#include "user-internals.h"
#include "signal-common.h"
#include "linux-user/trace.h"
-
#include "target/loongarch/internals.h"
#include "target/loongarch/vec.h"
+#include "vdso-asmoffset.h"
/* FP context was used */
#define SC_USED_FP (1 << 0)
uint64_t sc_extcontext[0] QEMU_ALIGNED(16);
};
+QEMU_BUILD_BUG_ON(sizeof(struct target_sigcontext) != sizeof_sigcontext);
+QEMU_BUILD_BUG_ON(offsetof(struct target_sigcontext, sc_pc)
+ != offsetof_sigcontext_pc);
+QEMU_BUILD_BUG_ON(offsetof(struct target_sigcontext, sc_regs)
+ != offsetof_sigcontext_gr);
#define FPU_CTX_MAGIC 0x46505501
#define FPU_CTX_ALIGN 8
uint32_t fcsr;
} QEMU_ALIGNED(FPU_CTX_ALIGN);
+QEMU_BUILD_BUG_ON(offsetof(struct target_fpu_context, regs)
+ != offsetof_fpucontext_fr);
+
#define CONTEXT_INFO_ALIGN 16
struct target_sctx_info {
uint32_t magic;
uint64_t padding;
} QEMU_ALIGNED(CONTEXT_INFO_ALIGN);
+QEMU_BUILD_BUG_ON(sizeof(struct target_sctx_info) != sizeof_sctx_info);
+
struct target_ucontext {
abi_ulong tuc_flags;
abi_ptr tuc_link;
struct target_ucontext rs_uc;
};
+QEMU_BUILD_BUG_ON(sizeof(struct target_rt_sigframe)
+ != sizeof_rt_sigframe);
+QEMU_BUILD_BUG_ON(offsetof(struct target_rt_sigframe, rs_uc.tuc_mcontext)
+ != offsetof_sigcontext);
+
/*
* These two structures are not present in guest memory, are private
* to the signal implementation, but are largely copied from the
--- /dev/null
+/*
+ * Loongarch64 linux replacement vdso.
+ *
+ * Copyright 2023 Linaro, Ltd.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <asm/unistd.h>
+#include <asm/errno.h>
+#include "vdso-asmoffset.h"
+
+
+ .text
+
+.macro endf name
+ .globl \name
+ .type \name, @function
+ .size \name, . - \name
+.endm
+
+.macro vdso_syscall name, nr
+\name:
+ li.w $a7, \nr
+ syscall 0
+ jr $ra
+endf \name
+.endm
+
+ .cfi_startproc
+
+vdso_syscall __vdso_gettimeofday, __NR_gettimeofday
+vdso_syscall __vdso_clock_gettime, __NR_clock_gettime
+vdso_syscall __vdso_clock_getres, __NR_clock_getres
+vdso_syscall __vdso_getcpu, __NR_getcpu
+
+ .cfi_endproc
+
+/*
+ * Start the unwind info at least one instruction before the signal
+ * trampoline, because the unwinder will assume we are returning
+ * after a call site.
+ */
+
+ .cfi_startproc simple
+ .cfi_signal_frame
+
+#define B_GR offsetof_sigcontext_gr
+#define B_FR sizeof_sigcontext + sizeof_sctx_info + offsetof_fpucontext_fr
+
+ .cfi_def_cfa 2, offsetof_sigcontext
+
+ /* Return address */
+ .cfi_return_column 64
+ .cfi_offset 64, offsetof_sigcontext_pc /* pc */
+
+ /* Integer registers */
+ .cfi_offset 1, B_GR + 1 * 8
+ .cfi_offset 2, B_GR + 2 * 8
+ .cfi_offset 3, B_GR + 3 * 8
+ .cfi_offset 4, B_GR + 4 * 8
+ .cfi_offset 5, B_GR + 5 * 8
+ .cfi_offset 6, B_GR + 6 * 8
+ .cfi_offset 7, B_GR + 7 * 8
+ .cfi_offset 8, B_GR + 8 * 8
+ .cfi_offset 9, B_GR + 9 * 8
+ .cfi_offset 10, B_GR + 10 * 8
+ .cfi_offset 11, B_GR + 11 * 8
+ .cfi_offset 12, B_GR + 12 * 8
+ .cfi_offset 13, B_GR + 13 * 8
+ .cfi_offset 14, B_GR + 14 * 8
