MIPS support to libm, libdl and libthread_db
Change-Id: I9106721af7fe0cd45df82976250db0d300a20117
Signed-off-by: Raghu Gandham <raghu@mips.com>
diff --git a/libdl/libdl.c b/libdl/libdl.c
index 872c0c9..1d51c37 100644
--- a/libdl/libdl.c
+++ b/libdl/libdl.c
@@ -26,11 +26,11 @@
#ifdef __arm__
void *dl_unwind_find_exidx(void *pc, int *pcount) { return 0; }
-#elif defined(__i386__) || defined(__sh__)
+#elif defined(__i386__) || defined(__sh__) || defined(__mips__)
/* we munge the cb definition so we don't have to include any headers here.
* It won't affect anything since these are just symbols anyway */
int dl_iterate_phdr(int (*cb)(void *info, void *size, void *data),
void *data) { return 0; }
#else
-#error Unsupported architecture. Only arm and x86 are supported.
+#error Unsupported architecture. Only mips, arm and x86 are supported.
#endif
diff --git a/libm/Android.mk b/libm/Android.mk
index 57e4d4c..07cb7db 100644
--- a/libm/Android.mk
+++ b/libm/Android.mk
@@ -152,6 +152,7 @@
src/s_isnan.c \
src/s_modf.c
+libm_common_cflags :=
ifeq ($(TARGET_ARCH),arm)
libm_common_src_files += \
@@ -162,21 +163,29 @@
src/s_scalbnf.c
libm_common_includes = $(LOCAL_PATH)/arm
+endif
-else
- ifeq ($(TARGET_OS)-$(TARGET_ARCH),linux-x86)
- libm_common_src_files += \
+ifeq ($(TARGET_OS)-$(TARGET_ARCH),linux-x86)
+ libm_common_src_files += \
i387/fenv.c \
i387/s_scalbnl.S \
i387/s_scalbn.S \
i387/s_scalbnf.S
- libm_common_includes = $(LOCAL_PATH)/i386 $(LOCAL_PATH)/i387
- else
- $(error "Unknown architecture")
- endif
+ libm_common_includes = $(LOCAL_PATH)/i386 $(LOCAL_PATH)/i387
endif
+ifeq ($(TARGET_ARCH),mips)
+ libm_common_src_files += \
+ mips/fenv.c \
+ src/e_ldexpf.c \
+ src/s_scalbln.c \
+ src/s_scalbn.c \
+ src/s_scalbnf.c
+ libm_common_includes = $(LOCAL_PATH)/mips
+ # Need to build *rint* functions
+ libm_common_cflags += -fno-builtin-rintf -fno-builtin-rint
+endif
# libm.a
# ========================================================
@@ -188,6 +197,7 @@
LOCAL_ARM_MODE := arm
LOCAL_C_INCLUDES += $(libm_common_includes)
+LOCAL_CFLAGS := $(libm_common_cflags)
LOCAL_MODULE:= libm
@@ -206,6 +216,7 @@
LOCAL_ARM_MODE := arm
LOCAL_C_INCLUDES += $(libm_common_includes)
+LOCAL_CFLAGS := $(libm_common_cflags)
LOCAL_MODULE:= libm
diff --git a/libm/mips/Makefile.inc b/libm/mips/Makefile.inc
new file mode 100644
index 0000000..9bbfaa1
--- /dev/null
+++ b/libm/mips/Makefile.inc
@@ -0,0 +1,3 @@
+# $FreeBSD: src/lib/msun/mips/Makefile.inc,v 1.1 2008/04/26 12:20:29 imp Exp $
+
+LDBL_PREC = 53
diff --git a/libm/mips/_fpmath.h b/libm/mips/_fpmath.h
new file mode 100644
index 0000000..cb6e8c0
--- /dev/null
+++ b/libm/mips/_fpmath.h
@@ -0,0 +1,56 @@
+/*-
+ * Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD: src/lib/libc/mips/_fpmath.h,v 1.1 2008/04/26 12:07:59 imp Exp $
+ */
+
+union IEEEl2bits {
+ long double e;
+ struct {
+#ifndef __MIPSEB__
+ unsigned int manl :32;
+ unsigned int manh :20;
+ unsigned int exp :11;
+ unsigned int sign :1;
+#else
+ unsigned int sign :1;
+ unsigned int exp :11;
+ unsigned int manh :20;
+ unsigned int manl :32;
+#endif
+ } bits;
+};
+
+#define LDBL_NBIT 0
+#define mask_nbit_l(u) ((void)0)
+#define LDBL_IMPLICIT_NBIT
+
+#define LDBL_MANH_SIZE 20
+#define LDBL_MANL_SIZE 32
+
+#define LDBL_TO_ARRAY32(u, a) do { \
+ (a)[0] = (uint32_t)(u).bits.manl; \
+ (a)[1] = (uint32_t)(u).bits.manh; \
+} while(0)
diff --git a/libm/mips/fenv.c b/libm/mips/fenv.c
new file mode 100644
index 0000000..b5f52da
--- /dev/null
+++ b/libm/mips/fenv.c
@@ -0,0 +1,35 @@
+/*-
+ * Copyright (c) 2004 David Schultz <das@FreeBSD.ORG>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD: src/lib/msun/mips/fenv.c,v 1.1 2008/04/26 12:20:29 imp Exp $
+ */
+
+#include <fenv.h>
+
+/*
+ * Hopefully the system ID byte is immutable, so it's valid to use
+ * this as a default environment.
