mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-02-15 20:18:04 -05:00
50471f8b73
Pull parisc architecture updates from Helge Deller:
"A fix which allows booting on the very old 710 workstations, and two
fixes in the syscall entry/exit path which allow to execute 64-bit
userspace binaries.
Note that although we currently have a 64-bit (static) kernel to allow
more than 4 GB physical RAM, there is no support for 64-bit userspace
for parisc-linux yet, but Dave and Sven are making slowly progress to
port and fix glibc and gcc.
Summary:
- Fix boot on 710 workstation by not reprogramming ASP chip
- Fix 64bit userspace syscalls (64-bit userspace is still being
developed)
- minor code cleanups in asm/bug.h and perf_regs.c"
* tag 'parisc-for-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Do not reprogram affinitiy on ASP chip
parisc: Drop linux/kernel.h include from asm/bug.h header
parisc: remove unneeded semicolon in perf_regs.c
parisc: entry.S: fix space adjustment on interruption for 64-bit userspace
parisc: entry: set W bit for !compat tasks in syscall_restore_rfi()
parisc: Drop padding fields and layers entries from inventory log
100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _PARISC_BUG_H
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#define _PARISC_BUG_H
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/*
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* Tell the user there is some problem.
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* The offending file and line are encoded in the __bug_table section.
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*/
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#ifdef CONFIG_BUG
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#define HAVE_ARCH_BUG
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#define HAVE_ARCH_WARN_ON
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/* the break instruction is used as BUG() marker. */
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#define PARISC_BUG_BREAK_ASM "break 0x1f, 0x1fff"
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#define PARISC_BUG_BREAK_INSN 0x03ffe01f /* PARISC_BUG_BREAK_ASM */
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#ifdef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
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# define __BUG_REL(val) ".word " __stringify(val) " - ."
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#else
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# define __BUG_REL(val) ".word " __stringify(val)
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#endif
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#ifdef CONFIG_DEBUG_BUGVERBOSE
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#define BUG() \
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do { \
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asm volatile("\n" \
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"1:\t" PARISC_BUG_BREAK_ASM "\n" \
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"\t.pushsection __bug_table,\"a\"\n" \
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"\t.align 4\n" \
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"2:\t" __BUG_REL(1b) "\n" \
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"\t" __BUG_REL(%c0) "\n" \
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"\t.short %1, %2\n" \
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"\t.blockz %3-2*4-2*2\n" \
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"\t.popsection" \
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: : "i" (__FILE__), "i" (__LINE__), \
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"i" (0), "i" (sizeof(struct bug_entry)) ); \
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unreachable(); \
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} while(0)
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#else
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#define BUG() \
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do { \
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asm volatile(PARISC_BUG_BREAK_ASM : : ); \
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unreachable(); \
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} while(0)
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#endif
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#ifdef CONFIG_DEBUG_BUGVERBOSE
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#define __WARN_FLAGS(cond_str, flags) \
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do { \
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asm volatile("\n" \
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"1:\t" PARISC_BUG_BREAK_ASM "\n" \
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"\t.pushsection __bug_table,\"a\"\n" \
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"\t.align 4\n" \
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"2:\t" __BUG_REL(1b) "\n" \
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"\t" __BUG_REL(%c0) "\n" \
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"\t.short %1, %2\n" \
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"\t.blockz %3-2*4-2*2\n" \
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"\t.popsection" \
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: : "i" (WARN_CONDITION_STR(cond_str) __FILE__), "i" (__LINE__), \
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"i" (BUGFLAG_WARNING|(flags)), \
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"i" (sizeof(struct bug_entry)) ); \
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} while(0)
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#else
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#define __WARN_FLAGS(cond_str, flags) \
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do { \
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asm volatile("\n" \
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"1:\t" PARISC_BUG_BREAK_ASM "\n" \
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"\t.pushsection __bug_table,\"a\"\n" \
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"\t.align 4\n" \
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"2:\t" __BUG_REL(1b) "\n" \
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"\t.short %0\n" \
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"\t.blockz %1-4-2\n" \
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"\t.popsection" \
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: : "i" (BUGFLAG_WARNING|(flags)), \
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"i" (sizeof(struct bug_entry)) ); \
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} while(0)
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#endif
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#define WARN_ON(x) ({ \
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int __ret_warn_on = !!(x); \
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if (__builtin_constant_p(__ret_warn_on)) { \
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if (__ret_warn_on) \
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__WARN(); \
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} else { \
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if (unlikely(__ret_warn_on)) \
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__WARN(); \
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} \
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unlikely(__ret_warn_on); \
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})
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#endif
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#include <asm-generic/bug.h>
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#endif
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