* [deller-parisc:5.17-vdso-mini-3 1/1] arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
@ 2022-01-29 2:00 ` kernel test robot
0 siblings, 0 replies; 8+ messages in thread
From: kernel test robot @ 2022-01-29 2:00 UTC (permalink / raw)
To: Helge Deller; +Cc: kbuild-all, linux-kernel
tree: https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git 5.17-vdso-mini-3
head: 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
commit: 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16 [1/1] parisc: Add vDSO support
config: parisc-generic-64bit_defconfig (https://download.01.org/0day-ci/archive/20220129/202201290925.4WPmV6eS-lkp@intel.com/config)
compiler: hppa64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git/commit/?id=8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
git remote add deller-parisc https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git
git fetch --no-tags deller-parisc 5.17-vdso-mini-3
git checkout 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=parisc prepare
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
arch/parisc/kernel/vdso64/Makefile:30: FORCE prerequisite is missing
arch/parisc/kernel/vdso32/sigtramp.S: Assembler messages:
>> arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
>> arch/parisc/kernel/vdso32/sigtramp.S:40: Error: unknown pseudo-op: `.callinfo'
>> arch/parisc/kernel/vdso32/sigtramp.S:41: Error: unknown pseudo-op: `.entry'
>> arch/parisc/kernel/vdso32/sigtramp.S:44: Error: no such instruction: `ldi 0,%r25'
>> arch/parisc/kernel/vdso32/sigtramp.S:45: Error: no such instruction: `ldi 173,%r20'
>> arch/parisc/kernel/vdso32/sigtramp.S:46: Error: no such instruction: `ble 0x100(%sr2,%r0)'
arch/parisc/kernel/vdso32/sigtramp.S:49: Error: no such instruction: `ldi 1,%r25'
arch/parisc/kernel/vdso32/sigtramp.S:50: Error: no such instruction: `ldi 173,%r20'
arch/parisc/kernel/vdso32/sigtramp.S:51: Error: no such instruction: `ble 0x100(%sr2,%r0)'
>> arch/parisc/kernel/vdso32/sigtramp.S:54: Error: unknown pseudo-op: `.exit'
>> arch/parisc/kernel/vdso32/sigtramp.S:55: Error: unknown pseudo-op: `.procend'
>> arch/parisc/kernel/vdso32/sigtramp.S:76: Error: unknown pseudo-op: `.stringz'
make[2]: *** [arch/parisc/kernel/vdso32/Makefile:34: arch/parisc/kernel/vdso32/sigtramp.o] Error 1
arch/parisc/kernel/vdso32/restart_syscall.S: Assembler messages:
>> arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: bad or irreducible absolute expression
>> arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: junk at end of line, first unrecognized character is `:'
>> arch/parisc/kernel/vdso32/restart_syscall.S:26: Error: no such instruction: `ldw 0(%sp),%r31'
>> arch/parisc/kernel/vdso32/restart_syscall.S:29: Error: no such instruction: `be 0x100(%sr2,%r0)'
>> arch/parisc/kernel/vdso32/restart_syscall.S:30: Error: no such instruction: `ldi 0,%r20'
>> arch/parisc/kernel/vdso32/restart_syscall.S:32: Error: .cfi_endproc without corresponding .cfi_startproc
make[2]: *** [arch/parisc/kernel/vdso32/Makefile:34: arch/parisc/kernel/vdso32/restart_syscall.o] Error 1
make[2]: Target 'include/generated/vdso32-offsets.h' not remade because of errors.
make[1]: *** [arch/parisc/Makefile:186: vdso_prepare] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:219: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.
vim +39 arch/parisc/kernel/vdso32/sigtramp.S
12
13 .text
14
15 /* Gdb expects the trampoline is on the stack and the pc is offset from
16 a 64-byte boundary by 0, 4 or 5 instructions. Since the vdso trampoline
17 is not on the stack, we need a new variant with different offsets and
18 data to tell gdb where to find the signal context on the stack.
19
20 Here we put the offset to the context data at the start of the trampoline
21 region and offset the first trampoline by 2 instructions. Please do
22 not change the trampoline as the code in gdb depends on the following
23 instruction sequence exactly.
24 */
25 .align 64
26 .word SIGFRAME_CONTEXT_REGS32
27
28 /* The nop here is a hack. The dwarf2 unwind routines subtract 1 from
29 the return address to get an address in the middle of the presumed
30 call instruction. Since we don't have a call here, we artifically
31 extend the range covered by the unwind info by adding a nop before
32 the real start.