+ */
+const fenv_t __fe_dfl_env = 0;
diff --git a/libm/mips/fenv.h b/libm/mips/fenv.h
new file mode 100644
index 0000000..061a696
--- /dev/null
+++ b/libm/mips/fenv.h
@@ -0,0 +1,218 @@
+/*-
+ * Copyright (c) 2004-2005 David Schultz <das@FreeBSD.ORG>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD: src/lib/msun/mips/fenv.h,v 1.1 2008/04/26 12:20:29 imp Exp $
+ */
+
+#ifndef _FENV_H_
+#define _FENV_H_
+
+#include <sys/_types.h>
+
+typedef __uint32_t fenv_t;
+typedef __uint32_t fexcept_t;
+
+/* Exception flags */
+#define FE_INVALID 0x0001
+#define FE_DIVBYZERO 0x0002
+#define FE_OVERFLOW 0x0004
+#define FE_UNDERFLOW 0x0008
+#define FE_INEXACT 0x0010
+#define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_INEXACT | \
+ FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW)
+
+/* Rounding modes */
+#define FE_TONEAREST 0x0000
+#define FE_TOWARDZERO 0x0001
+#define FE_UPWARD 0x0002
+#define FE_DOWNWARD 0x0003
+#define _ROUND_MASK (FE_TONEAREST | FE_DOWNWARD | \
+ FE_UPWARD | FE_TOWARDZERO)
+/* __BEGIN_DECLS */
+
+/* Default floating-point environment */
+extern const fenv_t __fe_dfl_env;
+#define FE_DFL_ENV (&__fe_dfl_env)
+
+/* We need to be able to map status flag positions to mask flag positions */
+#define _FPUSW_SHIFT 16
+#define _ENABLE_MASK (FE_ALL_EXCEPT << _FPUSW_SHIFT)
+
+#ifdef ARM_HARD_FLOAT
+#define __rfs(__fpsr) __asm __volatile("rfs %0" : "=r" (*(__fpsr)))
+#define __wfs(__fpsr) __asm __volatile("wfs %0" : : "r" (__fpsr))
+#else
+#define __rfs(__fpsr)
+#define __wfs(__fpsr)
+#endif
+
+static __inline int
+feclearexcept(int __excepts)
+{
+ fexcept_t __fpsr;
+
+ __rfs(&__fpsr);
+ __fpsr &= ~__excepts;
+ __wfs(__fpsr);
+ return (0);
+}
+
+static __inline int
+fegetexceptflag(fexcept_t *__flagp, int __excepts)
+{
+ fexcept_t __fpsr;
+
+ __rfs(&__fpsr);
+ *__flagp = __fpsr & __excepts;
+ return (0);
+}
+
+static __inline int
+fesetexceptflag(const fexcept_t *__flagp, int __excepts)
+{
+ fexcept_t __fpsr;
+
+ __rfs(&__fpsr);
+ __fpsr &= ~__excepts;
+ __fpsr |= *__flagp & __excepts;
+ __wfs(__fpsr);
+ return (0);
+}
+
+static __inline int
+feraiseexcept(int __excepts)
+{
+ fexcept_t __ex = __excepts;
+
+ fesetexceptflag(&__ex, __excepts); /* XXX */
+ return (0);
+}
+
+static __inline int
+fetestexcept(int __excepts)
+{
+ fexcept_t __fpsr;
+
+ __rfs(&__fpsr);
+ return (__fpsr & __excepts);
+}
+
+static __inline int
+fegetround(void)
+{
+
+ /*
+ * Apparently, the rounding mode is specified as part of the
+ * instruction format on ARM, so the dynamic rounding mode is
+ * indeterminate. Some FPUs may differ.
