@@ -1778,6 +1778,10 @@ static inline void init_thread(struct target_pt_regs *regs,
#define STACK_GROWS_DOWN 0
#define STACK_ALIGNMENT 64
+#include "vdso.c.inc"
+
+#define vdso_image_info() &vdso_image_info
+
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
@@ -41,7 +41,6 @@ struct target_ucontext {
};
struct target_rt_sigframe {
- abi_uint tramp[2]; /* syscall restart return address */
target_siginfo_t info;
struct target_ucontext uc;
/* hidden location of upper halves of pa2.0 64-bit gregs */
new file mode 100644
@@ -0,0 +1,6 @@
+CROSS_CC ?= hppa-linux-gnu-gcc
+
+vdso.so: vdso.S vdso.ld Makefile.vdso
+ $(CROSS_CC) -nostdlib -shared -Wl,-T,vdso.ld \
+ -Wl,-h,linux-vdso.so.1 -Wl,--build-id=sha1 \
+ -Wl,--hash-style=sysv vdso.S -o $@
@@ -3,3 +3,9 @@ syscall_nr_generators += {
arguments: [ meson.current_source_dir() / 'syscallhdr.sh', '@INPUT@', '@OUTPUT@', '@EXTRA_ARGS@' ],
output: '@BASENAME@_nr.h')
}
+
+gen = [
+ gen_vdso.process('vdso.so', extra_args: ['-r', '__kernel_rt_sigreturn'])
+]
+
+linux_user_ss.add(when: 'TARGET_HPPA', if_true: gen)
new file mode 100644
@@ -0,0 +1,149 @@
+/*
+ * hppa linux kernel vdso replacement.
+ *
+ * Copyright 2021 Linaro, Ltd.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <asm/unistd.h>
+
+ .text
+
+#define sizeof_rt_sigframe 696
+#define offsetof_sigcontext 152
+#define offsetof_sigcontext_gr offsetof_sigcontext + 4
+#define offsetof_sigcontext_fr offsetof_sigcontext_gr + 32 * 4
+#define offsetof_sigcontext_iasq offsetof_sigcontext_fr + 32 * 8
+#define offsetof_sigcontext_iaoq offsetof_sigcontext_iasq + 8
+#define offsetof_sigcontext_sar offsetof_sigcontext_iaoq + 8
+
+ /*
+ * While this frame is marked as a signal frame, that only applies
+ * to how this return address is handled for the outer frame.
+ * The return address that arrived here, from the inner frame, is
+ * not marked as a signal frame and so the unwinder still tries to
+ * subtract 1 to examine the presumed call insn. Thus we must
+ * extend the unwind info to a nop before the start.
+ */
+
+ .cfi_startproc simple
+ .cfi_signal_frame
+
+ /* Compare pa32_fallback_frame_state from libgcc. */
+
+ /* Record the size of the stack frame. */
+ .cfi_def_cfa 30, -sizeof_rt_sigframe
+
+ /* Record save offset of general registers. */
+ .cfi_offset 1, offsetof_sigcontext_gr + 1 * 4
+ .cfi_offset 2, offsetof_sigcontext_gr + 2 * 4
+ .cfi_offset 3, offsetof_sigcontext_gr + 3 * 4
+ .cfi_offset 4, offsetof_sigcontext_gr + 4 * 4
+ .cfi_offset 5, offsetof_sigcontext_gr + 5 * 4
+ .cfi_offset 6, offsetof_sigcontext_gr + 6 * 4
+ .cfi_offset 7, offsetof_sigcontext_gr + 7 * 4
+ .cfi_offset 8, offsetof_sigcontext_gr + 8 * 4
+ .cfi_offset 9, offsetof_sigcontext_gr + 9 * 4
+ .cfi_offset 10, offsetof_sigcontext_gr + 10 * 4