33 */
34 nop
35
36 .globl __kernel_sigtramp_rt
37 .type __kernel_sigtramp_rt, @function
38 __kernel_sigtramp_rt:
> 39 .proc
> 40 .callinfo FRAME=ASM_SIGFRAME_SIZE32,CALLS,SAVE_RP
> 41 .entry
42
43 .Lsigrt_start = . - 4
> 44 0: ldi 0, %r25 /* (in_syscall=0) */
> 45 ldi __NR_rt_sigreturn, %r20
> 46 ble 0x100(%sr2, %r0)
47 nop
48
49 1: ldi 1, %r25 /* (in_syscall=1) */
50 ldi __NR_rt_sigreturn, %r20
51 ble 0x100(%sr2, %r0)
52 nop
53 .Lsigrt_end:
> 54 .exit
> 55 .procend
56 .size __kernel_sigtramp_rt,.-__kernel_sigtramp_rt
57
58
59 .section .eh_frame,"a",@progbits
60
61 /* This is where the mcontext_t struct can be found on the stack. */
62 #define PTREGS SIGFRAME_CONTEXT_REGS32 /* 32-bit process offset is -672 */
63
64 /* Register REGNO can be found at offset OFS of the mcontext_t structure. */
65 .macro rsave regno,ofs
66 .byte 0x05 /* DW_CFA_offset_extended */
67 .uleb128 \regno; /* regno */
68 .uleb128 \ofs /* factored offset */
69 .endm
70
71 .Lcie:
72 .long .Lcie_end - .Lcie_start
73 .Lcie_start:
74 .long 0 /* CIE ID */
75 .byte 1 /* Version number */
> 76 .stringz "zRS" /* NUL-terminated augmentation string */
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
^ permalink raw reply [flat|nested] 8+ messages in thread
* [deller-parisc:5.17-vdso-mini-3 1/1] arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
@ 2022-01-29 2:00 ` kernel test robot
0 siblings, 0 replies; 8+ messages in thread
From: kernel test robot @ 2022-01-29 2:00 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 6284 bytes --]
tree: https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git 5.17-vdso-mini-3
head: 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
commit: 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16 [1/1] parisc: Add vDSO support
config: parisc-generic-64bit_defconfig (https://download.01.org/0day-ci/archive/20220129/202201290925.4WPmV6eS-lkp(a)intel.com/config)
compiler: hppa64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git/commit/?id=8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
git remote add deller-parisc https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git
git fetch --no-tags deller-parisc 5.17-vdso-mini-3
git checkout 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=parisc prepare
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
arch/parisc/kernel/vdso64/Makefile:30: FORCE prerequisite is missing
arch/parisc/kernel/vdso32/sigtramp.S: Assembler messages:
>> arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
>> arch/parisc/kernel/vdso32/sigtramp.S:40: Error: unknown pseudo-op: `.callinfo'
>> arch/parisc/kernel/vdso32/sigtramp.S:41: Error: unknown pseudo-op: `.entry'
>> arch/parisc/kernel/vdso32/sigtramp.S:44: Error: no such instruction: `ldi 0,%r25'
>> arch/parisc/kernel/vdso32/sigtramp.S:45: Error: no such instruction: `ldi 173,%r20'
>> arch/parisc/kernel/vdso32/sigtramp.S:46: Error: no such instruction: `ble 0x100(%sr2,%r0)'
arch/parisc/kernel/vdso32/sigtramp.S:49: Error: no such instruction: `ldi 1,%r25'
arch/parisc/kernel/vdso32/sigtramp.S:50: Error: no such instruction: `ldi 173,%r20'
arch/parisc/kernel/vdso32/sigtramp.S:51: Error: no such instruction: `ble 0x100(%sr2,%r0)'
>> arch/parisc/kernel/vdso32/sigtramp.S:54: Error: unknown pseudo-op: `.exit'
>> arch/parisc/kernel/vdso32/sigtramp.S:55: Error: unknown pseudo-op: `.procend'
>> arch/parisc/kernel/vdso32/sigtramp.S:76: Error: unknown pseudo-op: `.stringz'
make[2]: *** [arch/parisc/kernel/vdso32/Makefile:34: arch/parisc/kernel/vdso32/sigtramp.o] Error 1
arch/parisc/kernel/vdso32/restart_syscall.S: Assembler messages:
>> arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: bad or irreducible absolute expression
>> arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: junk at end of line, first unrecognized character is `:'
>> arch/parisc/kernel/vdso32/restart_syscall.S:26: Error: no such instruction: `ldw 0(%sp),%r31'
>> arch/parisc/kernel/vdso32/restart_syscall.S:29: Error: no such instruction: `be 0x100(%sr2,%r0)'
>> arch/parisc/kernel/vdso32/restart_syscall.S:30: Error: no such instruction: `ldi 0,%r20'
>> arch/parisc/kernel/vdso32/restart_syscall.S:32: Error: .cfi_endproc without corresponding .cfi_startproc
make[2]: *** [arch/parisc/kernel/vdso32/Makefile:34: arch/parisc/kernel/vdso32/restart_syscall.o] Error 1
make[2]: Target 'include/generated/vdso32-offsets.h' not remade because of errors.
make[1]: *** [arch/parisc/Makefile:186: vdso_prepare] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:219: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.
vim +39 arch/parisc/kernel/vdso32/sigtramp.S
12
13 .text
14
15 /* Gdb expects the trampoline is on the stack and the pc is offset from
16 a 64-byte boundary by 0, 4 or 5 instructions. Since the vdso trampoline
17 is not on the stack, we need a new variant with different offsets and
18 data to tell gdb where to find the signal context on the stack.
