search for: popsect

...-162,17 +162,17 @@ 2: popl %es; \ 2: popl %es; \ CFI_ADJUST_CFA_OFFSET -4;\ /*CFI_RESTORE es;*/\ -.section .fixup,"ax"; \ +.pushsection .fixup,"ax"; \ 3: movl $0,(%esp); \ jmp 1b; \ 4: movl $0,(%esp); \ jmp 2b; \ -.previous; \ -.section __ex_table,"a";\ +.popsection \ +.pushsection __ex_table,"a";\ .align 4; \ .long 1b,3b; \ .long 2b,4b; \ -.previous +.popsection = #define RING0_INT_FRAME \ CFI_STARTPROC simple;\ @@ -300,10 +300,10 @@ sysenter_past_esp: cmpl $__PAGE_OFFSET-3,%ebp jae syscall_fault 1: movl (%ebp),%ebp -.section __e...

...-162,17 +162,17 @@ 2: popl %es; \ 2: popl %es; \ CFI_ADJUST_CFA_OFFSET -4;\ /*CFI_RESTORE es;*/\ -.section .fixup,"ax"; \ +.pushsection .fixup,"ax"; \ 3: movl $0,(%esp); \ jmp 1b; \ 4: movl $0,(%esp); \ jmp 2b; \ -.previous; \ -.section __ex_table,"a";\ +.popsection \ +.pushsection __ex_table,"a";\ .align 4; \ .long 1b,3b; \ .long 2b,4b; \ -.previous +.popsection = #define RING0_INT_FRAME \ CFI_STARTPROC simple;\ @@ -300,10 +300,10 @@ sysenter_past_esp: cmpl $__PAGE_OFFSET-3,%ebp jae syscall_fault 1: movl (%ebp),%ebp -.section __e...

Xen i386 xen-head.S fix sections mixup xen-head.S does not come back to the data section, leaving the text section as current section. It causes problems with a slightly enhanced DEBUG_RODATA that supports CONFIG_HOTPLUG and bringing a CPU up after the text has been marked read-only: reference to early_gdt_descr causes a page fault. It applies on 2.6.22-rc2-mm2. Signed-off-by: Mathieu Desnoyers

Xen i386 xen-head.S fix sections mixup xen-head.S does not come back to the data section, leaving the text section as current section. It causes problems with a slightly enhanced DEBUG_RODATA that supports CONFIG_HOTPLUG and bringing a CPU up after the text has been marked read-only: reference to early_gdt_descr causes a page fault. It applies on 2.6.22-rc2-mm2. Signed-off-by: Mathieu Desnoyers

Xen i386 xen-head.S fix sections mixup xen-head.S does not come back to the data section, leaving the text section as current section. It causes problems with a slightly enhanced DEBUG_RODATA that supports CONFIG_HOTPLUG and bringing a CPU up after the text has been marked read-only: reference to early_gdt_descr causes a page fault. It applies on 2.6.22-rc2-mm2. Signed-off-by: Mathieu Desnoyers

...6/include/asm/alternative-asm.h +++ b/arch/x86/include/asm/alternative-asm.h @@ -7,24 +7,16 @@ #include <asm/asm.h> #ifdef CONFIG_SMP -.macro LOCK_PREFIX_HERE + .macro LOCK_PREFIX +672: lock .pushsection .smp_locks,"a" .balign 4 - .long 671f - . # offset + .long 672b - . .popsection -671: -.endm - -.macro LOCK_PREFIX insn:vararg - LOCK_PREFIX_HERE - lock \insn -.endm + .endm #else -.macro LOCK_PREFIX_HERE -.endm - -.macro LOCK_PREFIX insn:vararg -.endm + .macro LOCK_PREFIX + .endm #endif /* diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternat...

...6/include/asm/alternative-asm.h +++ b/arch/x86/include/asm/alternative-asm.h @@ -7,24 +7,16 @@ #include <asm/asm.h> #ifdef CONFIG_SMP -.macro LOCK_PREFIX_HERE + .macro LOCK_PREFIX +672: lock .pushsection .smp_locks,"a" .balign 4 - .long 671f - . # offset + .long 672b - . .popsection -671: -.endm - -.macro LOCK_PREFIX insn:vararg - LOCK_PREFIX_HERE - lock \insn -.endm + .endm #else -.macro LOCK_PREFIX_HERE -.endm - -.macro LOCK_PREFIX insn:vararg -.endm + .macro LOCK_PREFIX + .endm #endif /* diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternat...

...6/include/asm/alternative-asm.h +++ b/arch/x86/include/asm/alternative-asm.h @@ -7,24 +7,16 @@ #include <asm/asm.h> #ifdef CONFIG_SMP -.macro LOCK_PREFIX_HERE + .macro LOCK_PREFIX +672: lock .pushsection .smp_locks,"a" .balign 4 - .long 671f - . # offset + .long 672b - . .popsection -671: -.endm - -.macro LOCK_PREFIX insn:vararg - LOCK_PREFIX_HERE - lock \insn -.endm + .endm #else -.macro LOCK_PREFIX_HERE -.endm - -.macro LOCK_PREFIX insn:vararg -.endm + .macro LOCK_PREFIX + .endm #endif /* diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternat...

.../* * Return to user mode is not as complex as all this looks, * but we want the default path for a system call return to * go as quickly as possible which is why some of this is @@ -372,10 +368,6 @@ need_resched: END(resume_kernel) #endif CFI_ENDPROC -/* - * End of kprobes section - */ - .popsection /* SYSENTER_RETURN points to after the "sysenter" instruction in the vsyscall page. See vsyscall-sysentry.S, which defines the symbol. */ @@ -495,10 +487,6 @@ sysexit_audit: PTGS_TO_GS_EX ENDPROC(ia32_sysenter_target) -/* - * syscall stub including irq exit should be prot...

