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| author | Edward Tomasz Napierala <trasz@FreeBSD.org> | 2021-11-03 08:54:30 +0000 |
|---|---|---|
| committer | Edward Tomasz Napierala <trasz@FreeBSD.org> | 2021-11-03 08:54:35 +0000 |
| commit | c91d0e59be10f9412cbce467b8b038f006bb6f18 (patch) | |
| tree | 19f493be5f6ce44e92b610f2d2e514230f1b9c02 | |
| parent | 4dfd612286ec2ecc7a05f3d4fd65a58f4b05f74c (diff) | |
| download | src-c91d0e59be10f9412cbce467b8b038f006bb6f18.tar.gz src-c91d0e59be10f9412cbce467b8b038f006bb6f18.zip | |
linux: Make linux_ptrace.c portable
Make sys/amd64/linux/linux_ptrace.c machine-independent,
in preparation for moving it into sys/compat/linux/.
No functional changes.
Reviewed By: kib
Sponsored By: EPSRC
Differential Revision: https://reviews.freebsd.org/D32756
| -rw-r--r-- | sys/amd64/linux/linux_ptrace.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/sys/amd64/linux/linux_ptrace.c b/sys/amd64/linux/linux_ptrace.c index 191e6265b39c..2ebf1c2be997 100644 --- a/sys/amd64/linux/linux_ptrace.c +++ b/sys/amd64/linux/linux_ptrace.c @@ -108,6 +108,7 @@ __FBSDID("$FreeBSD$"); #define LINUX_PTRACE_PEEKUSER_DS 184 #define LINUX_ARCH_AMD64 0xc000003e +#define LINUX_ARCH_AARCH64 0xc00000b7 static int map_signum(int lsig, int *bsigp) @@ -217,6 +218,7 @@ linux_ptrace_peekuser(struct thread *td, pid_t pid, void *addr, void *data) return (error); switch ((uintptr_t)addr) { +#ifdef __amd64__ case LINUX_PTRACE_PEEKUSER_ORIG_RAX: val = b_reg.r_rax; break; @@ -229,6 +231,7 @@ linux_ptrace_peekuser(struct thread *td, pid_t pid, void *addr, void *data) case LINUX_PTRACE_PEEKUSER_DS: val = b_reg.r_ds; break; +#endif /* __amd64__ */ default: linux_msg(td, "PTRACE_PEEKUSER offset %ld not implemented; " "returning EINVAL", (uintptr_t)addr); @@ -343,20 +346,25 @@ linux_ptrace_getregs(struct thread *td, pid_t pid, void *data) struct ptrace_lwpinfo lwpinfo; struct reg b_reg; struct linux_pt_regset l_regset; +#ifdef __amd64__ struct pcb *pcb; +#endif int error; error = kern_ptrace(td, PT_GETREGS, pid, &b_reg, 0); if (error != 0) return (error); + bsd_to_linux_regset(&b_reg, &l_regset); + +#ifdef __amd64__ pcb = td->td_pcb; if (td == curthread) update_pcb_bases(pcb); - bsd_to_linux_regset(&b_reg, &l_regset); l_regset.fs_base = pcb->pcb_fsbase; l_regset.gs_base = pcb->pcb_gsbase; +#endif error = kern_ptrace(td, PT_LWPINFO, pid, &lwpinfo, sizeof(lwpinfo)); if (error != 0) { @@ -404,7 +412,9 @@ linux_ptrace_getregset_prstatus(struct thread *td, pid_t pid, l_ulong data) struct reg b_reg; struct linux_pt_regset l_regset; struct iovec iov; +#ifdef __amd64__ struct pcb *pcb; +#endif size_t len; int error; @@ -418,13 +428,16 @@ linux_ptrace_getregset_prstatus(struct thread *td, pid_t pid, l_ulong data) if (error != 0) return (error); + bsd_to_linux_regset(&b_reg, &l_regset); + +#ifdef __amd64__ pcb = td->td_pcb; if (td == curthread) update_pcb_bases(pcb); - bsd_to_linux_regset(&b_reg, &l_regset); l_regset.fs_base = pcb->pcb_fsbase; l_regset.gs_base = pcb->pcb_gsbase; +#endif error = kern_ptrace(td, PT_LWPINFO, pid, &lwpinfo, sizeof(lwpinfo)); if (error != 0) { @@ -569,9 +582,17 @@ linux_ptrace_get_syscall_info(struct thread *td, pid_t pid, if (error != 0) return (error); +#if defined(__amd64__) si.arch = LINUX_ARCH_AMD64; si.instruction_pointer = b_reg.r_rip; si.stack_pointer = b_reg.r_rsp; +#elif defined(__aarch64__) + si.arch = LINUX_ARCH_AARCH64; + si.instruction_pointer = b_reg.lr; + si.stack_pointer = b_reg.sp; +#else +#error "unknown architecture" +#endif len = MIN(len, sizeof(si)); error = copyout(&si, (void *)data, len); |