19
20 Here we put the offset to the context data at the start of the trampoline
21 region and offset the first trampoline by 2 instructions. Please do
22 not change the trampoline as the code in gdb depends on the following
23 instruction sequence exactly.
24 */
25 .align 64
26 .word SIGFRAME_CONTEXT_REGS32
27
28 /* The nop here is a hack. The dwarf2 unwind routines subtract 1 from
29 the return address to get an address in the middle of the presumed
30 call instruction. Since we don't have a call here, we artifically
31 extend the range covered by the unwind info by adding a nop before
32 the real start.
33 */
34 nop
35
36 .globl __kernel_sigtramp_rt
37 .type __kernel_sigtramp_rt, @function
38 __kernel_sigtramp_rt:
> 39 .proc
> 40 .callinfo FRAME=ASM_SIGFRAME_SIZE32,CALLS,SAVE_RP
> 41 .entry
42
43 .Lsigrt_start = . - 4
> 44 0: ldi 0, %r25 /* (in_syscall=0) */
> 45 ldi __NR_rt_sigreturn, %r20
> 46 ble 0x100(%sr2, %r0)
47 nop
48
49 1: ldi 1, %r25 /* (in_syscall=1) */
50 ldi __NR_rt_sigreturn, %r20
51 ble 0x100(%sr2, %r0)
52 nop
53 .Lsigrt_end:
> 54 .exit
> 55 .procend
56 .size __kernel_sigtramp_rt,.-__kernel_sigtramp_rt
57
58
59 .section .eh_frame,"a",@progbits
60
61 /* This is where the mcontext_t struct can be found on the stack. */
62 #define PTREGS SIGFRAME_CONTEXT_REGS32 /* 32-bit process offset is -672 */
63
64 /* Register REGNO can be found at offset OFS of the mcontext_t structure. */
65 .macro rsave regno,ofs
66 .byte 0x05 /* DW_CFA_offset_extended */
67 .uleb128 \regno; /* regno */
68 .uleb128 \ofs /* factored offset */
69 .endm
70
71 .Lcie:
72 .long .Lcie_end - .Lcie_start
73 .Lcie_start:
74 .long 0 /* CIE ID */
75 .byte 1 /* Version number */
> 76 .stringz "zRS" /* NUL-terminated augmentation string */
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [deller-parisc:5.17-vdso-mini-3 1/1] arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
2022-01-29 2:00 ` kernel test robot
@ 2022-01-29 17:50 ` Helge Deller
-1 siblings, 0 replies; 8+ messages in thread
From: Helge Deller @ 2022-01-29 17:50 UTC (permalink / raw)
To: kernel test robot; +Cc: kbuild-all, linux-kernel, John David Anglin
On 1/29/22 03:00, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git 5.17-vdso-mini-3
> head: 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
> commit: 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16 [1/1] parisc: Add vDSO support
> config: parisc-generic-64bit_defconfig (https://download.01.org/0day-ci/archive/20220129/202201290925.4WPmV6eS-lkp@intel.com/config)
> compiler: hppa64-linux-gcc (GCC) 11.2.0
> reproduce (this is a W=1 build):
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git/commit/?id=8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
> git remote add deller-parisc https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git
> git fetch --no-tags deller-parisc 5.17-vdso-mini-3
> git checkout 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
> # save the config file to linux build tree
> mkdir build_dir
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=parisc prepare
I'm somewhat confused by those errors.
There are two changes which happened in the parisc port:
1.) If you want to build a 64bit kernel, you now need "ARCH=parisc64". Before "ARCH=parisc" was sufficient,
but now ARCH=parisc64 builds 64bit kernel, and ARCH=parisc builds the 32bit kernel.
2.) The patch which is being complained about here is, that it adds an initial vDSO, which
includes builds the 64- and 32-bit vDSO in the same build.
So, on a 64bit kernel build (which seems to happen here), the 32-bit gcc-11 compiler needs to be
installed as well in order to be able to build the 32-bit "compat" vDSO.
Maybe the errors here are happening, because the 32bit hppa cross compiler is missing?
Could you please check ?
