2007-10-11 03:12:08 -06:00
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#include <asm/ucontext.h>
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#include <linux/lguest.h>
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#include "../../../drivers/lguest/lg.h"
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2011-11-11 17:07:41 -07:00
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#define __SYSCALL_I386(nr, sym, compat) [nr] = 1,
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static char syscalls[] = {
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#include <asm/syscalls_32.h>
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};
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2007-10-11 03:12:08 -06:00
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/* workaround for a warning with -Wmissing-prototypes */
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void foo(void);
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void foo(void)
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{
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2008-01-30 05:30:56 -07:00
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OFFSET(IA32_SIGCONTEXT_ax, sigcontext, ax);
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OFFSET(IA32_SIGCONTEXT_bx, sigcontext, bx);
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OFFSET(IA32_SIGCONTEXT_cx, sigcontext, cx);
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OFFSET(IA32_SIGCONTEXT_dx, sigcontext, dx);
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OFFSET(IA32_SIGCONTEXT_si, sigcontext, si);
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OFFSET(IA32_SIGCONTEXT_di, sigcontext, di);
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OFFSET(IA32_SIGCONTEXT_bp, sigcontext, bp);
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OFFSET(IA32_SIGCONTEXT_sp, sigcontext, sp);
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OFFSET(IA32_SIGCONTEXT_ip, sigcontext, ip);
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2007-10-11 03:12:08 -06:00
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BLANK();
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OFFSET(CPUINFO_x86, cpuinfo_x86, x86);
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OFFSET(CPUINFO_x86_vendor, cpuinfo_x86, x86_vendor);
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OFFSET(CPUINFO_x86_model, cpuinfo_x86, x86_model);
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OFFSET(CPUINFO_x86_mask, cpuinfo_x86, x86_mask);
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OFFSET(CPUINFO_hard_math, cpuinfo_x86, hard_math);
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OFFSET(CPUINFO_cpuid_level, cpuinfo_x86, cpuid_level);
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OFFSET(CPUINFO_x86_capability, cpuinfo_x86, x86_capability);
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OFFSET(CPUINFO_x86_vendor_id, cpuinfo_x86, x86_vendor_id);
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BLANK();
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OFFSET(TI_sysenter_return, thread_info, sysenter_return);
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OFFSET(TI_cpu, thread_info, cpu);
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BLANK();
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2008-01-30 05:30:56 -07:00
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OFFSET(PT_EBX, pt_regs, bx);
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OFFSET(PT_ECX, pt_regs, cx);
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OFFSET(PT_EDX, pt_regs, dx);
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OFFSET(PT_ESI, pt_regs, si);
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OFFSET(PT_EDI, pt_regs, di);
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OFFSET(PT_EBP, pt_regs, bp);
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OFFSET(PT_EAX, pt_regs, ax);
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OFFSET(PT_DS, pt_regs, ds);
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OFFSET(PT_ES, pt_regs, es);
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OFFSET(PT_FS, pt_regs, fs);
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2009-02-09 06:17:40 -07:00
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OFFSET(PT_GS, pt_regs, gs);
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2008-01-30 05:30:56 -07:00
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OFFSET(PT_ORIG_EAX, pt_regs, orig_ax);
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OFFSET(PT_EIP, pt_regs, ip);
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OFFSET(PT_CS, pt_regs, cs);
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OFFSET(PT_EFLAGS, pt_regs, flags);
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OFFSET(PT_OLDESP, pt_regs, sp);
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OFFSET(PT_OLDSS, pt_regs, ss);
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2007-10-11 03:12:08 -06:00
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BLANK();
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2008-01-30 05:30:41 -07:00
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OFFSET(IA32_RT_SIGFRAME_sigcontext, rt_sigframe, uc.uc_mcontext);
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2007-10-11 03:12:08 -06:00
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BLANK();
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2008-01-30 05:31:02 -07:00
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/* Offset from the sysenter stack to tss.sp0 */
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DEFINE(TSS_sysenter_sp0, offsetof(struct tss_struct, x86_tss.sp0) -
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2007-10-11 03:12:08 -06:00
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sizeof(struct tss_struct));
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2008-02-19 00:16:03 -07:00
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#if defined(CONFIG_LGUEST) || defined(CONFIG_LGUEST_GUEST) || defined(CONFIG_LGUEST_MODULE)
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2007-10-11 03:12:08 -06:00
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BLANK();
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OFFSET(LGUEST_DATA_irq_enabled, lguest_data, irq_enabled);
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lguest: optimize by coding restore_flags and irq_enable in assembler.
The downside of the last patch which made restore_flags and irq_enable
check interrupts is that they are now too big to be patched directly
into the callsites, so the C versions are always used.
But the C versions go via PV_CALLEE_SAVE_REGS_THUNK which saves all
the registers. In fact, we don't need any registers in the fast path,
so we can do better than this if we actually code them in assembler.
The results are in the noise, but since it's about the same amount of
code, it's worth applying.
1GB Guest->Host: input(suppressed),output(suppressed)
Before:
Seconds: 0:16.53
Packets: 377268,753673
Interrupts: 22461,24297
Notifications: 1(5245),21303(732370)
Net IRQs triggered: 377023(245),42578(711095)
After:
Seconds: 0:16.48
Packets: 377289,753673
Interrupts: 22281,24465
Notifications: 1(5245),21296(732377)
Net IRQs triggered: 377060(229),42564(711109)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-06-12 22:27:03 -06:00
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OFFSET(LGUEST_DATA_irq_pending, lguest_data, irq_pending);
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2008-02-03 13:11:10 -07:00
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BLANK();
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2007-10-11 03:12:08 -06:00
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OFFSET(LGUEST_PAGES_host_gdt_desc, lguest_pages, state.host_gdt_desc);
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OFFSET(LGUEST_PAGES_host_idt_desc, lguest_pages, state.host_idt_desc);
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OFFSET(LGUEST_PAGES_host_cr3, lguest_pages, state.host_cr3);
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OFFSET(LGUEST_PAGES_host_sp, lguest_pages, state.host_sp);
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OFFSET(LGUEST_PAGES_guest_gdt_desc, lguest_pages,state.guest_gdt_desc);
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OFFSET(LGUEST_PAGES_guest_idt_desc, lguest_pages,state.guest_idt_desc);
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OFFSET(LGUEST_PAGES_guest_gdt, lguest_pages, state.guest_gdt);
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OFFSET(LGUEST_PAGES_regs_trapnum, lguest_pages, regs.trapnum);
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OFFSET(LGUEST_PAGES_regs_errcode, lguest_pages, regs.errcode);
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OFFSET(LGUEST_PAGES_regs, lguest_pages, regs);
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#endif
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2011-11-11 17:07:41 -07:00
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BLANK();
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DEFINE(__NR_syscall_max, sizeof(syscalls) - 1);
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DEFINE(NR_syscalls, sizeof(syscalls));
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2007-10-11 03:12:08 -06:00
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}
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