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authorJordan Crouse <jordan.crouse@amd.com>2008-05-20 20:10:49 +0000
committerJordan Crouse <jordan.crouse@amd.com>2008-05-20 20:10:49 +0000
commit9dac1b4cca496e5293ca888d4f08411d8580ca08 (patch)
tree72bb2bcbae3f6c61cad69fe338cba2efb37cf776 /payloads/libpayload/libc
parent506980808d2f525e294cdd364b2b4e08276ab8d9 (diff)
downloadcoreboot-9dac1b4cca496e5293ca888d4f08411d8580ca08.tar.xz
libpayload: Add an exec() and i386_do_exec() function
Add functions for libpayload to execute other payloads in memory, and have those functions return cleanly. Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> Acked-by: Uwe Hermann <uwe@hermann-uwe.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3338 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'payloads/libpayload/libc')
-rw-r--r--payloads/libpayload/libc/Makefile.inc2
-rw-r--r--payloads/libpayload/libc/exec.c50
2 files changed, 51 insertions, 1 deletions
diff --git a/payloads/libpayload/libc/Makefile.inc b/payloads/libpayload/libc/Makefile.inc
index 0e2fba8d66..9b7a4d6d25 100644
--- a/payloads/libpayload/libc/Makefile.inc
+++ b/payloads/libpayload/libc/Makefile.inc
@@ -29,4 +29,4 @@
TARGETS-y += libc/malloc.o libc/printf.o libc/console.o libc/string.o
TARGETS-y += libc/memory.o libc/ctype.o libc/ipchecksum.o libc/lib.o
-TARGETS-y += libc/rand.o libc/time.o libc/lar.o
+TARGETS-y += libc/rand.o libc/time.o libc/lar.o libc/exec.o
diff --git a/payloads/libpayload/libc/exec.c b/payloads/libpayload/libc/exec.c
new file mode 100644
index 0000000000..888601dba8
--- /dev/null
+++ b/payloads/libpayload/libc/exec.c
@@ -0,0 +1,50 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ *
+ * 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.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * 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.
+ */
+
+#include <libpayload.h>
+
+#ifdef CONFIG_TARGET_I386
+extern void i386_do_exec(long addr, int argc, char **argv, int *ret);
+#endif
+
+/**
+ * Execute code in memory
+ *
+ * @param ptr The entry point to jump to
+ * @return Return the return value from the entry point
+ */
+int exec(long addr, int argc, char **argv)
+{
+ int val = -1;
+
+#ifdef CONFIG_TARGET_I386
+ i386_do_exec(addr, argc, argv, &val);
+#endif
+ return val;
+}