@@ -1457,6 +1457,9 @@ static inline void init_thread(struct target_pt_regs *regs,
#define STACK_GROWS_DOWN 0
#define STACK_ALIGNMENT 64
+#define HAVE_VDSO 1
+#include "vdso.c.inc"
+
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
@@ -40,7 +40,6 @@ struct target_ucontext {
};
struct target_rt_sigframe {
- abi_uint tramp[9];
target_siginfo_t info;
struct target_ucontext uc;
/* hidden location of upper halves of pa2.0 64-bit gregs */
@@ -138,14 +137,9 @@ void setup_rt_frame(int sig, struct target_sigaction *ka,
setup_sigcontext(&frame->uc.tuc_mcontext, env);
- __put_user(0x34190000, frame->tramp + 0); /* ldi 0,%r25 */
- __put_user(0x3414015a, frame->tramp + 1); /* ldi __NR_rt_sigreturn,%r20 */
- __put_user(0xe4008200, frame->tramp + 2); /* be,l 0x100(%sr2,%r0) */
- __put_user(0x08000240, frame->tramp + 3); /* nop */
-
unlock_user_struct(frame, frame_addr, 1);
- env->gr[2] = h2g(frame->tramp);
+ env->gr[2] = default_rt_sigreturn;
env->gr[30] = sp;
env->gr[26] = sig;
env->gr[25] = h2g(&frame->info);
new file mode 100644
@@ -0,0 +1,4 @@
+vdso.so: vdso.S vdso.ld Makefile.vdso
+ hppa-linux-gnu-gcc -nostdlib -shared -Wl,-T,vdso.ld \
+ -Wl,-h,linux-vdso.so.1 -Wl,--build-id=none \
+ -Wl,--hash-style=both 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')
+]
+
+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 | 3 + linux-user/hppa/signal.c | 8 +- linux-user/hppa/Makefile.vdso | 4 + 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 -> 5192 bytes 7 files changed, 238 insertions(+), 7 deletions(-) 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 5192 zcmeHLS#MiK6rOQ1r7WRN6$wxP@lZs8)^rJ_&;oH{J1IDuleA3;+`6?Jn<h@Uz6nkV zDNPr;0BzZq0xguKQ1-Ad<p=P@ZvY7i2^9%=DunNwJ5whp4@gKn-J=|zb<Umn=H%hb zj(9R5L$X3xst^mHN+H7Z)Cp02Mu<=t+ErqnSd8e!@XzyOjBEZDl3ZyR>t|BMun=Uf z({)XK>e{Y>LRQ8OLH}(A?}JXZ^(p5f9nW|_wqwtIW!AM>->&BwF7a(SH8lO#?>O>z zu<?C)1`_*}<B%7Cmw+z>bECkC`O{}ndlBTH@P#0;CUiOU|4P@`0@Y&rSLnovdk!!3 z_drZY#FuwQoGj5to06=KX~>|#9zSsM?2*!;pM~RW%esZ^fa7{jG2icIy%Dz{2J(fG z($djPaVUbn<)S0r(#>@tQ&FO#tor5jarlTM&r1CKFNF|Qy;s9xjHJ&YYb(}3CvMnJ z)d@dY{KN#gJ=G~HD|=+^!YjX@*tvM}+FjS}zJAY=y-OdC?7LzAvIENxu6ShSqjitn zcxct(n~to0{N^Wad2-EDYoEULncJSd{ki(*qc1cZZG18IQvBt_v9{ywuXMbcI??%B z*X!MHtbcRE$&GLIyxn{1u6O$0z5Bg;-giFO^kMp=%~M-G&U}*nbn9pRpXa{Fe|hg$ z+rA$7X7F@D)eouYuxhwZHM%NRRB=xwMpV<NYQA5sE2%ri)ScT^@&VN{u38^dZ4;_} zhw6Aps?<)YIwz&-+9g%@ZmHJqk!r(UsWu*zs%Jm1K%X7GanVue7908l3J?eo2oMMm z2oMMm2oMMm2oMMm2oU(+5tuJR^>vqFh_8{oKZr>|Tg***_T&KUhxL5SA=J#E@)Z5B zIhTUu6n|lGeg*0Inl@%^ZDTIdalR#h{P`L2^NhWS683y!_Zj<qV-FjfGdhT4rq1WA z&OPe=N`H<<4&MVbas3rY(fc*=l_n<4+`St0%5%39>uHU)tZT&Z+|=6b#G9Q&D%uiv znqw*9G$q>_qDiMMk?4$fIbG3)WZd!R=eb915h;!hdg;xOp6kn;)iPs+^k9CAh(JLW zWZFxMNPl4@l1mqJzTb0w&uG>y=7$Qi3@0NZ*_^Z0O%G<BTn3re5)m(3^6WAHjjTly z?*><J?k$FIFy_AWz4C5&PsAL3z@E^3vCQQ09yE@Sd`F>;dc<DiZ|)Y}^4rWR=<E^J zLl5aby41JvTh3d7cb7kWKYL5}7x!ZN@!VU_TKISd)<e(f_Z{xVlIdp=L%nG@k;h)t z{m8T0dX(f2`|bl1-y;k3i^hd<o|m)<%-ZnTx2Rcf05-2MBM&_t0^2PiQm$7rdDv4J xDtT5tyU2W#VN$pT^_W}*=Gz{>OPl`(#KllG&(UfvNL#NO`pi5R_QXH){sy-o1nd9+ literal 0 HcmV?d00001