Those were completely screwed up with the recent rework. Signed-off-by: Jan Beulich --- arch/x86/kernel/entry_64.S | 193 +++++++++++++++++++++++---------------------- 1 file changed, 102 insertions(+), 91 deletions(-) --- linux-2.6.29-rc7/arch/x86/kernel/entry_64.S 2009-03-11 17:52:10.000000000 +0100 +++ 2.6.29-rc7-x86_64-unwind/arch/x86/kernel/entry_64.S 2009-03-10 16:41:53.000000000 +0100 @@ -38,6 +38,7 @@ */ #include +#include #include #include #include @@ -255,21 +256,21 @@ ENTRY(native_usergs_sysret64) /* * initial frame state for interrupts (and exceptions without error code) */ - .macro EMPTY_FRAME start=1 offset=0 - .if \start + .macro EMPTY_FRAME offset=0 CFI_STARTPROC simple CFI_SIGNAL_FRAME - CFI_DEF_CFA rsp,8+\offset - .else - CFI_DEF_CFA_OFFSET 8+\offset - .endif + CFI_DEF_CFA rsp,\offset .endm /* * initial frame state for interrupts (and exceptions without error code) */ .macro INTR_FRAME start=1 offset=0 - EMPTY_FRAME \start, SS+8+\offset-RIP + .if \start + EMPTY_FRAME __stringify(SS+8+\offset-RIP) + .else + CFI_DEF_CFA_OFFSET SS+8+\offset-RIP + .endif /*CFI_REL_OFFSET ss, SS+\offset-RIP*/ CFI_REL_OFFSET rsp, RSP+\offset-RIP /*CFI_REL_OFFSET rflags, EFLAGS+\offset-RIP*/ @@ -282,15 +283,16 @@ ENTRY(native_usergs_sysret64) * with vector already pushed) */ .macro XCPT_FRAME start=1 offset=0 - INTR_FRAME \start, RIP+\offset-ORIG_RAX - /*CFI_REL_OFFSET orig_rax, ORIG_RAX-ORIG_RAX*/ + INTR_FRAME \start, __stringify(RIP+\offset-ORIG_RAX) .endm /* * frame that enables calling into C. */ .macro PARTIAL_FRAME start=1 offset=0 - XCPT_FRAME \start, ORIG_RAX+\offset-ARGOFFSET + .if \start >= 0 + XCPT_FRAME \start, __stringify(ORIG_RAX+\offset-ARGOFFSET) + .endif CFI_REL_OFFSET rdi, RDI+\offset-ARGOFFSET CFI_REL_OFFSET rsi, RSI+\offset-ARGOFFSET CFI_REL_OFFSET rdx, RDX+\offset-ARGOFFSET @@ -306,7 +308,9 @@ ENTRY(native_usergs_sysret64) * frame that enables passing a complete pt_regs to a C function. */ .macro DEFAULT_FRAME start=1 offset=0 - PARTIAL_FRAME \start, R11+\offset-R15 + .if \start >= -1 + PARTIAL_FRAME \start, __stringify(R11+\offset-R15) + .endif CFI_REL_OFFSET rbx, RBX+\offset CFI_REL_OFFSET rbp, RBP+\offset CFI_REL_OFFSET r12, R12+\offset @@ -317,21 +321,23 @@ ENTRY(native_usergs_sysret64) /* save partial stack frame */ ENTRY(save_args) - XCPT_FRAME + XCPT_FRAME offset=__stringify(ORIG_RAX-ARGOFFSET+16) cld - movq_cfi rdi, RDI+16-ARGOFFSET - movq_cfi rsi, RSI+16-ARGOFFSET - movq_cfi rdx, RDX+16-ARGOFFSET - movq_cfi rcx, RCX+16-ARGOFFSET - movq_cfi rax, RAX+16-ARGOFFSET - movq_cfi r8, R8+16-ARGOFFSET - movq_cfi r9, R9+16-ARGOFFSET - movq_cfi r10, R10+16-ARGOFFSET - movq_cfi r11, R11+16-ARGOFFSET + movq %rdi, RDI+16-ARGOFFSET(%rsp) + movq %rsi, RSI+16-ARGOFFSET(%rsp) + movq %rdx, RDX+16-ARGOFFSET(%rsp) + movq %rcx, RCX+16-ARGOFFSET(%rsp) + movq_cfi rax, __stringify(RAX+16-ARGOFFSET) + movq %r8, R8+16-ARGOFFSET(%rsp) + movq %r9, R9+16-ARGOFFSET(%rsp) + movq %r10, R10+16-ARGOFFSET(%rsp) + movq_cfi r11, __stringify(R11+16-ARGOFFSET) leaq -ARGOFFSET+16(%rsp),%rdi /* arg1 for handler */ movq_cfi rbp, 8 /* push %rbp */ leaq 8(%rsp), %rbp /* mov %rsp, %ebp */ + CFI_DEF_CFA_REGISTER rbp + CFI_ADJUST_CFA_OFFSET -8 testl $3, CS(%rdi) je 1f SWAPGS @@ -343,11 +349,10 @@ ENTRY(save_args) */ 1: incl PER_CPU_VAR(irq_count) jne 2f - popq_cfi %rax /* move return address... */ + popq %rax /* move return address... */ mov PER_CPU_VAR(irq_stack_ptr),%rsp - EMPTY_FRAME 0 - pushq_cfi %rbp /* backlink for unwinder */ - pushq_cfi %rax /* ... to the new stack */ + pushq %rbp /* backlink for unwinder */ + pushq %rax /* ... to the new stack */ /* * We entered an interrupt context - irqs are off: */ @@ -357,14 +362,14 @@ ENTRY(save_args) END(save_args) ENTRY(save_rest) - PARTIAL_FRAME 1 REST_SKIP+8 + CFI_STARTPROC movq 5*8+16(%rsp), %r11 /* save return address */ - movq_cfi rbx, RBX+16 - movq_cfi rbp, RBP+16 - movq_cfi r12, R12+16 - movq_cfi r13, R13+16 - movq_cfi r14, R14+16 - movq_cfi r15, R15+16 + movq %rbx, RBX+16(%rsp) + movq %rbp, RBP+16(%rsp) + movq %r12, R12+16(%rsp) + movq %r13, R13+16(%rsp) + movq %r14, R14+16(%rsp) + movq %r15, R15+16(%rsp) movq %r11, 8(%rsp) /* return address */ FIXUP_TOP_OF_STACK %r11, 16 ret @@ -373,23 +378,23 @@ END(save_rest) /* save complete stack frame */ ENTRY(save_paranoid) - XCPT_FRAME 1 RDI+8 + XCPT_FRAME offset=__stringify(ORIG_RAX-R15+8) cld - movq_cfi rdi, RDI+8 - movq_cfi rsi, RSI+8 - movq_cfi rdx, RDX+8 - movq_cfi rcx, RCX+8 - movq_cfi rax, RAX+8 - movq_cfi r8, R8+8 - movq_cfi r9, R9+8 - movq_cfi r10, R10+8 - movq_cfi r11, R11+8 - movq_cfi rbx, RBX+8 - movq_cfi rbp, RBP+8 - movq_cfi r12, R12+8 - movq_cfi r13, R13+8 - movq_cfi r14, R14+8 - movq_cfi r15, R15+8 + movq %rdi, RDI+8(%rsp) + movq %rsi, RSI+8(%rsp) + movq_cfi rdx, __stringify(RDX+8) + movq_cfi rcx, __stringify(RCX+8) + movq_cfi rax, __stringify(RAX+8) + movq %r8, R8+8(%rsp) + movq %r9, R9+8(%rsp) + movq %r10, R10+8(%rsp) + movq %r11, R11+8(%rsp) + movq_cfi rbx, __stringify(RBX+8) + movq %rbp, RBP+8(%rsp) + movq %r12, R12+8(%rsp) + movq %r13, R13+8(%rsp) + movq %r14, R14+8(%rsp) + movq %r15, R15+8(%rsp) movl $1,%ebx movl $MSR_GS_BASE,%ecx rdmsr @@ -706,7 +711,7 @@ ENTRY(\label) subq $REST_SKIP, %rsp