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authorMathias Krause <minipli@googlemail.com>2017-02-07 19:03:29 +0100
committerMartin Roth <martinroth@google.com>2017-02-17 17:25:11 +0100
commit7b681c5926d3699b33c936e34a8176833a03eaf2 (patch)
tree6ed8055eff3abda79242f285eb65a11746827522 /payloads/libpayload/arch/x86/main.c
parent9fa78c136d6a6538576fb15ccd05d8483ea05ab5 (diff)
downloadcoreboot-7b681c5926d3699b33c936e34a8176833a03eaf2.tar.xz
libpayload: x86/main - propagate return value of main()
According to coreboot’s payload API [1], the called payload should be able to return a value via %eax. Support this by changing the prototype of start_main() and pass on the return value of main() to the caller instead of discarding it. [1] https://www.coreboot.org/Payload_API Change-Id: I8442faea19cc8e04487092f8e61aa4e5cba3ba76 Signed-off-by: Mathias Krause <minipli@googlemail.com> Reviewed-on: https://review.coreboot.org/18334 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'payloads/libpayload/arch/x86/main.c')
-rw-r--r--payloads/libpayload/arch/x86/main.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/payloads/libpayload/arch/x86/main.c b/payloads/libpayload/arch/x86/main.c
index fbd4dc4e18..f9a5e2cf83 100644
--- a/payloads/libpayload/arch/x86/main.c
+++ b/payloads/libpayload/arch/x86/main.c
@@ -42,8 +42,8 @@ char *main_argv[MAX_ARGC_COUNT];
* This is our C entry function - set up the system
* and jump into the payload entry point.
*/
-void start_main(void);
-void start_main(void)
+int start_main(void);
+int start_main(void)
{
extern int main(int argc, char **argv);
@@ -67,10 +67,9 @@ void start_main(void)
* In the future we may care about the return value.
*/
- (void) main(main_argc, (main_argc != 0) ? main_argv : NULL);
-
/*
- * Returning here will go to the _leave function to return
+ * Returning from main() will go to the _leave function to return
* us to the original context.
*/
+ return main(main_argc, (main_argc != 0) ? main_argv : NULL);
}