+ */
+ return (-1);
+}
+
+static __inline int
+fesetround(int __round)
+{
+
+ return (-1);
+}
+
+static __inline int
+fegetenv(fenv_t *__envp)
+{
+
+ __rfs(__envp);
+ return (0);
+}
+
+static __inline int
+feholdexcept(fenv_t *__envp)
+{
+ fenv_t __env;
+
+ __rfs(&__env);
+ *__envp = __env;
+ __env &= ~(FE_ALL_EXCEPT | _ENABLE_MASK);
+ __wfs(__env);
+ return (0);
+}
+
+static __inline int
+fesetenv(const fenv_t *__envp)
+{
+
+ __wfs(*__envp);
+ return (0);
+}
+
+static __inline int
+feupdateenv(const fenv_t *__envp)
+{
+ fexcept_t __fpsr;
+
+ __rfs(&__fpsr);
+ __wfs(*__envp);
+ feraiseexcept(__fpsr & FE_ALL_EXCEPT);
+ return (0);
+}
+
+#if __BSD_VISIBLE
+
+static __inline int
+feenableexcept(int __mask)
+{
+ fenv_t __old_fpsr, __new_fpsr;
+
+ __rfs(&__old_fpsr);
+ __new_fpsr = __old_fpsr | (__mask & FE_ALL_EXCEPT) << _FPUSW_SHIFT;
+ __wfs(__new_fpsr);
+ return ((__old_fpsr >> _FPUSW_SHIFT) & FE_ALL_EXCEPT);
+}
+
+static __inline int
+fedisableexcept(int __mask)
+{
+ fenv_t __old_fpsr, __new_fpsr;
+
+ __rfs(&__old_fpsr);
+ __new_fpsr = __old_fpsr & ~((__mask & FE_ALL_EXCEPT) << _FPUSW_SHIFT);
+ __wfs(__new_fpsr);
+ return ((__old_fpsr >> _FPUSW_SHIFT) & FE_ALL_EXCEPT);
+}
+
+static __inline int
+fegetexcept(void)
+{
+ fenv_t __fpsr;
+
+ __rfs(&__fpsr);
+ return ((__fpsr & _ENABLE_MASK) >> _FPUSW_SHIFT);
+}
+
+#endif /* __BSD_VISIBLE */
+
+/* __END_DECLS */
+
+#endif /* !_FENV_H_ */
+
diff --git a/libthread_db/libthread_db.c b/libthread_db/libthread_db.c
index 86e1cf4..e749377 100644
--- a/libthread_db/libthread_db.c
+++ b/libthread_db/libthread_db.c
@@ -99,7 +99,7 @@
gEventMsgHandle.tid = gEventMsgHandle.pid;
return 0x42;
}
-#else
+#elif defined(__arm__)
pc = (void *)ptrace(PTRACE_PEEKUSR, handle->tid, (void *)60 /* r15/pc */, NULL);
if (pc == bkpt_addr) {
@@ -109,6 +109,15 @@
gEventMsgHandle.tid = gEventMsgHandle.pid;
return 0x42;
}
+#elif defined(__mips__)
+ pc = (void *)ptrace(PTRACE_PEEKUSR, handle->tid, (void *)(64*4) /* pc */, NULL);
+ if (pc == bkpt_addr) {
+ // The hook function takes the id of the new thread as it's first param,
+ // so grab it from a0
+ gEventMsgHandle.pid = ptrace(PTRACE_PEEKUSR, handle->tid, (void *)(4*4) /* a0 */, NULL);
+ gEventMsgHandle.tid = gEventMsgHandle.pid;
+ return 0x42;
+ }
#endif
return 0;
}