+ .cfi_offset 15, B_GR + 15 * 8
+ .cfi_offset 16, B_GR + 16 * 8
+ .cfi_offset 17, B_GR + 17 * 8
+ .cfi_offset 18, B_GR + 18 * 8
+ .cfi_offset 19, B_GR + 19 * 8
+ .cfi_offset 20, B_GR + 20 * 8
+ .cfi_offset 21, B_GR + 21 * 8
+ .cfi_offset 22, B_GR + 22 * 8
+ .cfi_offset 23, B_GR + 23 * 8
+ .cfi_offset 24, B_GR + 24 * 8
+ .cfi_offset 25, B_GR + 25 * 8
+ .cfi_offset 26, B_GR + 26 * 8
+ .cfi_offset 27, B_GR + 27 * 8
+ .cfi_offset 28, B_GR + 28 * 8
+ .cfi_offset 29, B_GR + 29 * 8
+ .cfi_offset 30, B_GR + 30 * 8
+ .cfi_offset 31, B_GR + 31 * 8
+
+ /* Floating point registers */
+ .cfi_offset 32, B_FR + 0
+ .cfi_offset 33, B_FR + 1 * 8
+ .cfi_offset 34, B_FR + 2 * 8
+ .cfi_offset 35, B_FR + 3 * 8
+ .cfi_offset 36, B_FR + 4 * 8
+ .cfi_offset 37, B_FR + 5 * 8
+ .cfi_offset 38, B_FR + 6 * 8
+ .cfi_offset 39, B_FR + 7 * 8
+ .cfi_offset 40, B_FR + 8 * 8
+ .cfi_offset 41, B_FR + 9 * 8
+ .cfi_offset 42, B_FR + 10 * 8
+ .cfi_offset 43, B_FR + 11 * 8
+ .cfi_offset 44, B_FR + 12 * 8
+ .cfi_offset 45, B_FR + 13 * 8
+ .cfi_offset 46, B_FR + 14 * 8
+ .cfi_offset 47, B_FR + 15 * 8
+ .cfi_offset 48, B_FR + 16 * 8
+ .cfi_offset 49, B_FR + 17 * 8
+ .cfi_offset 50, B_FR + 18 * 8
+ .cfi_offset 51, B_FR + 19 * 8
+ .cfi_offset 52, B_FR + 20 * 8
+ .cfi_offset 53, B_FR + 21 * 8
+ .cfi_offset 54, B_FR + 22 * 8
+ .cfi_offset 55, B_FR + 23 * 8
+ .cfi_offset 56, B_FR + 24 * 8
+ .cfi_offset 57, B_FR + 25 * 8
+ .cfi_offset 58, B_FR + 26 * 8
+ .cfi_offset 59, B_FR + 27 * 8
+ .cfi_offset 60, B_FR + 28 * 8
+ .cfi_offset 61, B_FR + 29 * 8
+ .cfi_offset 62, B_FR + 30 * 8
+ .cfi_offset 63, B_FR + 31 * 8
+
+ nop
+
+__vdso_rt_sigreturn:
+ li.w $a7, __NR_rt_sigreturn
+ syscall 0
+ .cfi_endproc
+endf __vdso_rt_sigreturn
--- /dev/null
+/*
+ * Linker script for linux loongarch64 replacement vdso.
+ *
+ * Copyright 2023 Linaro, Ltd.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+VERSION {
+ LINUX_5.10 {
+ global:
+ __vdso_getcpu;
+ __vdso_clock_getres;
+ __vdso_clock_gettime;
+ __vdso_gettimeofday;
+ __vdso_rt_sigreturn;
+
+ local: *;
+ };
+}
+
+
+PHDRS {
+ phdr PT_PHDR FLAGS(4) PHDRS;
+ load PT_LOAD FLAGS(7) FILEHDR PHDRS;
+ dynamic PT_DYNAMIC FLAGS(4);
+ eh_frame_hdr PT_GNU_EH_FRAME;
+ note PT_NOTE FLAGS(4);
+}
+
+SECTIONS {
+ /*
+ * We can't prelink to any address without knowing something about
+ * the virtual memory space of the host, since that leaks over into
+ * the available memory space of the guest.
+ */
+ . = 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*) } :load :note
+ .dynamic : { *(.dynamic) } :load :dynamic
+ .dynsym : { *(.dynsym) } :load
+ /*
+ * There ought not be any real read-write data.
+ * But since we manipulated the segment layout,
+ * we have to put these sections somewhere.
+ */
+ .data : {
+ *(.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) } :load :eh_frame_hdr
+ .eh_frame : { *(.eh_frame) } :load
+
+ .text : { *(.text*) } :load =0xd503201f
+}
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