CFI_ADJUST_CFA_OFFSET REST_SKIP call save_rest - DEFAULT_FRAME 0 8 /* offset 8: return address */ + DEFAULT_FRAME -2 8 /* offset 8: return address */ leaq 8(%rsp), \arg /* pt_regs pointer */ call \func jmp ptregscall_common @@ -723,12 +728,12 @@ END(\label) ENTRY(ptregscall_common) DEFAULT_FRAME 1 8 /* offset 8: return address */ RESTORE_TOP_OF_STACK %r11, 8 - movq_cfi_restore R15+8, r15 - movq_cfi_restore R14+8, r14 - movq_cfi_restore R13+8, r13 - movq_cfi_restore R12+8, r12 - movq_cfi_restore RBP+8, rbp - movq_cfi_restore RBX+8, rbx + movq_cfi_restore __stringify(R15+8), r15 + movq_cfi_restore __stringify(R14+8), r14 + movq_cfi_restore __stringify(R13+8), r13 + movq_cfi_restore __stringify(R12+8), r12 + movq_cfi_restore __stringify(RBP+8), rbp + movq_cfi_restore __stringify(RBX+8), rbx ret $REST_SKIP /* pop extended registers */ CFI_ENDPROC END(ptregscall_common) @@ -817,10 +822,12 @@ END(interrupt) /* 0(%rsp): ~(interrupt number) */ .macro interrupt func - subq $10*8, %rsp - CFI_ADJUST_CFA_OFFSET 10*8 + subq $ORIG_RAX-ARGOFFSET+8, %rsp + CFI_ADJUST_CFA_OFFSET ORIG_RAX-ARGOFFSET+8 call save_args - PARTIAL_FRAME 0 + PARTIAL_FRAME -1 8 + CFI_REL_OFFSET rbp, 0 + CFI_DEF_CFA_REGISTER rbp call \func .endm @@ -1033,10 +1040,10 @@ ENTRY(\sym) INTR_FRAME PARAVIRT_ADJUST_EXCEPTION_FRAME pushq_cfi $-1 /* ORIG_RAX: no syscall to restart */ - subq $15*8,%rsp - CFI_ADJUST_CFA_OFFSET 15*8 + subq $ORIG_RAX-R15, %rsp + CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 call error_entry - DEFAULT_FRAME 0 + DEFAULT_FRAME -1 movq %rsp,%rdi /* pt_regs pointer */ xorl %esi,%esi /* no error code */ call \do_sym @@ -1051,8 +1058,10 @@ ENTRY(\sym) PARAVIRT_ADJUST_EXCEPTION_FRAME pushq $-1 /* ORIG_RAX: no syscall to restart */ CFI_ADJUST_CFA_OFFSET 8 - subq $15*8, %rsp + subq $ORIG_RAX-R15, %rsp + CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 call save_paranoid + DEFAULT_FRAME -1 TRACE_IRQS_OFF movq %rsp,%rdi /* pt_regs pointer */ xorl %esi,%esi /* no error code */ @@ -1068,8 +1077,10 @@ ENTRY(\sym) PARAVIRT_ADJUST_EXCEPTION_FRAME pushq $-1 /* ORIG_RAX: no syscall to restart */ CFI_ADJUST_CFA_OFFSET 8 - subq $15*8, %rsp + subq $ORIG_RAX-R15, %rsp + CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 call save_paranoid + DEFAULT_FRAME -1 TRACE_IRQS_OFF movq %rsp,%rdi /* pt_regs pointer */ xorl %esi,%esi /* no error code */ @@ -1086,10 +1097,10 @@ END(\sym) ENTRY(\sym) XCPT_FRAME PARAVIRT_ADJUST_EXCEPTION_FRAME - subq $15*8,%rsp - CFI_ADJUST_CFA_OFFSET 15*8 + subq $ORIG_RAX-R15, %rsp + CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 call error_entry - DEFAULT_FRAME 0 + DEFAULT_FRAME -1 movq %rsp,%rdi /* pt_regs pointer */ movq ORIG_RAX(%rsp),%rsi /* get error code */ movq $-1,ORIG_RAX(%rsp) /* no syscall to restart */ @@ -1104,10 +1115,10 @@ END(\sym) ENTRY(\sym) XCPT_FRAME PARAVIRT_ADJUST_EXCEPTION_FRAME - subq $15*8,%rsp - CFI_ADJUST_CFA_OFFSET 15*8 + subq $ORIG_RAX-R15, %rsp + CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 call save_paranoid - DEFAULT_FRAME 0 + DEFAULT_FRAME -1 TRACE_IRQS_OFF movq %rsp,%rdi /* pt_regs pointer */ movq ORIG_RAX(%rsp),%rsi /* get error code */ @@ -1400,7 +1411,7 @@ paranoidzeroentry machine_check do_machi /* ebx: no swapgs flag */ ENTRY(paranoid_exit) - INTR_FRAME + DEFAULT_FRAME DISABLE_INTERRUPTS(CLBR_NONE) TRACE_IRQS_OFF testl %ebx,%ebx /* swapgs needed? */ @@ -1447,25 +1458,24 @@ END(paranoid_exit) * returns in "no swapgs flag" in %ebx. */ ENTRY(error_entry) - XCPT_FRAME - CFI_ADJUST_CFA_OFFSET 15*8 + XCPT_FRAME offset=__stringify(ORIG_RAX-R15+8) /* oldrax contains error code */ cld - movq_cfi rdi, RDI+8 - movq_cfi rsi, RSI+8 - movq_cfi rdx, RDX+8 - movq_cfi rcx, RCX+8 - movq_cfi rax, RAX+8 - movq_cfi r8, R8+8 - movq_cfi r9, R9+8 - movq_cfi r10, R10+8 - movq_cfi r11, R11+8 - movq_cfi rbx, RBX+8 - movq_cfi rbp, RBP+8 - movq_cfi r12, R12+8 - movq_cfi r13, R13+8 - movq_cfi r14, R14+8 - movq_cfi r15, R15+8 + movq %rdi, RDI+8(%rsp) + movq %rsi, RSI+8(%rsp) + movq %rdx, RDX+8(%rsp) + movq %rcx, RCX+8(%rsp) + movq %rax, RAX+8(%rsp) + movq %r8, R8+8(%rsp) + movq %r9, R9+8(%rsp) + movq %r10, R10+8(%rsp) + movq %r11, R11+8(%rsp) + movq_cfi rbx, __stringify(RBX+8) + movq %rbp, RBP+8(%rsp) + movq %r12, R12+8(%rsp) + movq %r13, R13+8(%rsp) + movq %r14, R14+8(%rsp) + movq %r15, R15+8(%rsp) xorl %ebx,%ebx testl $3,CS+8(%rsp) je error_kernelspace @@ -1474,7 +1484,6 @@ error_swapgs: error_sti: TRACE_IRQS_OFF ret - CFI_ENDPROC /* * There are two places in the kernel that can potentially fault with @@ -1484,6 +1493,7 @@ error_sti: * compat mode. Check for these here too. */ error_kernelspace: + CFI_REL_OFFSET rcx, RCX+8 incl %ebx leaq irq_return(%rip),%rcx cmpq %rcx,RIP+8(%rsp) @@ -1494,6 +1504,7 @@ error_kernelspace: cmpq $gs_change,RIP+8(%rsp) je error_swapgs jmp error_sti + CFI_ENDPROC END(error_entry) @@ -1522,10 +1533,10 @@ ENTRY(nmi) INTR_FRAME PARAVIRT_ADJUST_EXCEPTION_FRAME pushq_cfi $-1 - subq $15*8, %rsp - CFI_ADJUST_CFA_OFFSET 15*8 + subq $ORIG_RAX-R15, %rsp + CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 call save_paranoid - DEFAULT_FRAME 0 + DEFAULT_FRAME -1 /* paranoidentry do_nmi, 0; without TRACE_IRQS_OFF */ movq %rsp,%rdi movq $-1,%rsi