+ .cfi_offset 11, offsetof_sigcontext_gr + 11 * 4
+ .cfi_offset 12, offsetof_sigcontext_gr + 12 * 4
+ .cfi_offset 13, offsetof_sigcontext_gr + 13 * 4
+ .cfi_offset 14, offsetof_sigcontext_gr + 14 * 4
+ .cfi_offset 15, offsetof_sigcontext_gr + 15 * 4
+ .cfi_offset 16, offsetof_sigcontext_gr + 16 * 4
+ .cfi_offset 17, offsetof_sigcontext_gr + 17 * 4
+ .cfi_offset 18, offsetof_sigcontext_gr + 18 * 4
+ .cfi_offset 19, offsetof_sigcontext_gr + 19 * 4
+ .cfi_offset 20, offsetof_sigcontext_gr + 20 * 4
+ .cfi_offset 21, offsetof_sigcontext_gr + 21 * 4
+ .cfi_offset 22, offsetof_sigcontext_gr + 22 * 4
+ .cfi_offset 23, offsetof_sigcontext_gr + 23 * 4
+ .cfi_offset 24, offsetof_sigcontext_gr + 24 * 4
+ .cfi_offset 25, offsetof_sigcontext_gr + 25 * 4
+ .cfi_offset 26, offsetof_sigcontext_gr + 26 * 4
+ .cfi_offset 27, offsetof_sigcontext_gr + 27 * 4
+ .cfi_offset 28, offsetof_sigcontext_gr + 28 * 4
+ .cfi_offset 29, offsetof_sigcontext_gr + 29 * 4
+ .cfi_offset 30, offsetof_sigcontext_gr + 30 * 4
+ .cfi_offset 31, offsetof_sigcontext_gr + 31 * 4
+
+ /* Record save offset of fp registers, left and right halves. */
+ .cfi_offset 32, offsetof_sigcontext_fr + 4 * 8
+ .cfi_offset 33, offsetof_sigcontext_fr + 4 * 8 + 4
+ .cfi_offset 34, offsetof_sigcontext_fr + 5 * 8
+ .cfi_offset 35, offsetof_sigcontext_fr + 5 * 8 + 4
+ .cfi_offset 36, offsetof_sigcontext_fr + 6 * 8
+ .cfi_offset 37, offsetof_sigcontext_fr + 6 * 8 + 4
+ .cfi_offset 38, offsetof_sigcontext_fr + 7 * 8
+ .cfi_offset 39, offsetof_sigcontext_fr + 7 * 8 + 4
+ .cfi_offset 40, offsetof_sigcontext_fr + 8 * 8
+ .cfi_offset 41, offsetof_sigcontext_fr + 8 * 8 + 4
+ .cfi_offset 42, offsetof_sigcontext_fr + 9 * 8
+ .cfi_offset 43, offsetof_sigcontext_fr + 9 * 8 + 4
+ .cfi_offset 44, offsetof_sigcontext_fr + 10 * 8
+ .cfi_offset 45, offsetof_sigcontext_fr + 10 * 8 + 4
+ .cfi_offset 46, offsetof_sigcontext_fr + 11 * 8
+ .cfi_offset 47, offsetof_sigcontext_fr + 11 * 8 + 4
+ .cfi_offset 48, offsetof_sigcontext_fr + 12 * 8
+ .cfi_offset 49, offsetof_sigcontext_fr + 12 * 8 + 4
+ .cfi_offset 50, offsetof_sigcontext_fr + 13 * 8
+ .cfi_offset 51, offsetof_sigcontext_fr + 13 * 8 + 4
+ .cfi_offset 52, offsetof_sigcontext_fr + 14 * 8
+ .cfi_offset 53, offsetof_sigcontext_fr + 14 * 8 + 4
+ .cfi_offset 54, offsetof_sigcontext_fr + 15 * 8
+ .cfi_offset 55, offsetof_sigcontext_fr + 15 * 8 + 4
+ .cfi_offset 56, offsetof_sigcontext_fr + 16 * 8
+ .cfi_offset 57, offsetof_sigcontext_fr + 16 * 8 + 4
+ .cfi_offset 58, offsetof_sigcontext_fr + 17 * 8
+ .cfi_offset 59, offsetof_sigcontext_fr + 17 * 8 + 4
+ .cfi_offset 60, offsetof_sigcontext_fr + 18 * 8
+ .cfi_offset 61, offsetof_sigcontext_fr + 18 * 8 + 4
+ .cfi_offset 62, offsetof_sigcontext_fr + 19 * 8
