux/i386/bits/atomicity.h b/libc/sysdeps/linux/i386/bits/atomicity.h
new file mode 100644
index 000000000..df2fb8184
--- /dev/null
+++ b/libc/sysdeps/linux/i386/bits/atomicity.h
@@ -0,0 +1,57 @@
+/* Low-level functions for atomic operations. ix86 version, x >= 4.
+ Copyright (C) 1997, 2000, 2001 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _ATOMICITY_H
+#define _ATOMICITY_H 1
+
+#include <inttypes.h>
+
+
+static inline uint32_t
+__attribute__ ((unused))
+exchange_and_add (volatile uint32_t *mem, uint32_t val)
+{
+ register uint32_t result;
+ __asm__ __volatile__ ("lock; xaddl %0,%1"
+ : "=r" (result), "=m" (*mem) : "0" (val), "1" (*mem));
+ return result;
+}
+
+static inline void
+__attribute__ ((unused))
+atomic_add (volatile uint32_t *mem, int val)
+{
+ __asm__ __volatile__ ("lock; addl %1,%0"
+ : "=m" (*mem) : "ir" (val), "0" (*mem));
+}
+
+static inline char
+__attribute__ ((unused))
+compare_and_swap (volatile long int *p, long int oldval, long int newval)
+{
+ char ret;
+ long int readval;
+
+ __asm__ __volatile__ ("lock; cmpxchgl %3, %1; sete %0"
+ : "=q" (ret), "=m" (*p), "=a" (readval)
+ : "r" (newval), "1" (*p), "a" (oldval));
+ return ret;
+}
+
+#endif /* atomicity.h */
diff --git a/libc/sysdeps/linux/i386/bits/machine-gmon.h b/libc/sysdeps/linux/i386/bits/machine-gmon.h
new file mode 100644
index 000000000..6c860bc01
--- /dev/null
+++ b/libc/sysdeps/linux/i386/bits/machine-gmon.h
@@ -0,0 +1,41 @@
+/* i386-specific implementation of profiling support.
+ Copyright (C) 1997, 2002 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sysdep.h>
+
+/* We need a special version of the `mcount' function since for ix86 it
+ must not clobber any register. This has several reasons:
+ - there is a bug in gcc as of version 2.7.2.2 which prohibits the
+ use of profiling together with nested functions
+ - the ELF `fixup' function uses GCC's regparm feature
+ - some (future) systems might want to pass parameters in registers. */
+
+/* We must not pollute the global namespace. */
+#define mcount_internal __mcount_internal
+
+extern void mcount_internal (u_long frompc, u_long selfpc);
+
+#define _MCOUNT_DECL(frompc, selfpc) \
+void mcount_internal (u_long frompc, u_long selfpc)
+
+
+/* Define MCOUNT as empty since we have the implementation in another
+ file. */
+#define MCOUNT
diff --git a/libc/sysdeps/linux/i386/bits/profil-counter.h b/libc/sysdeps/linux/i386/bits/profil-counter.h
new file mode 100644
index 000000000..80933a36f
--- /dev/null
+++ b/libc/sysdeps/linux/i386/bits/profil-counter.h
@@ -0,0 +1,27 @@
+/* Low-level statistical profiling support function. Linux/i386 version.
+ Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <signal.h>
+#include <bits/sigcontextinfo.h>
+
+static void
+profil_counter (int signo, SIGCONTEXT scp)
+{
+ profil_count ((void *) GET_PC (scp));
+}
diff --git a/libc/sysdeps/linux/i386/bits/sigcontextinfo.h b/libc/sysdeps/linux/i386/bits/sigcontextinfo.h
new file mode 100644
index 000000000..6530ba6f3
--- /dev/null
+++ b/libc/sysdeps/linux/i386/bits/sigcontextinfo.h
@@ -0,0 +1,51 @@
+/* Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#define SIGCONTEXT struct sigcontext
+#define SIGCONTEXT_EXTRA_ARGS
+#define GET_PC(ctx) ((void *) ctx.eip)
+#define GET_FRAME(ctx) ((void *) ctx.ebp)
+#define GET_STACK(ctx) ((void *) ctx.esp_at_signal)
+#define CALL_SIGHANDLER(handler, signo, ctx) \
+do { \
+ int __tmp1, __tmp2, __tmp3, __tmp4; \
+ __asm __volatile ("movl\t%%esp, %%edi\n\t" \
+ "andl\t$-16, %%esp\n\t" \
+ "subl\t%8, %%esp\n\t" \
+ "movl\t%%edi, %c8-4(%%esp)\n\t" \
+ "movl\t%1, 0(%%esp)\n\t" \
+ "leal\t4(%%esp), %%edi\n\t" \
+ "cld\n\t" \
+ "rep\tmovsl\n\t" \
+ "call\t*%0\n\t" \
+ "cld\n\t" \
+ "movl\t%9, %%ecx\n\t" \
+ "subl\t%%edi, %%esi\n\t" \
+ "leal\t4(%%esp,%%esi,1), %%edi\n\t" \
+ "leal\t4(%%esp), %%esi\n\t" \
+ "rep\tmovsl\n\t" \
+ "movl\t%c8-4(%%esp), %%esp\n\t" \
+ : "=a" (__tmp1), "=d" (__tmp2), "=S" (__tmp3), \
+ "=c" (__tmp4) \
+ : "0" (handler), "1" (signo), "2" (&ctx), \
+ "3" (sizeof (struct sigcontext) / 4), \
+ "n" ((sizeof (struct sigcontext) + 19) & ~15), \
+ "i" (sizeof (struct sigcontext) / 4) \
+ : "cc", "edi"); \
+} while (0)
diff --git a/libc/sysdeps/linux/i386/bits/stackinfo.h b/libc/sysdeps/linux/i386/bits/stackinfo.h
new file mode 100644
index 000000000..a9a6745aa
--- /dev/null
+++ b/libc/sysdeps/linux/i386/bits/stackinfo.h
@@ -0,0 +1,28 @@
+/* Copyright (C) 1999 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* This file contains a bit of information about the stack allocation
+ of the processor. */
+
+#ifndef _STACKINFO_H
+#define _STACKINFO_H 1
+
+/* On x86 the stack grows down. */
+#define _STACK_GROWS_DOWN 1
+
+#endif /* stackinfo.h */
diff --git a/libc/sysdeps/linux/i386/crt0.S b/libc/sysdeps/linux/i386/crt0.S
index e871c0876..3930a1690 100644
--- a/libc/sysdeps/linux/i386/crt0.S
+++ b/libc/sysdeps/linux/i386/crt0.S
@@ -74,7 +74,7 @@ _start:
pushl %ebp /* callers %ebp (frame pointer) */
movl %esp,%ebp /* mark callers stack frame as invalid */
-#if defined L_crt1 && defined __UCLIBC_CTOR_DTOR__
+#if (defined L_crt1 || defined L_gcrt1 ) && defined __UCLIBC_CTOR_DTOR__
/* Push .init and .fini arguments to __uClibc_start_main() on the stack */
pushl $_fini
pushl $_init
@@ -99,3 +99,8 @@ _start:
hlt
.size _start,.-_start
+
+#if defined L_gcrt1
+# include "./gmon-start.S"
+#endif
+
diff --git a/libc/sysdeps/linux/i386/mcount.S b/libc/sysdeps/linux/i386/mcount.S
new file mode 100644
index 000000000..704a7b851
--- /dev/null
+++ b/libc/sysdeps/linux/i386/mcount.S
@@ -0,0 +1,54 @@
+/* i386-specific implemetation of profiling support.
+ Copyright (C) 1997, 2002 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+
+/* We need a special version of the `mcount' function since for ix86 it
+ must not clobber any register. This has several reasons:
+ - there is a bug in gcc as of version 2.7.2.2 which prohibits the
+ use of profiling together with nested functions
+ - the ELF `fixup' function uses GCC's regparm feature
+ - some (future) systems might want to pass parameters in registers. */
+
+ .globl _mcount
+ .type _mcount,@function;
+ .align 1<<4
+_mcount:
+ /* Save the caller-clobbered registers. */
+ pushl %eax
+ pushl %ecx
+ pushl %edx
+
+ movl 12(%esp), %edx
+ movl 4(%ebp), %eax
+
+ /* No need to access the PLT or GOT, __mcount_internal is an
+ internal function and we can make a relative call. */
+ call __mcount_internal
+
+ /* Pop the saved registers. Please note that `mcount' has no
+ return value. */
+ popl %edx
+ popl %ecx
+ popl %eax
+ ret
+ .size _mcount,.-_mcount;
+
+#undef mcount
+.weak mcount ; mcount = _mcount
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 16:35:41 +0000