diff options
Diffstat (limited to 'meta/recipes-kernel/linux-libc-headers/linux-libc-headers')
3 files changed, 373 insertions, 0 deletions
diff --git a/meta/recipes-kernel/linux-libc-headers/linux-libc-headers/0001-kbuild-install_headers.sh-Strip-_UAPI-from-if-define.patch b/meta/recipes-kernel/linux-libc-headers/linux-libc-headers/0001-kbuild-install_headers.sh-Strip-_UAPI-from-if-define.patch new file mode 100644 index 0000000000..78ebd31e66 --- /dev/null +++ b/meta/recipes-kernel/linux-libc-headers/linux-libc-headers/0001-kbuild-install_headers.sh-Strip-_UAPI-from-if-define.patch @@ -0,0 +1,41 @@ +From 9ca6c6a510bda90954aa2532711200b89dd1df89 Mon Sep 17 00:00:00 2001 +From: Dave Martin <Dave.Martin@arm.com> +Date: Tue, 11 Dec 2018 19:26:45 +0000 +Subject: [PATCH 1/3] kbuild: install_headers.sh: Strip _UAPI from + #if-defined() guards + +install_headers.sh knows how to strip the _UAPI prefix from #ifdef/ +ifndef and #define directives used to guard headers against multiple +or inappropriate inclusion. Currently this does not work for guards +in the "#if defined()" style, which may be needed for non-trivial +cases. + +This patch adds similar logic so that the _UAPI prefix is also +stripped from guard directives written using "#if defined()" etc. + +This is not completely foolproof, but will work for simple cases of +using #if defined() to guard against inappropriate header inclusion. + +Signed-off-by: Dave Martin <Dave.Martin@arm.com> +Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com> + +Upstream-Status: Submitted [https://www.spinics.net/lists/arm-kernel/msg694800.html] +--- + scripts/headers_install.sh | 1 + + 1 file changed, 1 insertion(+) + +diff --git a/scripts/headers_install.sh b/scripts/headers_install.sh +index 593f8879c641..fe1d3fc0d33a 100755 +--- a/scripts/headers_install.sh ++++ b/scripts/headers_install.sh +@@ -38,6 +38,7 @@ do + -e 's/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g' \ + -e 's/(^|[[:space:](])(inline|asm|volatile)([[:space:](]|$)/\1__\2__\3/g' \ + -e 's@#(ifndef|define|endif[[:space:]]*/[*])[[:space:]]*_UAPI@#\1 @' \ ++ -e ':1;s/(#(if|elif)(.*[^A-Za-z0-9_])defined\([[:space:]]*)_UAPI/\1/;t1' \ + "$SRCDIR/$i" > "$OUTDIR/$FILE.sed" || exit 1 + scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ "$OUTDIR/$FILE.sed" \ + > "$OUTDIR/$FILE" +-- +2.5.0 + diff --git a/meta/recipes-kernel/linux-libc-headers/linux-libc-headers/0002-arm64-sve-ptrace-Fix-SVE_PT_REGS_OFFSET-definition.patch b/meta/recipes-kernel/linux-libc-headers/linux-libc-headers/0002-arm64-sve-ptrace-Fix-SVE_PT_REGS_OFFSET-definition.patch new file mode 100644 index 0000000000..462fdba2ed --- /dev/null +++ b/meta/recipes-kernel/linux-libc-headers/linux-libc-headers/0002-arm64-sve-ptrace-Fix-SVE_PT_REGS_OFFSET-definition.patch @@ -0,0 +1,43 @@ +From 0dede80d25ae2005f8af7235809fc09a7c47c62e Mon Sep 17 00:00:00 2001 +From: Dave Martin <Dave.Martin@arm.com> +Date: Tue, 11 Dec 2018 19:26:46 +0000 +Subject: [PATCH 2/3] arm64/sve: ptrace: Fix SVE_PT_REGS_OFFSET definition + +SVE_PT_REGS_OFFSET is supposed to indicate the offset for skipping +over the ptrace NT_ARM_SVE header (struct user_sve_header) to the +start of the SVE register data proper. + +However, currently SVE_PT_REGS_OFFSET is defined in terms of struct +sve_context, which is wrong: that structure describes the SVE +header in the signal frame, not in the ptrace regset. + +This patch fixes the definition to use the ptrace header structure +struct user_sve_header instead. + +By good fortune, the to structures are the same size anyway, so +there is no functional or ABI change. + +Signed-off-by: Dave Martin <Dave.Martin@arm.com> +Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com> + +Upstream-Status: Submitted [https://www.spinics.net/lists/arm-kernel/msg694800.html] +--- + arch/arm64/include/uapi/asm/ptrace.h | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/arch/arm64/include/uapi/asm/ptrace.h b/arch/arm64/include/uapi/asm/ptrace.h +index 98c4ce55d9c3..ad64d2c92ef5 100644 +--- a/arch/arm64/include/uapi/asm/ptrace.h ++++ b/arch/arm64/include/uapi/asm/ptrace.h +@@ -130,7 +130,7 @@ struct user_sve_header { + + /* Offset from the start of struct user_sve_header to the register data */ + #define SVE_PT_REGS_OFFSET \ +- ((sizeof(struct sve_context) + (SVE_VQ_BYTES - 1)) \ ++ ((sizeof(struct user_sve_header) + (SVE_VQ_BYTES - 1)) \ + / SVE_VQ_BYTES * SVE_VQ_BYTES) + + /* +-- +2.5.0 + diff --git a/meta/recipes-kernel/linux-libc-headers/linux-libc-headers/0003-arm64-sve-Disentangle-uapi-asm-ptrace.h-from-uapi-as.patch b/meta/recipes-kernel/linux-libc-headers/linux-libc-headers/0003-arm64-sve-Disentangle-uapi-asm-ptrace.h-from-uapi-as.patch new file mode 100644 index 0000000000..0423f0f2cc --- /dev/null +++ b/meta/recipes-kernel/linux-libc-headers/linux-libc-headers/0003-arm64-sve-Disentangle-uapi-asm-ptrace.h-from-uapi-as.patch @@ -0,0 +1,289 @@ +From 1114697c04b9699112e78dd8fc6ec849609ca1cb Mon Sep 17 00:00:00 2001 +From: Dave Martin <Dave.Martin@arm.com> +Date: Tue, 11 Dec 2018 19:26:47 +0000 +Subject: [PATCH 3/3] arm64/sve: Disentangle <uapi/asm/ptrace.h> from + <uapi/asm/sigcontext.h> + +Currently, <uapi/asm/sigcontext.h> provides common definitions for +describing SVE context structures that are also used by the ptrace +definitions in <uapi/asm/ptrace.h>. + +For this reason, a #include of <asm/sigcontext.h> was added in +ptrace.h, but it this turns out that this can interact badly with +userspace code that tries to include ptrace.h on top of the libc +headers (which may provide their own shadow definitions for +sigcontext.h). + +To make the headers easier for userspace to consume, this patch +bounces the common definitions into an __SVE_* namespace and moves +them to a backend header <uapi/asm/sve_context.h> that can be +included by the other headers as appropriate. This should allow +ptrace.h to be used alongside libc's sigcontext.h (if any) without +ill effects. + +This should make the situation unambiguous: <asm/sigcontext.h> is +the header to include for the sigframe-specific definitions, while +<asm/ptrace.h> is the header to include for ptrace-specific +definitions. + +To avoid conflicting with existing usage, <asm/sigcontext.h> +remains the canonical way to get the common definitions for +SVE_VQ_MIN, sve_vq_from_vl() etc., both in userspace and in the +kernel: relying on these being defined as a side effect of +including just <asm/ptrace.h> was never intended to be safe. + +Signed-off-by: Dave Martin <Dave.Martin@arm.com> +Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com> + +Upstream-Status: Submitted [https://www.spinics.net/lists/arm-kernel/msg694800.html] +--- + arch/arm64/include/uapi/asm/ptrace.h | 39 ++++++++++----------- + arch/arm64/include/uapi/asm/sigcontext.h | 56 +++++++++++++++---------------- + arch/arm64/include/uapi/asm/sve_context.h | 50 +++++++++++++++++++++++++++ + 3 files changed, 96 insertions(+), 49 deletions(-) + create mode 100644 arch/arm64/include/uapi/asm/sve_context.h + +diff --git a/arch/arm64/include/uapi/asm/ptrace.h b/arch/arm64/include/uapi/asm/ptrace.h +index ad64d2c92ef5..81547c3a95a3 100644 +--- a/arch/arm64/include/uapi/asm/ptrace.h ++++ b/arch/arm64/include/uapi/asm/ptrace.h +@@ -23,7 +23,7 @@ + #include <linux/types.h> + + #include <asm/hwcap.h> +-#include <asm/sigcontext.h> ++#include <asm/sve_context.h> + + + /* +@@ -129,9 +129,9 @@ struct user_sve_header { + */ + + /* Offset from the start of struct user_sve_header to the register data */ +-#define SVE_PT_REGS_OFFSET \ +- ((sizeof(struct user_sve_header) + (SVE_VQ_BYTES - 1)) \ +- / SVE_VQ_BYTES * SVE_VQ_BYTES) ++#define SVE_PT_REGS_OFFSET \ ++ ((sizeof(struct user_sve_header) + (__SVE_VQ_BYTES - 1)) \ ++ / __SVE_VQ_BYTES * __SVE_VQ_BYTES) + + /* + * The register data content and layout depends on the value of the +@@ -177,39 +177,36 @@ struct user_sve_header { + * Additional data might be appended in