diff --git a/arch/s390/Makefile b/arch/s390/Makefile index de54cfc6109d833017b29b6e115549aad2601d53..494bb9ad5edfb388a6567fa597dbe7e139cb806c 100644 --- a/arch/s390/Makefile +++ b/arch/s390/Makefile @@ -90,6 +90,7 @@ endif KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare +KBUILD_CFLAGS += -fno-asynchronous-unwind-tables KBUILD_AFLAGS += $(aflags-y) OBJCOPYFLAGS := -O binary diff --git a/arch/s390/include/asm/dwarf.h b/arch/s390/include/asm/dwarf.h new file mode 100644 index 0000000000000000000000000000000000000000..dffdb81e534f836f5361d2a92dd3e6b1a8c5e575 --- /dev/null +++ b/arch/s390/include/asm/dwarf.h @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_S390_DWARF_H +#define _ASM_S390_DWARF_H + +#ifdef __ASSEMBLY__ + +#ifndef BUILD_VDSO + /* + * Emit CFI data in .debug_frame sections and not in .eh_frame + * sections. The .eh_frame CFI is used for runtime unwind + * information that is not being used. Hence, vmlinux.lds.S + * can discard the .eh_frame sections. + */ + .cfi_sections .debug_frame +#else + /* + * For vDSO, emit CFI data in both, .eh_frame and .debug_frame + * sections. + */ + .cfi_sections .eh_frame, .debug_frame +#endif + +#endif /* __ASSEMBLY__ */ + +#endif /* _ASM_S390_DWARF_H */ diff --git a/arch/s390/kernel/vdso32/Makefile b/arch/s390/kernel/vdso32/Makefile index 308564b9bf6864eb9af3ba9d17d1d900a0b1bfd1..c5c856f320bca47e9b64c0c35726881fb2394d1d 100644 --- a/arch/s390/kernel/vdso32/Makefile +++ b/arch/s390/kernel/vdso32/Makefile @@ -10,6 +10,9 @@ obj-vdso32 = gettimeofday.o clock_getres.o clock_gettime.o note.o getcpu.o targets := $(obj-vdso32) vdso32.so vdso32.so.dbg obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32)) +KBUILD_AFLAGS += -DBUILD_VDSO +KBUILD_CFLAGS += -DBUILD_VDSO + KBUILD_AFLAGS_31 := $(filter-out -m64,$(KBUILD_AFLAGS)) KBUILD_AFLAGS_31 += -m31 -s diff --git a/arch/s390/kernel/vdso32/clock_getres.S b/arch/s390/kernel/vdso32/clock_getres.S index f61df5253c23c55ed26b357a645b16f4ab2e26a4..6aeddf8e4bc732bc1f0a355c382285019e8daba8 100644 --- a/arch/s390/kernel/vdso32/clock_getres.S +++ b/arch/s390/kernel/vdso32/clock_getres.S @@ -9,6 +9,7 @@ #include #include #include +#include .text .align 4 diff --git a/arch/s390/kernel/vdso32/clock_gettime.S b/arch/s390/kernel/vdso32/clock_gettime.S index 2d6ec3abe095ea30bac898e85fd4cf4faf06bbe5..d0ac32c413e29a7ec0af766f31c8e25532a81673 100644 --- a/arch/s390/kernel/vdso32/clock_gettime.S +++ b/arch/s390/kernel/vdso32/clock_gettime.S @@ -9,6 +9,7 @@ #include #include #include +#include .text .align 4 diff --git a/arch/s390/kernel/vdso32/getcpu.S b/arch/s390/kernel/vdso32/getcpu.S index 5477a2c112fb800e3c1013cb17a03a1d6aa47228..539d92a2c61b19e15ffa351b4a031d55a11cfff9 100644 --- a/arch/s390/kernel/vdso32/getcpu.S +++ b/arch/s390/kernel/vdso32/getcpu.S @@ -8,6 +8,7 @@ */ #include #include +#include .text .align 4 diff --git a/arch/s390/kernel/vdso32/gettimeofday.S b/arch/s390/kernel/vdso32/gettimeofday.S index aa8bf13a2edb1f77c861ed6de0acc2a2836e26fa..435f819c3e65ee1a06faa6a697bd3285937d8c7e 100644 --- a/arch/s390/kernel/vdso32/gettimeofday.S +++ b/arch/s390/kernel/vdso32/gettimeofday.S @@ -9,6 +9,7 @@ #include #include #include +#include .text .align 4 diff --git a/arch/s390/kernel/vdso64/Makefile b/arch/s390/kernel/vdso64/Makefile index f81ae799888394cab67c4ba76743e4a901a04b44..15b1ceafc4c18fd2cf7fc52920e6c259212b1708 100644 --- a/arch/s390/kernel/vdso64/Makefile +++ b/arch/s390/kernel/vdso64/Makefile @@ -10,6 +10,9 @@ obj-vdso64 = gettimeofday.o clock_getres.o clock_gettime.o note.o getcpu.o targets := $(obj-vdso64) vdso64.so vdso64.so.dbg obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64)) +KBUILD_AFLAGS += -DBUILD_VDSO +KBUILD_CFLAGS += -DBUILD_VDSO + KBUILD_AFLAGS_64 := $(filter-out -m64,$(KBUILD_AFLAGS)) KBUILD_AFLAGS_64 += -m64 -s diff --git a/arch/s390/kernel/vdso64/clock_getres.S b/arch/s390/kernel/vdso64/clock_getres.S index faf5213b15dfae9536f2583b601c1b4610558249..5b0d9c380de255f2e51816ed94fc8c5b1df35414 100644 --- a/arch/s390/kernel/vdso64/clock_getres.S +++ b/arch/s390/kernel/vdso64/clock_getres.S @@ -9,6 +9,7 @@ #include #include #include +#include .text .align 4 diff --git a/arch/s390/kernel/vdso64/clock_gettime.S b/arch/s390/kernel/vdso64/clock_gettime.S index 6046b3bfca4622ea87bd1759bfa36e3f2d5b6d89..deccd793b2796eefc005853b17f07eeecb91d3ba 100644 --- a/arch/s390/kernel/vdso64/clock_gettime.S +++ b/arch/s390/kernel/vdso64/clock_gettime.S @@ -9,6 +9,7 @@ #include #include #include +#include .text .align 4 diff --git a/arch/s390/kernel/vdso64/getcpu.S b/arch/s390/kernel/vdso64/getcpu.S index e9c34364d97b1aafdef2b0fa24c3ece518e3fe53..022acdecd5b9dd0eaa9d1751c4ef14e3a3f540db 100644 --- a/arch/s390/kernel/vdso64/getcpu.S +++ b/arch/s390/kernel/vdso64/getcpu.S @@ -8,6 +8,7 @@ */ #include #include +#include .text .align 4 diff --git a/arch/s390/kernel/vdso64/gettimeofday.S b/arch/s390/kernel/vdso64/gettimeofday.S index cc9dbc27da6fbcd22e865dd502be7f8bd515a11c..964afb1de06d301e9fd976143d9c4db1ca1aba77 100644 --- a/arch/s390/kernel/vdso64/gettimeofday.S +++ b/arch/s390/kernel/vdso64/gettimeofday.S @@ -9,6 +9,7 @@ #include #include #include +#include .text .align 4 diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S index a049ff005f03df571ab58a52180b42e44b63bf6d..608cf2987d1963ed65f1faa53ff35236cc47e583 100644 --- a/arch/s390/kernel/vmlinux.lds.S +++ b/arch/s390/kernel/vmlinux.lds.S @@ -141,4 +141,7 @@ SECTIONS /* Sections to be discarded */ DISCARDS + /DISCARD/ : { + *(.eh_frame) + } }