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linux(4): implement coredumps on arm64

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Previously they only worked on amd64.

Sponsored By:	EPSRC
Differential Revision:	https://reviews.freebsd.org/D30975
This commit is contained in:
Edward Tomasz Napierala 2021-07-03 08:05:44 +01:00
parent ef790cc740
commit 45d99014ca
4 changed files with 32 additions and 5 deletions
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12
sys/arm64/linux/linux.h
View file

@ -298,4 +298,16 @@ struct linux_robust_list_head {
l_uintptr_t pending_list;
};
struct linux_pt_regset {
l_ulong x[31];
l_ulong sp;
l_ulong pc;
l_ulong cpsr;
};
struct reg;
void bsd_to_linux_regset(struct reg *b_reg,
struct linux_pt_regset *l_regset);
#endif /* _ARM64_LINUX_H_ */

16
sys/arm64/linux/linux_machdep.c
View file

@ -40,6 +40,8 @@ __FBSDID("$FreeBSD$");
#include <security/audit/audit.h>
#include <machine/reg.h>
#include <arm64/linux/linux.h>
#include <arm64/linux/linux_proto.h>
#include <compat/linux/linux_dtrace.h>
@ -149,3 +151,17 @@ linux_set_cloned_tls(struct thread *td, void *desc)
return (cpu_set_user_tls(td, desc));
}
void
bsd_to_linux_regset(struct reg *b_reg, struct linux_pt_regset *l_regset)
{
KASSERT(sizeof(l_regset->x) == sizeof(b_reg->x) + sizeof(l_ulong),
("%s: size mismatch\n", __func__));
memcpy(l_regset->x, b_reg->x, sizeof(b_reg->x));
l_regset->x[30] = b_reg->lr;
l_regset->sp = b_reg->sp;
l_regset->pc = b_reg->elr;
l_regset->cpsr = b_reg->spsr;
}

4
sys/arm64/linux/linux_sysvec.c
View file

@ -417,8 +417,8 @@ struct sysentvec elf_linux_sysvec = {
.sv_name = "Linux ELF64",
.sv_coredump = elf64_coredump,
.sv_elf_core_osabi = ELFOSABI_NONE,
.sv_elf_core_abi_vendor = FREEBSD_ABI_VENDOR,
.sv_elf_core_prepare_notes = elf64_prepare_notes,
.sv_elf_core_abi_vendor = LINUX_ABI_VENDOR,
.sv_elf_core_prepare_notes = linux64_prepare_notes,
.sv_imgact_try = linux_exec_imgact_try,
.sv_minsigstksz = LINUX_MINSIGSTKSZ,
.sv_minuser = VM_MIN_ADDRESS,

5
sys/modules/linux64/Makefile
View file

@ -8,8 +8,8 @@
VDSO= linux_vdso
KMOD= linux64
SRCS= linux_fork.c linux_dummy_machdep.c linux_file.c linux_event.c \
linux_futex.c linux_getcwd.c linux_ioctl.c linux_ipc.c \
SRCS= linux_elf64.c linux_fork.c linux_dummy_machdep.c linux_file.c \
linux_event.c linux_futex.c linux_getcwd.c linux_ioctl.c linux_ipc.c \
linux_machdep.c linux_misc.c linux_ptrace.c linux_signal.c \
linux_socket.c linux_stats.c linux_sysctl.c linux_sysent.c \
linux_sysvec.c linux_time.c linux_vdso.c linux_timer.c \
@ -18,7 +18,6 @@ SRCS= linux_fork.c linux_dummy_machdep.c linux_file.c linux_event.c \
linux_support.s
.if ${MACHINE_CPUARCH} == "amd64"
SRCS+= linux_dummy_x86.c
SRCS+= linux_elf64.c
.endif
DPSRCS= assym.inc linux_genassym.c