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author | peter <peter@FreeBSD.org> | 2005-06-30 07:49:22 +0000 |
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committer | peter <peter@FreeBSD.org> | 2005-06-30 07:49:22 +0000 |
commit | 921b3c5ee4556d6428b9c88c71d3b69e0da1345b (patch) | |
tree | dad118ce52d6d607680db2768f086c4ee826fd22 /sys/ia64/ia32 | |
parent | 14ff9254d85bc5b36288a2b4ba9db5bcb52f7587 (diff) | |
download | FreeBSD-src-921b3c5ee4556d6428b9c88c71d3b69e0da1345b.zip FreeBSD-src-921b3c5ee4556d6428b9c88c71d3b69e0da1345b.tar.gz |
Jumbo-commit to enhance 32 bit application support on 64 bit kernels.
This is good enough to be able to run a RELENG_4 gdb binary against
a RELENG_4 application, along with various other tools (eg: 4.x gcore).
We use this at work.
ia32_reg.[ch]: handle the 32 bit register file format, used by ptrace,
procfs and core dumps.
procfs_*regs.c: vary the format of proc/XXX/*regs depending on the client
and target application.
procfs_map.c: Don't print a 64 bit value to 32 bit consumers, or their
sscanf fails. They expect an unsigned long.
imgact_elf.c: produce a valid 32 bit coredump for 32 bit apps.
sys_process.c: handle 32 bit consumers debugging 32 bit targets. Note
that 64 bit consumers can still debug 32 bit targets.
IA64 has got stubs for ia32_reg.c.
Known limitations: a 5.x/6.x gdb uses get/setcontext(), which isn't
implemented in the 32/64 wrapper yet. We also make a tiny patch to
gdb pacify it over conflicting formats of ld-elf.so.1.
Approved by: re
Diffstat (limited to 'sys/ia64/ia32')
-rw-r--r-- | sys/ia64/ia32/ia32_reg.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/sys/ia64/ia32/ia32_reg.c b/sys/ia64/ia32/ia32_reg.c new file mode 100644 index 0000000..dde8b89 --- /dev/null +++ b/sys/ia64/ia32/ia32_reg.c @@ -0,0 +1,82 @@ +/*- + * Copyright (c) 2005 Peter Wemm + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/proc.h> +#include <sys/procfs.h> + +#include <compat/ia32/ia32_reg.h> + +int +fill_regs32(struct thread *td, struct reg32 *regs) +{ + + bzero(regs, sizeof(*regs)); + return (EOPNOTSUPP); +} + +int +set_regs32(struct thread *td, struct reg32 *regs) +{ + + return (EOPNOTSUPP); +} + +int +fill_fpregs32(struct thread *td, struct fpreg32 *regs) +{ + + bzero(regs, sizeof(*regs)); + return (EOPNOTSUPP); +} + +int +set_fpregs32(struct thread *td, struct fpreg32 *regs) +{ + + return (EOPNOTSUPP); +} + +int +fill_dbregs32(struct thread *td, struct dbreg32 *regs) +{ + + bzero(regs, sizeof(*regs)); + return (EOPNOTSUPP); +} + +int +set_dbregs32(struct thread *td, struct dbreg32 *regs) +{ + + return (EOPNOTSUPP); +} |