the future. + */ + +-#define SVE_PT_SVE_ZREG_SIZE(vq) SVE_SIG_ZREG_SIZE(vq) +-#define SVE_PT_SVE_PREG_SIZE(vq) SVE_SIG_PREG_SIZE(vq) +-#define SVE_PT_SVE_FFR_SIZE(vq) SVE_SIG_FFR_SIZE(vq) ++#define SVE_PT_SVE_ZREG_SIZE(vq) __SVE_ZREG_SIZE(vq) ++#define SVE_PT_SVE_PREG_SIZE(vq) __SVE_PREG_SIZE(vq) ++#define SVE_PT_SVE_FFR_SIZE(vq) __SVE_FFR_SIZE(vq) + #define SVE_PT_SVE_FPSR_SIZE sizeof(__u32) + #define SVE_PT_SVE_FPCR_SIZE sizeof(__u32) + +-#define __SVE_SIG_TO_PT(offset) \ +- ((offset) - SVE_SIG_REGS_OFFSET + SVE_PT_REGS_OFFSET) +- + #define SVE_PT_SVE_OFFSET SVE_PT_REGS_OFFSET + + #define SVE_PT_SVE_ZREGS_OFFSET \ +- __SVE_SIG_TO_PT(SVE_SIG_ZREGS_OFFSET) ++ (SVE_PT_REGS_OFFSET + __SVE_ZREGS_OFFSET) + #define SVE_PT_SVE_ZREG_OFFSET(vq, n) \ +- __SVE_SIG_TO_PT(SVE_SIG_ZREG_OFFSET(vq, n)) ++ (SVE_PT_REGS_OFFSET + __SVE_ZREG_OFFSET(vq, n)) + #define SVE_PT_SVE_ZREGS_SIZE(vq) \ +- (SVE_PT_SVE_ZREG_OFFSET(vq, SVE_NUM_ZREGS) - SVE_PT_SVE_ZREGS_OFFSET) ++ (SVE_PT_SVE_ZREG_OFFSET(vq, __SVE_NUM_ZREGS) - SVE_PT_SVE_ZREGS_OFFSET) + + #define SVE_PT_SVE_PREGS_OFFSET(vq) \ +- __SVE_SIG_TO_PT(SVE_SIG_PREGS_OFFSET(vq)) ++ (SVE_PT_REGS_OFFSET + __SVE_PREGS_OFFSET(vq)) + #define SVE_PT_SVE_PREG_OFFSET(vq, n) \ +- __SVE_SIG_TO_PT(SVE_SIG_PREG_OFFSET(vq, n)) ++ (SVE_PT_REGS_OFFSET + __SVE_PREG_OFFSET(vq, n)) + #define SVE_PT_SVE_PREGS_SIZE(vq) \ +- (SVE_PT_SVE_PREG_OFFSET(vq, SVE_NUM_PREGS) - \ ++ (SVE_PT_SVE_PREG_OFFSET(vq, __SVE_NUM_PREGS) - \ + SVE_PT_SVE_PREGS_OFFSET(vq)) + + #define SVE_PT_SVE_FFR_OFFSET(vq) \ +- __SVE_SIG_TO_PT(SVE_SIG_FFR_OFFSET(vq)) ++ (SVE_PT_REGS_OFFSET + __SVE_FFR_OFFSET(vq)) + + #define SVE_PT_SVE_FPSR_OFFSET(vq) \ + ((SVE_PT_SVE_FFR_OFFSET(vq) + SVE_PT_SVE_FFR_SIZE(vq) + \ +- (SVE_VQ_BYTES - 1)) \ +- / SVE_VQ_BYTES * SVE_VQ_BYTES) ++ (__SVE_VQ_BYTES - 1)) \ ++ / __SVE_VQ_BYTES * __SVE_VQ_BYTES) + #define SVE_PT_SVE_FPCR_OFFSET(vq) \ + (SVE_PT_SVE_FPSR_OFFSET(vq) + SVE_PT_SVE_FPSR_SIZE) + +@@ -220,8 +217,8 @@ struct user_sve_header { + + #define SVE_PT_SVE_SIZE(vq, flags) \ + ((SVE_PT_SVE_FPCR_OFFSET(vq) + SVE_PT_SVE_FPCR_SIZE \ +- - SVE_PT_SVE_OFFSET + (SVE_VQ_BYTES - 1)) \ +- / SVE_VQ_BYTES * SVE_VQ_BYTES) ++ - SVE_PT_SVE_OFFSET + (__SVE_VQ_BYTES - 1)) \ ++ / __SVE_VQ_BYTES * __SVE_VQ_BYTES) + + #define SVE_PT_SIZE(vq, flags) \ + (((flags) & SVE_PT_REGS_MASK) == SVE_PT_REGS_SVE ? \ +diff --git a/arch/arm64/include/uapi/asm/sigcontext.h b/arch/arm64/include/uapi/asm/sigcontext.h +index dca8f8b5168b..5f3c0cec5af9 100644 +--- a/arch/arm64/include/uapi/asm/sigcontext.h ++++ b/arch/arm64/include/uapi/asm/sigcontext.h +@@ -130,6 +130,8 @@ struct sve_context { + + #endif /* !