From ab42fad00953301c0d25d71340bf194868bd3df9 Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Mon, 5 Mar 2018 16:34:03 -0500 Subject: [PATCH] ARM: linker script: factor out stuff for the DISCARD section Move common entries to vmlinux.lds.h and leave XIP and non-XIP entries in their respective file. The ARM_NOMMU_KEEP() and ARM_NOMMU_DISCARD() macros are added to be usable within the definition of ARM_DISCARD macro. Signed-off-by: Nicolas Pitre Tested-by: Chris Brandt --- arch/arm/kernel/vmlinux-xip.lds.S | 19 +++---------------- arch/arm/kernel/vmlinux.lds.S | 18 ++---------------- arch/arm/kernel/vmlinux.lds.h | 20 ++++++++++++++++++++ 3 files changed, 25 insertions(+), 32 deletions(-) diff --git a/arch/arm/kernel/vmlinux-xip.lds.S b/arch/arm/kernel/vmlinux-xip.lds.S index 0a8922b61613..4bd422966d92 100644 --- a/arch/arm/kernel/vmlinux-xip.lds.S +++ b/arch/arm/kernel/vmlinux-xip.lds.S @@ -38,20 +38,9 @@ SECTIONS * unwind sections get included. */ /DISCARD/ : { - *(.ARM.exidx.exit.text) - *(.ARM.extab.exit.text) - ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text)) - ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text)) - ARM_EXIT_DISCARD(EXIT_TEXT) - ARM_EXIT_DISCARD(EXIT_DATA) - EXIT_CALL -#ifndef CONFIG_MMU - *(.text.fixup) - *(__ex_table) -#endif + ARM_DISCARD *(.alt.smp.init) - *(.discard) - *(.discard.*) + *(.pv_table) } . = XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR); @@ -89,9 +78,7 @@ SECTIONS . = ALIGN(4); __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { __start___ex_table = .; -#ifdef CONFIG_MMU - *(__ex_table) -#endif + ARM_MMU_KEEP(*(__ex_table)) __stop___ex_table = .; } diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S index 6a6eb483d92c..b34fbafd543a 100644 --- a/arch/arm/kernel/vmlinux.lds.S +++ b/arch/arm/kernel/vmlinux.lds.S @@ -38,22 +38,10 @@ SECTIONS * unwind sections get included. */ /DISCARD/ : { - *(.ARM.exidx.exit.text) - *(.ARM.extab.exit.text) - ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text)) - ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text)) - ARM_EXIT_DISCARD(EXIT_TEXT) - ARM_EXIT_DISCARD(EXIT_DATA) - EXIT_CALL -#ifndef CONFIG_MMU - *(.text.fixup) - *(__ex_table) -#endif + ARM_DISCARD #ifndef CONFIG_SMP_ON_UP *(.alt.smp.init) #endif - *(.discard) - *(.discard.*) } . = PAGE_OFFSET + TEXT_OFFSET; @@ -98,9 +86,7 @@ SECTIONS . = ALIGN(4); __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { __start___ex_table = .; -#ifdef CONFIG_MMU - *(__ex_table) -#endif + ARM_MMU_KEEP(*(__ex_table)) __stop___ex_table = .; } diff --git a/arch/arm/kernel/vmlinux.lds.h b/arch/arm/kernel/vmlinux.lds.h index 0a86e8a1119e..1258b66487b2 100644 --- a/arch/arm/kernel/vmlinux.lds.h +++ b/arch/arm/kernel/vmlinux.lds.h @@ -17,6 +17,14 @@ #define ARM_EXIT_DISCARD(x) x #endif +#ifdef CONFIG_MMU +#define ARM_MMU_KEEP(x) x +#define ARM_MMU_DISCARD(x) +#else +#define ARM_MMU_KEEP(x) +#define ARM_MMU_DISCARD(x) x +#endif + #define PROC_INFO \ . = ALIGN(4); \ VMLINUX_SYMBOL(__proc_info_begin) = .; \ @@ -38,3 +46,15 @@ *(.hyp.idmap.text) \ VMLINUX_SYMBOL(__hyp_idmap_text_end) = .; +#define ARM_DISCARD \ + *(.ARM.exidx.exit.text) \ + *(.ARM.extab.exit.text) \ + ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text)) \ + ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text)) \ + ARM_EXIT_DISCARD(EXIT_TEXT) \ + ARM_EXIT_DISCARD(EXIT_DATA) \ + EXIT_CALL \ + ARM_MMU_DISCARD(*(.text.fixup)) \ + ARM_MMU_DISCARD(*(__ex_table)) \ + *(.discard) \ + *(.discard.*) -- 2.30.2