Helge
> All errors (new ones prefixed by >>):
>
> arch/parisc/kernel/vdso64/Makefile:30: FORCE prerequisite is missing
> arch/parisc/kernel/vdso32/sigtramp.S: Assembler messages:
>>> arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
>>> arch/parisc/kernel/vdso32/sigtramp.S:40: Error: unknown pseudo-op: `.callinfo'
>>> arch/parisc/kernel/vdso32/sigtramp.S:41: Error: unknown pseudo-op: `.entry'
>>> arch/parisc/kernel/vdso32/sigtramp.S:44: Error: no such instruction: `ldi 0,%r25'
>>> arch/parisc/kernel/vdso32/sigtramp.S:45: Error: no such instruction: `ldi 173,%r20'
>>> arch/parisc/kernel/vdso32/sigtramp.S:46: Error: no such instruction: `ble 0x100(%sr2,%r0)'
> arch/parisc/kernel/vdso32/sigtramp.S:49: Error: no such instruction: `ldi 1,%r25'
> arch/parisc/kernel/vdso32/sigtramp.S:50: Error: no such instruction: `ldi 173,%r20'
> arch/parisc/kernel/vdso32/sigtramp.S:51: Error: no such instruction: `ble 0x100(%sr2,%r0)'
>>> arch/parisc/kernel/vdso32/sigtramp.S:54: Error: unknown pseudo-op: `.exit'
>>> arch/parisc/kernel/vdso32/sigtramp.S:55: Error: unknown pseudo-op: `.procend'
>>> arch/parisc/kernel/vdso32/sigtramp.S:76: Error: unknown pseudo-op: `.stringz'
> make[2]: *** [arch/parisc/kernel/vdso32/Makefile:34: arch/parisc/kernel/vdso32/sigtramp.o] Error 1
> arch/parisc/kernel/vdso32/restart_syscall.S: Assembler messages:
>>> arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: bad or irreducible absolute expression
>>> arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: junk at end of line, first unrecognized character is `:'
>>> arch/parisc/kernel/vdso32/restart_syscall.S:26: Error: no such instruction: `ldw 0(%sp),%r31'
>>> arch/parisc/kernel/vdso32/restart_syscall.S:29: Error: no such instruction: `be 0x100(%sr2,%r0)'
>>> arch/parisc/kernel/vdso32/restart_syscall.S:30: Error: no such instruction: `ldi 0,%r20'
>>> arch/parisc/kernel/vdso32/restart_syscall.S:32: Error: .cfi_endproc without corresponding .cfi_startproc
> make[2]: *** [arch/parisc/kernel/vdso32/Makefile:34: arch/parisc/kernel/vdso32/restart_syscall.o] Error 1
> make[2]: Target 'include/generated/vdso32-offsets.h' not remade because of errors.
> make[1]: *** [arch/parisc/Makefile:186: vdso_prepare] Error 2
> make[1]: Target 'prepare' not remade because of errors.
> make: *** [Makefile:219: __sub-make] Error 2
> make: Target 'prepare' not remade because of errors.
>
>
> vim +39 arch/parisc/kernel/vdso32/sigtramp.S
>
> 12
> 13 .text
> 14
> 15 /* Gdb expects the trampoline is on the stack and the pc is offset from
> 16 a 64-byte boundary by 0, 4 or 5 instructions. Since the vdso trampoline
> 17 is not on the stack, we need a new variant with different offsets and
> 18 data to tell gdb where to find the signal context on the stack.
> 19
> 20 Here we put the offset to the context data at the start of the trampoline
> 21 region and offset the first trampoline by 2 instructions. Please do
> 22 not change the trampoline as the code in gdb depends on the following
> 23 instruction sequence exactly.
> 24 */
> 25 .align 64
> 26 .word SIGFRAME_CONTEXT_REGS32
> 27
> 28 /* The nop here is a hack. The dwarf2 unwind routines subtract 1 from
> 29 the return address to get an address in the middle of the presumed
> 30 call instruction. Since we don't have a call here, we artifically
> 31 extend the range covered by the unwind info by adding a nop before
> 32 the real start.