__ASSEMBLY__ */ + ++#include <asm/sve_context.h> ++ + /* + * The SVE architecture leaves space for future expansion of the + * vector length beyond its initial architectural limit of 2048 bits +@@ -138,21 +140,20 @@ struct sve_context { + * See linux/Documentation/arm64/sve.txt for a description of the VL/VQ + * terminology. + */ +-#define SVE_VQ_BYTES 16 /* number of bytes per quadword */ ++#define SVE_VQ_BYTES __SVE_VQ_BYTES /* bytes per quadword */ + +-#define SVE_VQ_MIN 1 +-#define SVE_VQ_MAX 512 ++#define SVE_VQ_MIN __SVE_VQ_MIN ++#define SVE_VQ_MAX __SVE_VQ_MAX + +-#define SVE_VL_MIN (SVE_VQ_MIN * SVE_VQ_BYTES) +-#define SVE_VL_MAX (SVE_VQ_MAX * SVE_VQ_BYTES) ++#define SVE_VL_MIN __SVE_VL_MIN ++#define SVE_VL_MAX __SVE_VL_MAX + +-#define SVE_NUM_ZREGS 32 +-#define SVE_NUM_PREGS 16 ++#define SVE_NUM_ZREGS __SVE_NUM_ZREGS ++#define SVE_NUM_PREGS __SVE_NUM_PREGS + +-#define sve_vl_valid(vl) \ +- ((vl) % SVE_VQ_BYTES == 0 && (vl) >= SVE_VL_MIN && (vl) <= SVE_VL_MAX) +-#define sve_vq_from_vl(vl) ((vl) / SVE_VQ_BYTES) +-#define sve_vl_from_vq(vq) ((vq) * SVE_VQ_BYTES) ++#define sve_vl_valid(vl) __sve_vl_valid(vl) ++#define sve_vq_from_vl(vl) __sve_vq_from_vl(vl) ++#define sve_vl_from_vq(vq) __sve_vl_from_vq(vq) + + /* + * If the SVE registers are currently live for the thread at signal delivery, +@@ -205,34 +206,33 @@ struct sve_context { + * Additional data might be appended in the future. + */ + +-#define SVE_SIG_ZREG_SIZE(vq) ((__u32)(vq) * SVE_VQ_BYTES) +-#define SVE_SIG_PREG_SIZE(vq) ((__u32)(vq) * (SVE_VQ_BYTES / 8)) +-#define SVE_SIG_FFR_SIZE(vq) SVE_SIG_PREG_SIZE(vq) ++#define SVE_SIG_ZREG_SIZE(vq) __SVE_ZREG_SIZE(vq) ++#define SVE_SIG_PREG_SIZE(vq) __SVE_PREG_SIZE(vq) ++#define SVE_SIG_FFR_SIZE(vq) __SVE_FFR_SIZE(vq) + + #define SVE_SIG_REGS_OFFSET \ +- ((sizeof(struct sve_context) + (SVE_VQ_BYTES - 1)) \ +- / SVE_VQ_BYTES * SVE_VQ_BYTES) ++ ((sizeof(struct sve_context) + (__SVE_VQ_BYTES - 1)) \ ++ / __SVE_VQ_BYTES * __SVE_VQ_BYTES) + +-#define SVE_SIG_ZREGS_OFFSET SVE_SIG_REGS_OFFSET ++#define SVE_SIG_ZREGS_OFFSET \ ++ (SVE_SIG_REGS_OFFSET + __SVE_ZREGS_OFFSET) + #define SVE_SIG_ZREG_OFFSET(vq, n) \ +- (SVE_SIG_ZREGS_OFFSET + SVE_SIG_ZREG_SIZE(vq) * (n)) +-#define SVE_SIG_ZREGS_SIZE(vq) \ +- (SVE_SIG_ZREG_OFFSET(vq, SVE_NUM_ZREGS) - SVE_SIG_ZREGS_OFFSET) ++ (SVE_SIG_REGS_OFFSET + __SVE_ZREG_OFFSET(vq, n)) ++#define SVE_SIG_ZREGS_SIZE(vq) __SVE_ZREGS_SIZE(vq) + + #define SVE_SIG_PREGS_OFFSET(vq) \ +- (SVE_SIG_ZREGS_OFFSET + SVE_SIG_ZREGS_SIZE(vq)) ++ (SVE_SIG_REGS_OFFSET + __SVE_PREGS_OFFSET(vq)) + #define SVE_SIG_PREG_OFFSET(vq, n) \ +- (SVE_SIG_PREGS_OFFSET(vq) + SVE_SIG_PREG_SIZE(vq) * (n)) +-#define