...\ 141:; \ .skip -(((144f-143f)-(141b-140b)) > 0) * \ ((144f-143f)-(141b-140b)),0x90; \ 142:; \ - .pushsection .altinstructions, "a"; \ + .pushsection section, "a"; \ altinstruction_entry 140b,143f,feature,142b-140b,144f-143f,142b-141b;\ .popsection; \ .pushsection .altinstr_replacement, "ax"; \ @@ -55,6 +55,11 @@ 144:; \ .popsection +#define ARGS(args...) args + +#define ALTERNATIVE(oldinstr, newinstr, feature) \ + __ALTERNATIVE(.altinstructions, ARGS(oldinstr), ARGS(newinstr), feature) + #define old_len...

...       do {                                      \ > >          asm goto ("0: nop;"                     \ > >                    ".pushsection trace_table;"   \ > >                    ".long 0b, %l0;"              \ > >                    ".popsection"                 \ > >                    : : : : trace#NUM);           \ > >          if (0) { trace#NUM: trace(); }          \ > >        } while (0) > >      #define TRACE  TRACE1(__COUNTER__) > > In this example (which in fact inspired the asm goto feature)...

...onst unsigned char vmovdqu_to_mem[]; + + asm volatile ( "vpcmpeqb %%xmm2, %%xmm2, %%xmm2\n" + ".pushsection .test, \"a\", @progbits\n" + "vmovdqu_to_mem: vmovdqu %%ymm2, (%0)\n" + ".popsection" :: "c" (NULL) ); + + memcpy(instr, vmovdqu_to_mem, 15); + memset(res, 0x55, 128); + memset(res + 16, 0xff, 16); + memset(res + 20, 0x00, 16); + regs.eip = (unsigned long)&instr[0]; + regs.ecx = (unsigned long)res; + rc =...

...than @oldinstr. */ -.macro ALTERNATIVE oldinstr, newinstr, feature -140: - \oldinstr -141: - .skip -(((144f-143f)-(141b-140b)) > 0) * ((144f-143f)-(141b-140b)),0x90 -142: - - .pushsection .altinstructions,"a" - altinstruction_entry 140b,143f,\feature,142b-140b,144f-143f,142b-141b - .popsection - - .pushsection .altinstr_replacement,"ax" -143: - \newinstr -144: +#define ALTERNATIVE(oldinstr, newinstr, feature) \ +140:; \ + oldinstr; \ +141:; \ + .skip -(((144f-143f)-(141b-140b)) > 0) * \ + ((144f-143f)-(141b-140b)),0x90; \ +142:; \ + ....

...do { \ > > asm goto ("0: nop;" \ > > ".pushsection trace_table;" \ > > ".long 0b, %l0;" \ > > ".popsection" \ > > : : : : trace#NUM); \ > > if (0) { trace#NUM: trace(); } \ > > } while (0) > > #define TRACE TRACE1(__COUNTER__) > > In this example (which in fact inspired the asm goto feature)...

...s we #define them away) users are no worse off there - people can still source the python script directly as described above: 1) basic usage: asm(R"(.pushsection ".debug_gdb_scripts", "MS", at progbits,1 .byte 1 .asciz "utils/gdb-scripts/support.py" .popsection )"); 2) annoying inline script version: .byte 4 .ascii "llvmSupport.inlined-script\n" .ascii "import gdb.printing\n" .ascii "class SmallStringPrinter:\n" .ascii " \"\"\"Print an llvm::SmallString object.\"\"\"\n&...

...CE1(NUM) \ do { \ asm goto ("0: nop;" \ ".pushsection trace_table;" \ ".long 0b, %l0;" \ ".popsection" \ : : : : trace#NUM); \ if (0) { trace#NUM: trace(); } \ } while (0) #define TRACE TRACE1(__COUNTER__) In this example (which in fact inspired the asm goto feature) we want on rare occasions to call the trace...

Currently the blacklist is maintained by hand in kprobes.c which is separated from the function definition and is hard to catch up the kernel update. To solve this issue, I've tried to implement new NOKPROBE_SYMBOL() macro for making kprobe blacklist at build time. Since the NOKPROBE_SYMBOL() macros can be placed right after the function is defined, it is easy to maintain. At this moment, I

Currently the blacklist is maintained by hand in kprobes.c which is separated from the function definition and is hard to catch up the kernel update. To solve this issue, I've tried to implement new NOKPROBE_SYMBOL() macro for making kprobe blacklist at build time. Since the NOKPROBE_SYMBOL() macros can be placed right after the function is defined, it is easy to maintain. At this moment, I

This changes the pv ops code generation to more closely match reality. For example, instead of: callq *0xffffffff81e3a400 (pv_irq_ops.save_fl) vmlinux will now show: pushfq pop %rax nop nop nop nop nop which is what the runtime version of the code will show in most cases. This idea was suggested by Andy Lutomirski. The benefits are: - For the most common runtime cases

This changes the pv ops code generation to more closely match reality. For example, instead of: callq *0xffffffff81e3a400 (pv_irq_ops.save_fl) vmlinux will now show: pushfq pop %rax nop nop nop nop nop which is what the runtime version of the code will show in most cases. This idea was suggested by Andy Lutomirski. The benefits are: - For the most common runtime cases