> 33 */
> 34 nop
> 35
> 36 .globl __kernel_sigtramp_rt
> 37 .type __kernel_sigtramp_rt, @function
> 38 __kernel_sigtramp_rt:
> > 39 .proc
> > 40 .callinfo FRAME=ASM_SIGFRAME_SIZE32,CALLS,SAVE_RP
> > 41 .entry
> 42
> 43 .Lsigrt_start = . - 4
> > 44 0: ldi 0, %r25 /* (in_syscall=0) */
> > 45 ldi __NR_rt_sigreturn, %r20
> > 46 ble 0x100(%sr2, %r0)
> 47 nop
> 48
> 49 1: ldi 1, %r25 /* (in_syscall=1) */
> 50 ldi __NR_rt_sigreturn, %r20
> 51 ble 0x100(%sr2, %r0)
> 52 nop
> 53 .Lsigrt_end:
> > 54 .exit
> > 55 .procend
> 56 .size __kernel_sigtramp_rt,.-__kernel_sigtramp_rt
> 57
> 58
> 59 .section .eh_frame,"a",@progbits
> 60
> 61 /* This is where the mcontext_t struct can be found on the stack. */
> 62 #define PTREGS SIGFRAME_CONTEXT_REGS32 /* 32-bit process offset is -672 */
> 63
> 64 /* Register REGNO can be found at offset OFS of the mcontext_t structure. */
> 65 .macro rsave regno,ofs
> 66 .byte 0x05 /* DW_CFA_offset_extended */
> 67 .uleb128 \regno; /* regno */
> 68 .uleb128 \ofs /* factored offset */
> 69 .endm
> 70
> 71 .Lcie:
> 72 .long .Lcie_end - .Lcie_start
> 73 .Lcie_start:
> 74 .long 0 /* CIE ID */
> 75 .byte 1 /* Version number */
> > 76 .stringz "zRS" /* NUL-terminated augmentation string */
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [deller-parisc:5.17-vdso-mini-3 1/1] arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
@ 2022-01-29 17:50 ` Helge Deller
0 siblings, 0 replies; 8+ messages in thread
From: Helge Deller @ 2022-01-29 17:50 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 7043 bytes --]
On 1/29/22 03:00, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git 5.17-vdso-mini-3
> head: 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
> commit: 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16 [1/1] parisc: Add vDSO support
> config: parisc-generic-64bit_defconfig (https://download.01.org/0day-ci/archive/20220129/202201290925.4WPmV6eS-lkp(a)intel.com/config)
> compiler: hppa64-linux-gcc (GCC) 11.2.0
> reproduce (this is a W=1 build):
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git/commit/?id=8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
> git remote add deller-parisc https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git
> git fetch --no-tags deller-parisc 5.17-vdso-mini-3
> git checkout 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
> # save the config file to linux build tree
> mkdir build_dir
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=parisc prepare
I'm somewhat confused by those errors.
There are two changes which happened in the parisc port:
1.) If you want to build a 64bit kernel, you now need "ARCH=parisc64". Before "ARCH=parisc" was sufficient,
but now ARCH=parisc64 builds 64bit kernel, and ARCH=parisc builds the 32bit kernel.
2.) The patch which is being complained about here is, that it adds an initial vDSO, which
includes builds the 64- and 32-bit vDSO in the same build.
So, on a 64bit kernel build (which seems to happen here), the 32-bit gcc-11 compiler needs to be
installed as well in order to be able to build the 32-bit "compat" vDSO.
Maybe the errors here are happening, because the 32bit hppa cross compiler is missing?
Could you please check ?
Helge
> All errors (new ones prefixed by >>):
>
> arch/parisc/kernel/vdso64/Makefile:30: FORCE prerequisite is missing
> arch/parisc/kernel/vdso32/sigtramp.S: Assembler messages:
>>> arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
>>> arch/parisc/kernel/vdso32/sigtramp.S:40: Error: unknown pseudo-op: `.callinfo'
>>> arch/parisc/kernel/vdso32/sigtramp.S:41: Error: unknown pseudo-op: `.entry'
>>> arch/parisc/kernel/vdso32/sigtramp.S:44: Error: no such instruction: `ldi 0,%r25'
>>> arch/parisc/kernel/vdso32/sigtramp.S:45: Error: no such instruction: `ldi 173,%r20'
>>> arch/parisc/kernel/vdso32/sigtramp.S:46: Error: no such instruction: `ble 0x100(%sr2,%r0)'
> arch/parisc/kernel/vdso32/sigtramp.S:49: Error: no such instruction: `ldi 1,%r25'
> arch/parisc/kernel/vdso32/sigtramp.S:50: Error: no such instruction: `ldi 173,%r20'
> arch/parisc/kernel/vdso32/sigtramp.S:51: Error: no such instruction: `ble 0x100(%sr2,%r0)'
>>> arch/parisc/kernel/vdso32/sigtramp.S:54: Error: unknown pseudo-op: `.exit'
>>> arch/parisc/kernel/vdso32/sigtramp.S:55: Error: unknown pseudo-op: `.procend'
>>> arch/parisc/kernel/vdso32/sigtramp.S:76: Error: unknown pseudo-op: `.stringz'
> make[2]: *** [arch/parisc/kernel/vdso32/Makefile:34: arch/parisc/kernel/vdso32/sigtramp.o] Error 1
> arch/parisc/kernel/vdso32/restart_syscall.S: Assembler messages:
>>> arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: bad or irreducible absolute expression
>>> arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: junk at end of line, first unrecognized character is `:'
>>> arch/parisc/kernel/vdso32/restart_syscall.S:26: Error: no such instruction: `ldw 0(%sp),%r31'
>>> arch/parisc/kernel/vdso32/restart_syscall.S:29: Error: no such instruction: `be 0x100(%sr2,%r0)'
>>> arch/parisc/kernel/vdso32/restart_syscall.S:30: Error: no such instruction: `ldi 0,%r20'
>>> arch/parisc/kernel/vdso32/restart_syscall.S:32: Error: .cfi_endproc without corresponding .cfi_startproc
> make[2]: *** [arch/parisc/kernel/vdso32/Makefile:34: arch/parisc/kernel/vdso32/restart_syscall.o] Error 1
> make[2]: Target 'include/generated/vdso32-offsets.h' not remade because of errors.
