diff mbox series

[Concept,11/18] ulib: Add linker script for shared library build

Message ID 20250904130459.848794-12-sjg@u-boot.org
State New
Headers
Series ulib: Introduce building U-Boot as a shared library |

Commit Message

Simon Glass Sept. 4, 2025, 1:04 p.m. UTC 
  From: Simon Glass <sjg@chromium.org>

Add a proper linker script (u-boot-lib.lds) for building libu-boot.so to
ensure correct section alignment and placement, particularly for the
linker lists.

Co-developed-by: Claude <noreply@anthropic.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
---

 arch/sandbox/cpu/u-boot-lib.lds | 88 +++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 arch/sandbox/cpu/u-boot-lib.lds
diff mbox series

Patch

diff --git a/arch/sandbox/cpu/u-boot-lib.lds b/arch/sandbox/cpu/u-boot-lib.lds
new file mode 100644
index 00000000000..f57292b0a8d
--- /dev/null
+++ b/arch/sandbox/cpu/u-boot-lib.lds
@@ -0,0 +1,88 @@ 
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2025 Canonical
+ * Written by Simon Glass <simon.glass@canonical.com>
+ *
+ * Linker script for U-Boot shared library (libu-boot.so)
+ */
+
+SECTIONS
+{
+	/* Text sections first */
+	.text : {
+		*(.text*)
+	}
+
+	. = ALIGN(32);
+	__u_boot_list : {
+		KEEP(*(SORT(__u_boot_list*)));
+	}
+
+	_u_boot_sandbox_getopt : {
+		*(_u_boot_sandbox_getopt_start)
+		KEEP(*(_u_boot_sandbox_getopt))
+		*(_u_boot_sandbox_getopt_end)
+	}
+
+	efi_runtime : {
+		__efi_runtime_start = .;
+		*(efi_runtime_text)
+		*(efi_runtime_data)
+		__efi_runtime_stop = .;
+	}
+
+	efi_runtime_rel : {
+		__efi_runtime_rel_start = .;
+		*(.relefi_runtime_text)
+		*(.relefi_runtime_data)
+		__efi_runtime_rel_stop = .;
+	}
+
+	/* Read-only data */
+	. = ALIGN(8);
+	.rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
+
+	/* Data sections */
+	. = ALIGN(8);
+	.data : {
+		*(.data*)
+	}
+
+	/* BSS section */
+	. = ALIGN(8);
+	.bss : {
+		__bss_start = .;
+		*(.bss*)
+		*(COMMON)
+		. = ALIGN(8);
+		__bss_end = .;
+	}
+
+	/* Dynamic linking sections for shared library */
+	.dynamic : { *(.dynamic) }
+	.dynsym : {
+		__dyn_sym_start = .;
+		*(.dynsym)
+		__dyn_sym_end = .;
+	}
+	.dynstr : { *(.dynstr) }
+	.gnu.hash : { *(.gnu.hash) }
+	.hash : { *(.hash) }
+	.got : { *(.got) }
+	.got.plt : { *(.got.plt) }
+	.plt : { *(.plt) }
+	.rela.dyn : { *(.rela.dyn) }
+	.rela.plt : { *(.rela.plt) }
+
+	/* Debugging sections */
+	.debug_info 0 : { *(.debug_info) }
+	.debug_abbrev 0 : { *(.debug_abbrev) }
+	.debug_aranges 0 : { *(.debug_aranges) }
+	.debug_ranges 0 : { *(.debug_ranges) }
+	.debug_line 0 : { *(.debug_line) }
+	.debug_str 0 : { *(.debug_str) }
+	.debug_frame 0 : { *(.debug_frame) }
+	.debug_loc 0 : { *(.debug_loc) }
+
+	/DISCARD/ : { *(.note*) }
+}