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5de2b61a63
Sometimes it is helpful to build a kernel compilation unit
directly, i.e.:
make .../<filename>.i
in order to look at compiler output.
Since asm-offsets_{32,64}.c are included by asm-offsets.c and
building them directly doesn't evaluate the macros used (thus
making the preprocessor output not very useful), error out when
an attempt is made to build them. Issue a hint for the user to
build asm-offsets.c instead.
Suggested-by: Michael Matz <matz@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1418139917-12722-1-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
95 lines
2.0 KiB
C
95 lines
2.0 KiB
C
#ifndef __LINUX_KBUILD_H
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# error "Please do not build this file directly, build asm-offsets.c instead"
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#endif
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#include <asm/ia32.h>
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#define __SYSCALL_64(nr, sym, compat) [nr] = 1,
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#define __SYSCALL_COMMON(nr, sym, compat) [nr] = 1,
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#ifdef CONFIG_X86_X32_ABI
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# define __SYSCALL_X32(nr, sym, compat) [nr] = 1,
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#else
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# define __SYSCALL_X32(nr, sym, compat) /* nothing */
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#endif
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static char syscalls_64[] = {
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#include <asm/syscalls_64.h>
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};
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#define __SYSCALL_I386(nr, sym, compat) [nr] = 1,
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static char syscalls_ia32[] = {
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#include <asm/syscalls_32.h>
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};
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int main(void)
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{
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#ifdef CONFIG_PARAVIRT
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OFFSET(PV_IRQ_adjust_exception_frame, pv_irq_ops, adjust_exception_frame);
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OFFSET(PV_CPU_usergs_sysret32, pv_cpu_ops, usergs_sysret32);
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OFFSET(PV_CPU_usergs_sysret64, pv_cpu_ops, usergs_sysret64);
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OFFSET(PV_CPU_swapgs, pv_cpu_ops, swapgs);
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BLANK();
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#endif
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#ifdef CONFIG_IA32_EMULATION
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OFFSET(TI_sysenter_return, thread_info, sysenter_return);
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BLANK();
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#define ENTRY(entry) OFFSET(IA32_SIGCONTEXT_ ## entry, sigcontext_ia32, entry)
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ENTRY(ax);
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ENTRY(bx);
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ENTRY(cx);
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ENTRY(dx);
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ENTRY(si);
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ENTRY(di);
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ENTRY(bp);
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ENTRY(sp);
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ENTRY(ip);
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BLANK();
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#undef ENTRY
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OFFSET(IA32_RT_SIGFRAME_sigcontext, rt_sigframe_ia32, uc.uc_mcontext);
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BLANK();
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#endif
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#define ENTRY(entry) OFFSET(pt_regs_ ## entry, pt_regs, entry)
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ENTRY(bx);
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ENTRY(bx);
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ENTRY(cx);
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ENTRY(dx);
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ENTRY(sp);
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ENTRY(bp);
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ENTRY(si);
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ENTRY(di);
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ENTRY(r8);
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ENTRY(r9);
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ENTRY(r10);
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ENTRY(r11);
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ENTRY(r12);
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ENTRY(r13);
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ENTRY(r14);
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ENTRY(r15);
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ENTRY(flags);
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BLANK();
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#undef ENTRY
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#define ENTRY(entry) OFFSET(saved_context_ ## entry, saved_context, entry)
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ENTRY(cr0);
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ENTRY(cr2);
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ENTRY(cr3);
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ENTRY(cr4);
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ENTRY(cr8);
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ENTRY(gdt_desc);
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BLANK();
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#undef ENTRY
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OFFSET(TSS_ist, tss_struct, x86_tss.ist);
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BLANK();
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DEFINE(__NR_syscall_max, sizeof(syscalls_64) - 1);
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DEFINE(NR_syscalls, sizeof(syscalls_64));
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DEFINE(__NR_ia32_syscall_max, sizeof(syscalls_ia32) - 1);
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DEFINE(IA32_NR_syscalls, sizeof(syscalls_ia32));
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return 0;
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}
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