> make[1]: *** [arch/parisc/Makefile:186: vdso_prepare] Error 2
> make[1]: Target 'prepare' not remade because of errors.
> make: *** [Makefile:219: __sub-make] Error 2
> make: Target 'prepare' not remade because of errors.
>
>
> vim +39 arch/parisc/kernel/vdso32/sigtramp.S
>
> 12
> 13 .text
> 14
> 15 /* Gdb expects the trampoline is on the stack and the pc is offset from
> 16 a 64-byte boundary by 0, 4 or 5 instructions. Since the vdso trampoline
> 17 is not on the stack, we need a new variant with different offsets and
> 18 data to tell gdb where to find the signal context on the stack.
> 19
> 20 Here we put the offset to the context data at the start of the trampoline
> 21 region and offset the first trampoline by 2 instructions. Please do
> 22 not change the trampoline as the code in gdb depends on the following
> 23 instruction sequence exactly.
> 24 */
> 25 .align 64
> 26 .word SIGFRAME_CONTEXT_REGS32
> 27
> 28 /* The nop here is a hack. The dwarf2 unwind routines subtract 1 from
> 29 the return address to get an address in the middle of the presumed
> 30 call instruction. Since we don't have a call here, we artifically
> 31 extend the range covered by the unwind info by adding a nop before
> 32 the real start.
> 33 */
> 34 nop
> 35
> 36 .globl __kernel_sigtramp_rt
> 37 .type __kernel_sigtramp_rt, @function
> 38 __kernel_sigtramp_rt:
> > 39 .proc
> > 40 .callinfo FRAME=ASM_SIGFRAME_SIZE32,CALLS,SAVE_RP
> > 41 .entry
> 42
> 43 .Lsigrt_start = . - 4
> > 44 0: ldi 0, %r25 /* (in_syscall=0) */
> > 45 ldi __NR_rt_sigreturn, %r20
> > 46 ble 0x100(%sr2, %r0)
> 47 nop
> 48
> 49 1: ldi 1, %r25 /* (in_syscall=1) */
> 50 ldi __NR_rt_sigreturn, %r20
> 51 ble 0x100(%sr2, %r0)
> 52 nop
> 53 .Lsigrt_end:
> > 54 .exit
> > 55 .procend
> 56 .size __kernel_sigtramp_rt,.-__kernel_sigtramp_rt
> 57
> 58
> 59 .section .eh_frame,"a",@progbits
> 60
> 61 /* This is where the mcontext_t struct can be found on the stack. */
> 62 #define PTREGS SIGFRAME_CONTEXT_REGS32 /* 32-bit process offset is -672 */
> 63
> 64 /* Register REGNO can be found at offset OFS of the mcontext_t structure. */
> 65 .macro rsave regno,ofs
> 66 .byte 0x05 /* DW_CFA_offset_extended */
> 67 .uleb128 \regno; /* regno */
> 68 .uleb128 \ofs /* factored offset */
> 69 .endm
> 70
> 71 .Lcie:
> 72 .long .Lcie_end - .Lcie_start
> 73 .Lcie_start:
> 74 .long 0 /* CIE ID */
> 75 .byte 1 /* Version number */
> > 76 .stringz "zRS" /* NUL-terminated augmentation string */
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [kbuild-all] Re: [deller-parisc:5.17-vdso-mini-3 1/1] arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
2022-01-29 17:50 ` Helge Deller
@ 2022-01-30 6:53 ` Chen, Rong A
-1 siblings, 0 replies; 8+ messages in thread
From: Chen, Rong A @ 2022-01-30 6:53 UTC (permalink / raw)
To: Helge Deller, kernel test robot
Cc: kbuild-all, linux-kernel, John David Anglin
On 1/30/2022 1:50 AM, Helge Deller wrote:
> On 1/29/22 03:00, kernel test robot wrote:
>> tree: https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git 5.17-vdso-mini-3
>> head: 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
>> commit: 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16 [1/1] parisc: Add vDSO support
>> config: parisc-generic-64bit_defconfig (https://download.01.org/0day-ci/archive/20220129/202201290925.4WPmV6eS-lkp@intel.com/config)
>> compiler: hppa64-linux-gcc (GCC) 11.2.0
>> reproduce (this is a W=1 build):
>> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>> chmod +x ~/bin/make.cross
>> # https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git/commit/?id=8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
>> git remote add deller-parisc https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git
>> git fetch --no-tags deller-parisc 5.17-vdso-mini-3
>> git checkout 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
>> # save the config file to linux build tree
>> mkdir build_dir
>> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=parisc prepare
>
> I'm somewhat confused by those errors.
>
> There are two changes which happened in the parisc port:
>
> 1.) If you want to build a 64bit kernel, you now need "ARCH=parisc64". Before "ARCH=parisc" was sufficient,
> but now ARCH=parisc64 builds 64bit kernel, and ARCH=parisc builds the 32bit kernel.
