From: Willy Tarreau <w@xxxxxx>
[ Upstream commit dffeb81af5fe5eedccf5ea4a8a120d8c3accd26e ]
By doing so we can link together multiple C files that have been compiled
with nolibc and which each have a _start symbol.
Signed-off-by: Willy Tarreau <w@xxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
Stable-dep-of: 184177c3d6e0 ("tools/nolibc: restore mips branch ordering in the _start block")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
tools/include/nolibc/arch-aarch64.h | 1 +
tools/include/nolibc/arch-arm.h | 1 +
tools/include/nolibc/arch-i386.h | 1 +
tools/include/nolibc/arch-mips.h | 1 +
tools/include/nolibc/arch-riscv.h | 1 +
tools/include/nolibc/arch-x86_64.h | 1 +
6 files changed, 6 insertions(+)
diff --git a/tools/include/nolibc/arch-aarch64.h b/tools/include/nolibc/arch-aarch64.h
index 443de5fb7f54..87d9e434820c 100644
--- a/tools/include/nolibc/arch-aarch64.h
+++ b/tools/include/nolibc/arch-aarch64.h
@@ -183,6 +183,7 @@ struct sys_stat_struct {
/* startup code */
asm(".section .text\n"
+ ".weak _start\n"
".global _start\n"
"_start:\n"
"ldr x0, [sp]\n" // argc (x0) was in the stack
diff --git a/tools/include/nolibc/arch-arm.h b/tools/include/nolibc/arch-arm.h
index 66f687ad987f..001a3c8c9ad5 100644
--- a/tools/include/nolibc/arch-arm.h
+++ b/tools/include/nolibc/arch-arm.h
@@ -176,6 +176,7 @@ struct sys_stat_struct {
/* startup code */
asm(".section .text\n"
+ ".weak _start\n"
".global _start\n"
"_start:\n"
#if defined(__THUMBEB__) || defined(__THUMBEL__)
diff --git a/tools/include/nolibc/arch-i386.h b/tools/include/nolibc/arch-i386.h
index 32f42e2cee26..d7e4d53325a3 100644
--- a/tools/include/nolibc/arch-i386.h
+++ b/tools/include/nolibc/arch-i386.h
@@ -175,6 +175,7 @@ struct sys_stat_struct {
*
*/
asm(".section .text\n"
+ ".weak _start\n"
".global _start\n"
"_start:\n"
"pop %eax\n" // argc (first arg, %eax)
diff --git a/tools/include/nolibc/arch-mips.h b/tools/include/nolibc/arch-mips.h
index e330201dde6a..c9a6aac87c6d 100644
--- a/tools/include/nolibc/arch-mips.h
+++ b/tools/include/nolibc/arch-mips.h
@@ -190,6 +190,7 @@ struct sys_stat_struct {
/* startup code, note that it's called __start on MIPS */
asm(".section .text\n"
+ ".weak __start\n"
".set nomips16\n"
".global __start\n"
".set noreorder\n"
diff --git a/tools/include/nolibc/arch-riscv.h b/tools/include/nolibc/arch-riscv.h
index 9d5ff78f606b..bc10b7b5706d 100644
--- a/tools/include/nolibc/arch-riscv.h
+++ b/tools/include/nolibc/arch-riscv.h
@@ -184,6 +184,7 @@ struct sys_stat_struct {
/* startup code */
asm(".section .text\n"
+ ".weak _start\n"
".global _start\n"
"_start:\n"
".option push\n"
diff --git a/tools/include/nolibc/arch-x86_64.h b/tools/include/nolibc/arch-x86_64.h
index 83c4b458ada7..fe517c16cd4d 100644
--- a/tools/include/nolibc/arch-x86_64.h
+++ b/tools/include/nolibc/arch-x86_64.h
@@ -198,6 +198,7 @@ struct sys_stat_struct {
*
*/
asm(".section .text\n"
+ ".weak _start\n"
".global _start\n"
"_start:\n"
"pop %rdi\n" // argc (first arg, %rdi)
--
2.35.1