SVE_SIG_PREGS_SIZE(vq) \ +- (SVE_SIG_PREG_OFFSET(vq, SVE_NUM_PREGS) - SVE_SIG_PREGS_OFFSET(vq)) ++ (SVE_SIG_REGS_OFFSET + __SVE_PREG_OFFSET(vq, n)) ++#define SVE_SIG_PREGS_SIZE(vq) __SVE_PREGS_SIZE(vq) + + #define SVE_SIG_FFR_OFFSET(vq) \ +- (SVE_SIG_PREGS_OFFSET(vq) + SVE_SIG_PREGS_SIZE(vq)) ++ (SVE_SIG_REGS_OFFSET + __SVE_FFR_OFFSET(vq)) + + #define SVE_SIG_REGS_SIZE(vq) \ +- (SVE_SIG_FFR_OFFSET(vq) + SVE_SIG_FFR_SIZE(vq) - SVE_SIG_REGS_OFFSET) +- +-#define SVE_SIG_CONTEXT_SIZE(vq) (SVE_SIG_REGS_OFFSET + SVE_SIG_REGS_SIZE(vq)) ++ (__SVE_FFR_OFFSET(vq) + __SVE_FFR_SIZE(vq)) + ++#define SVE_SIG_CONTEXT_SIZE(vq) \ ++ (SVE_SIG_REGS_OFFSET + SVE_SIG_REGS_SIZE(vq)) + + #endif /* _UAPI__ASM_SIGCONTEXT_H */ +diff --git a/arch/arm64/include/uapi/asm/sve_context.h b/arch/arm64/include/uapi/asm/sve_context.h +new file mode 100644 +index 000000000000..140f14c318a5 +--- /dev/null ++++ b/arch/arm64/include/uapi/asm/sve_context.h +@@ -0,0 +1,50 @@ ++/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ ++/* Copyright (C) 2017-2018 ARM Limited */ ++ ++#if !defined(_UAPI__ASM_PTRACE_H) && !defined(_UAPI__ASM_SIGCONTEXT_H) ++#error "Do not include this header or use its definitions directly." ++#endif ++ ++#ifndef _UAPI__ASM_SVE_CONTEXT_H ++#define _UAPI__ASM_SVE_CONTEXT_H ++ ++#define __SVE_VQ_BYTES 16 /* number of bytes per quadword */ ++ ++#define __SVE_VQ_MIN 1 ++#define __SVE_VQ_MAX 512 ++ ++#define __SVE_VL_MIN (__SVE_VQ_MIN * __SVE_VQ_BYTES) ++#define __SVE_VL_MAX (__SVE_VQ_MAX * __SVE_VQ_BYTES) ++ ++#define __SVE_NUM_ZREGS 32 ++#define __SVE_NUM_PREGS 16 ++ ++#define __sve_vl_valid(vl) \ ++ ((vl) % __SVE_VQ_BYTES == 0 && \ ++ (vl) >= __SVE_VL_MIN && \ ++ (vl) <= __SVE_VL_MAX) ++ ++#define __sve_vq_from_vl(vl) ((vl) / __SVE_VQ_BYTES) ++#define __sve_vl_from_vq(vq) ((vq) * __SVE_VQ_BYTES) ++ ++#define __SVE_ZREG_SIZE(vq) ((__u32)(vq) * __SVE_VQ_BYTES) ++#define __SVE_PREG_SIZE(vq) ((__u32)(vq) * (__SVE_VQ_BYTES / 8)) ++#define __SVE_FFR_SIZE(vq) __SVE_PREG_SIZE(vq) ++ ++#define __SVE_ZREGS_OFFSET 0 ++#define __SVE_ZREG_OFFSET(vq, n) \ ++ (__SVE_ZREGS_OFFSET + __SVE_ZREG_SIZE(vq) * (n)) ++#define __SVE_ZREGS_SIZE(vq) \ ++ (__SVE_ZREG_OFFSET(vq, __SVE_NUM_ZREGS) - __SVE_ZREGS_OFFSET) ++ ++#define __SVE_PREGS_OFFSET(vq) \ ++ (__SVE_ZREGS_OFFSET + __SVE_ZREGS_SIZE(vq)) ++#define __SVE_PREG_OFFSET(vq, n) \ ++ (__SVE_PREGS_OFFSET(vq) + __SVE_PREG_SIZE(vq) * (n)) ++#define __SVE_PREGS_SIZE(vq) \ ++ (__SVE_PREG_OFFSET(vq, __SVE_NUM_PREGS) - __SVE_PREGS_OFFSET(vq)) ++ ++#define __SVE_FFR_OFFSET(vq) \ ++ (__SVE_PREGS_OFFSET(vq) + __SVE_PREGS_SIZE(vq)) ++ ++#endif /* ! _UAPI__ASM_SVE_CONTEXT_H */ +-- +2.5.0 + |