Hi Helge,
Thanks for the explanation, we'll update to use ARCH=parisc64 for 64bit
kernel.
>
> 2.) The patch which is being complained about here is, that it adds an initial vDSO, which
> includes builds the 64- and 32-bit vDSO in the same build.
> So, on a 64bit kernel build (which seems to happen here), the 32-bit gcc-11 compiler needs to be
> installed as well in order to be able to build the 32-bit "compat" vDSO.
> Maybe the errors here are happening, because the 32bit hppa cross compiler is missing?
I tried the below command, the error still exists, is there anything wrong?
$make W=1 --keep-going CROSS_COMPILE=hppa64-linux- -j32 O=./build_dir
ARCH=parisc64 prepare
...
Assembler messages:
../arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op:
`.proc'
../arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: bad or
irreducible absolute expression
../arch/parisc/kernel/vdso32/sigtramp.S:40: Error: unknown pseudo-op:
`.callinfo'
../arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: junk at end of
line, first unrecognized character is `:'
../arch/parisc/kernel/vdso32/sigtramp.S:41: Error: unknown pseudo-op:
`.entry'
../arch/parisc/kernel/vdso32/restart_syscall.S:26: Error: no such
instruction: `ldw 0(%sp),%r31'
../arch/parisc/kernel/vdso32/restart_syscall.S:29: Error: no such
instruction: `be 0x100(%sr2,%r0)'
../arch/parisc/kernel/vdso32/sigtramp.S:44: Error: no such instruction:
`ldi 0,%r25'
../arch/parisc/kernel/vdso32/restart_syscall.S:30: Error: no such
instruction: `ldi 0,%r20'
Best Regards,
Rong Chen
>
> Could you please check ?
>
> Helge
>
>
>> All errors (new ones prefixed by >>):
>>
>> arch/parisc/kernel/vdso64/Makefile:30: FORCE prerequisite is missing
>> arch/parisc/kernel/vdso32/sigtramp.S: Assembler messages:
>>>> arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
>>>> arch/parisc/kernel/vdso32/sigtramp.S:40: Error: unknown pseudo-op: `.callinfo'
>>>> arch/parisc/kernel/vdso32/sigtramp.S:41: Error: unknown pseudo-op: `.entry'
>>>> arch/parisc/kernel/vdso32/sigtramp.S:44: Error: no such instruction: `ldi 0,%r25'
>>>> arch/parisc/kernel/vdso32/sigtramp.S:45: Error: no such instruction: `ldi 173,%r20'
>>>> arch/parisc/kernel/vdso32/sigtramp.S:46: Error: no such instruction: `ble 0x100(%sr2,%r0)'
>> arch/parisc/kernel/vdso32/sigtramp.S:49: Error: no such instruction: `ldi 1,%r25'
>> arch/parisc/kernel/vdso32/sigtramp.S:50: Error: no such instruction: `ldi 173,%r20'
>> arch/parisc/kernel/vdso32/sigtramp.S:51: Error: no such instruction: `ble 0x100(%sr2,%r0)'
>>>> arch/parisc/kernel/vdso32/sigtramp.S:54: Error: unknown pseudo-op: `.exit'
>>>> arch/parisc/kernel/vdso32/sigtramp.S:55: Error: unknown pseudo-op: `.procend'
>>>> arch/parisc/kernel/vdso32/sigtramp.S:76: Error: unknown pseudo-op: `.stringz'
>> make[2]: *** [arch/parisc/kernel/vdso32/Makefile:34: arch/parisc/kernel/vdso32/sigtramp.o] Error 1
>> arch/parisc/kernel/vdso32/restart_syscall.S: Assembler messages:
>>>> arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: bad or irreducible absolute expression
>>>> arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: junk at end of line, first unrecognized character is `:'
>>>> arch/parisc/kernel/vdso32/restart_syscall.S:26: Error: no such instruction: `ldw 0(%sp),%r31'
>>>> arch/parisc/kernel/vdso32/restart_syscall.S:29: Error: no such instruction: `be 0x100(%sr2,%r0)'
>>>> arch/parisc/kernel/vdso32/restart_syscall.S:30: Error: no such instruction: `ldi 0,%r20'
>>>> arch/parisc/kernel/vdso32/restart_syscall.S:32: Error: .cfi_endproc without corresponding .cfi_startproc
>> make[2]: *** [arch/parisc/kernel/vdso32/Makefile:34: arch/parisc/kernel/vdso32/restart_syscall.o] Error 1
>> make[2]: Target 'include/generated/vdso32-offsets.h' not remade because of errors.
>> make[1]: *** [arch/parisc/Makefile:186: vdso_prepare] Error 2
>> make[1]: Target 'prepare' not remade because of errors.
>> make: *** [Makefile:219: __sub-make] Error 2
>> make: Target 'prepare' not remade because of errors.