+ .cfi_offset 63, offsetof_sigcontext_fr + 19 * 8 + 4
+ .cfi_offset 64, offsetof_sigcontext_fr + 20 * 8
+ .cfi_offset 65, offsetof_sigcontext_fr + 20 * 8 + 4
+ .cfi_offset 66, offsetof_sigcontext_fr + 21 * 8
+ .cfi_offset 67, offsetof_sigcontext_fr + 21 * 8 + 4
+ .cfi_offset 68, offsetof_sigcontext_fr + 22 * 8
+ .cfi_offset 69, offsetof_sigcontext_fr + 22 * 8 + 4
+ .cfi_offset 70, offsetof_sigcontext_fr + 23 * 8
+ .cfi_offset 71, offsetof_sigcontext_fr + 23 * 8 + 4
+ .cfi_offset 72, offsetof_sigcontext_fr + 24 * 8
+ .cfi_offset 73, offsetof_sigcontext_fr + 24 * 8 + 4
+ .cfi_offset 74, offsetof_sigcontext_fr + 25 * 8
+ .cfi_offset 75, offsetof_sigcontext_fr + 25 * 8 + 4
+ .cfi_offset 76, offsetof_sigcontext_fr + 26 * 8
+ .cfi_offset 77, offsetof_sigcontext_fr + 26 * 8 + 4
+ .cfi_offset 78, offsetof_sigcontext_fr + 27 * 8
+ .cfi_offset 79, offsetof_sigcontext_fr + 27 * 8 + 4
+ .cfi_offset 80, offsetof_sigcontext_fr + 28 * 8
+ .cfi_offset 81, offsetof_sigcontext_fr + 28 * 8 + 4
+ .cfi_offset 82, offsetof_sigcontext_fr + 29 * 8
+ .cfi_offset 83, offsetof_sigcontext_fr + 29 * 8 + 4
+ .cfi_offset 84, offsetof_sigcontext_fr + 30 * 8
+ .cfi_offset 85, offsetof_sigcontext_fr + 30 * 8 + 4
+ .cfi_offset 86, offsetof_sigcontext_fr + 31 * 8
+ .cfi_offset 87, offsetof_sigcontext_fr + 31 * 8 + 4
+
+ /* Record save offset of %sar */
+ .cfi_offset 88, offsetof_sigcontext_sar
+
+ /* Record save offset of return address, iaoq[0]. */
+ .cfi_return_column 89
+ .cfi_offset 89, offsetof_sigcontext_iaoq
+
+ nop
+
+__kernel_rt_sigreturn:
+
+ ldi 0, %r25
+ ldi __NR_rt_sigreturn, %r20
+ be,l 0x100(%sr2, %r0), %sr0, %r31
+ nop
+
+ .cfi_endproc
+
+ .size __kernel_rt_sigreturn, . - __kernel_rt_sigreturn
+ .type __kernel_rt_sigreturn, @function
+ .globl __kernel_rt_sigreturn
new file mode 100644
@@ -0,0 +1,75 @@
+/*
+ * Linker script for linux hppa vdso.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * Note that the kernel does not implement a vdso for hppa.
+ * Mirror the symbol that other targets use for this, e.g. i386.
+ */
+
+VERSION {
+ QEMU {
+ global:
+ __kernel_rt_sigreturn;
+ local: *;
+ };
+}
+
+
+PHDRS {
+ phdr PT_PHDR FLAGS(4) PHDRS;
+ data PT_LOAD FLAGS(6) FILEHDR PHDRS;
+ text PT_LOAD FLAGS(5);
+ dynamic PT_DYNAMIC FLAGS(4);
+ note PT_NOTE FLAGS(4);
+ eh_frame_hdr PT_GNU_EH_FRAME;
+}
+
+SECTIONS {
+ . = SIZEOF_HEADERS;
+
+ /* The following, including the FILEHDRS and PHDRS, are modified
+ when we relocate the binary. We want them to be initially
+ writable for the relocation; we'll force them read-only after. */
+ .note : { *(.note*) } :data :note
+ .dynamic : { *(.dynamic) } :data :dynamic
+ .dynsym : { *(.dynsym) } :data
+ .data : {
+ /* There ought not be any real read-write data.
+ But since we manipulated the segment layout,
+ we have to put these sections somewhere. */
+ *(.data*)
+ *(.sdata*)
+ *(.got.plt) *(.got)
+ *(.gnu.linkonce.d.*)
+ *(.bss*)
+ *(.dynbss*)
+ *(.gnu.linkonce.b.*)
+ }
+
+ .rodata : { *(.rodata) }
+ .hash : { *(.hash) }
+ .gnu.hash : { *(.gnu.hash) }
+ .dynstr : { *(.dynstr) }
+ .gnu.version : { *(.gnu.version) }
+ .gnu.version_d : { *(.gnu.version_d) }
+ .gnu.version_r : { *(.gnu.version_r) }
+ .eh_frame_hdr : { *(.eh_frame_hdr) } :data :eh_frame_hdr
+ .eh_frame : { *(.eh_frame) } :data
+
+ . = ALIGN(4096);
+ .text : { *(.text*) } :text
+}
new file mode 100755
Building the vdso itself is not actually wired up to anything, since we require a cross-compiler. Just check in that file for now. Drop the now-unused 9 trampoline words, and describe the frame without the trampoline in __kernel_rt_sigreturn. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- linux-user/elfload.c | 4 + linux-user/hppa/signal.c | 1 - linux-user/hppa/Makefile.vdso | 6 ++ linux-user/hppa/meson.build | 6 ++ linux-user/hppa/vdso.S | 149 ++++++++++++++++++++++++++++++++++ linux-user/hppa/vdso.ld | 75 +++++++++++++++++ linux-user/hppa/vdso.so | Bin 0 -> 5196 bytes 7 files changed, 240 insertions(+), 1 deletion(-) create mode 100644 linux-user/hppa/Makefile.vdso create mode 100644 linux-user/hppa/vdso.S create mode 100644 linux-user/hppa/vdso.ld create mode 100755 linux-user/hppa/vdso.so GIT binary patch literal 5196 zcmeHLTX2&_6y8m`h?i>1Fr!Y<(V03TLgZ2vMX_m{v|xHmQlRzno08B(+64dnt!Y&# zrJ#tSAYi?V;vMhzD?akzLq~o0rOYtnjH5H?lUl!T|9?q4!-F$E`0}6R%h_|;v%6<E z59e%)#G*1FgThcyT!5hzqKcY2A*xRa5vaoGGBHOig!O#r=eRc7HNFKWDm-BRObTX& zAUIFQ_2P4^<@p#8%98`w!bN3>QP>C*pB(!-jarNeZBIKVI<V(t89FxOYrDrO2b<fv z#Mtj0rSTI#{Pf3xiK*{Ke*U}EIrSrKJm-b3ubc$O-sDMeoIy^2p93rg&INb~<WNo) zrl<eJx(mSnf-V65D;U@MuXLpeP%Wl^!<aebd8+2=JuqLIn0wwQa(J4gu&m7)JD=&d zY{x3*`s|D|Xy-+LE<adWGL$YBLijEdosrfqP73JR5^La7`OC4x(D4il0Omxm4j(C0 z&lQl&`Sc!TO>h--%n9~VdDL|l%$<-U@r0<T=$19}F8zM%_Jw0t?N~H^_0Gk+mOL1G z=$hS2A6~X+`6DYHt=oI;W7j=?{l1m^Z+POy1FH_+bm-<MS5MsXRQ=Q8XBwVue6H#F z$P3XI+YfiV)cJD!NaB^`t6i_Hdwu;I8{X`GtLNx#Z{PmT9q-=xp7s7+AEZ9){b=LI z=}$7BZu+e6^XwP7FYo?p^Vj{~3>?d=`hp5?Q4RN~Mq4!%Rm4%zLDf8@TJBYAN^0$} zx^+aw?o+MztF{MJ`&QMlO?8e+72hsZVoa*!4yn4vrCPUBs`b01+OS8e?%hnkK0EIH zydxN!+)(e6p8-Dueg^yu_!;ms;Ag<kfS&<B1AYenw+ze`f%>|OQN+)eJyT*#P!?yV zQ&h9ab<J+Q3E8VNbxlk=Yfq3o&R+<uQ9-(fri?mT%eo$f%w7V>t&t(0<;koy=|9(# zlb(FGCucpGbvTISruJt&jy<~jlWwgHpMahZ8|PnQ_UGAGK&Q#8tydymxwf{Ny4%97 zYZ_5RqhDY}TC8Y1+#0c3n&QH0j<q+0V^(`KnusK=WVj&~vD`ZP%q6!76^93$R4=$= zyF6<~`GS)Xq4aP*HIUn=2k-??IVlm!rixit=h!0DmmdrbW$a?Eke?-3X%Wg~txa}n zAY*0I@HCPLIhm4U4*KtS4cvGiykp)!Q41LI?p9n51@95pW%@Q^)YF0KH^6&b1n_>? z-$4&WznP_wIhXHB=Nx>wCo|r07v>$nQtsp6p7eWSyh#^=eGtsk#CXJNfI9k}bfJ4U zP-*hsw1}c#GYt*=_#X9}^v<RIpx3!bnEnn#yi-DOFZ87k*Ch1<jLmpS7qj{S#&63E zKfLPzV73HHIo^ophjsYgiCOW?ByUZcNmV$Dq;n;}{vOw*%>RPP6^7Nd_-O+SnRwMu O%=EJ%j~XX%?e`Db?gR4x literal 0 HcmV?d00001