>>
>>
>> vim +39 arch/parisc/kernel/vdso32/sigtramp.S
>>
>> 12
>> 13 .text
>> 14
>> 15 /* Gdb expects the trampoline is on the stack and the pc is offset from
>> 16 a 64-byte boundary by 0, 4 or 5 instructions. Since the vdso trampoline
>> 17 is not on the stack, we need a new variant with different offsets and
>> 18 data to tell gdb where to find the signal context on the stack.
>> 19
>> 20 Here we put the offset to the context data at the start of the trampoline
>> 21 region and offset the first trampoline by 2 instructions. Please do
>> 22 not change the trampoline as the code in gdb depends on the following
>> 23 instruction sequence exactly.
>> 24 */
>> 25 .align 64
>> 26 .word SIGFRAME_CONTEXT_REGS32
>> 27
>> 28 /* The nop here is a hack. The dwarf2 unwind routines subtract 1 from
>> 29 the return address to get an address in the middle of the presumed
>> 30 call instruction. Since we don't have a call here, we artifically
>> 31 extend the range covered by the unwind info by adding a nop before
>> 32 the real start.
>> 33 */
>> 34 nop
>> 35
>> 36 .globl __kernel_sigtramp_rt
>> 37 .type __kernel_sigtramp_rt, @function
>> 38 __kernel_sigtramp_rt:
>> > 39 .proc
>> > 40 .callinfo FRAME=ASM_SIGFRAME_SIZE32,CALLS,SAVE_RP
>> > 41 .entry
>> 42
>> 43 .Lsigrt_start = . - 4
>> > 44 0: ldi 0, %r25 /* (in_syscall=0) */
>> > 45 ldi __NR_rt_sigreturn, %r20
>> > 46 ble 0x100(%sr2, %r0)
>> 47 nop
>> 48
>> 49 1: ldi 1, %r25 /* (in_syscall=1) */
>> 50 ldi __NR_rt_sigreturn, %r20
>> 51 ble 0x100(%sr2, %r0)
>> 52 nop
>> 53 .Lsigrt_end:
>> > 54 .exit
>> > 55 .procend
>> 56 .size __kernel_sigtramp_rt,.-__kernel_sigtramp_rt
>> 57
>> 58
>> 59 .section .eh_frame,"a",@progbits
>> 60
>> 61 /* This is where the mcontext_t struct can be found on the stack. */
>> 62 #define PTREGS SIGFRAME_CONTEXT_REGS32 /* 32-bit process offset is -672 */
>> 63
>> 64 /* Register REGNO can be found at offset OFS of the mcontext_t structure. */
>> 65 .macro rsave regno,ofs
>> 66 .byte 0x05 /* DW_CFA_offset_extended */
>> 67 .uleb128 \regno; /* regno */
>> 68 .uleb128 \ofs /* factored offset */
>> 69 .endm
>> 70
>> 71 .Lcie:
>> 72 .long .Lcie_end - .Lcie_start
>> 73 .Lcie_start:
>> 74 .long 0 /* CIE ID */
>> 75 .byte 1 /* Version number */
>> > 76 .stringz "zRS" /* NUL-terminated augmentation string */
> _______________________________________________
> kbuild-all mailing list -- kbuild-all@lists.01.org
> To unsubscribe send an email to kbuild-all-leave@lists.01.org
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [deller-parisc:5.17-vdso-mini-3 1/1] arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
@ 2022-01-30 6:53 ` Chen, Rong A
0 siblings, 0 replies; 8+ messages in thread
From: Chen, Rong A @ 2022-01-30 6:53 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 8693 bytes --]
On 1/30/2022 1:50 AM, Helge Deller wrote:
> On 1/29/22 03:00, kernel test robot wrote:
>> tree: https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git 5.17-vdso-mini-3
>> head: 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
>> commit: 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16 [1/1] parisc: Add vDSO support
>> config: parisc-generic-64bit_defconfig (https://download.01.org/0day-ci/archive/20220129/202201290925.4WPmV6eS-lkp(a)intel.com/config)
>> compiler: hppa64-linux-gcc (GCC) 11.2.0
>> reproduce (this is a W=1 build):
>> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>> chmod +x ~/bin/make.cross
>> # https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git/commit/?id=8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
>> git remote add deller-parisc https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git
>> git fetch --no-tags deller-parisc 5.17-vdso-mini-3
>> git checkout 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
>> # save the config file to linux build tree
>> mkdir build_dir
>> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=parisc prepare
>
> I'm somewhat confused by those errors.
>
> There are two changes which happened in the parisc port:
>
> 1.) If you want to build a 64bit kernel, you now need "ARCH=parisc64". Before "ARCH=parisc" was sufficient,
> but now ARCH=parisc64 builds 64bit kernel, and ARCH=parisc builds the 32bit kernel.
Hi Helge,
Thanks for the explanation, we'll update to use ARCH=parisc64 for 64bit
kernel.
>
> 2.) The patch which is being complained about here is, that it adds an initial vDSO, which
> includes builds the 64- and 32-bit vDSO in the same build.
> So, on a 64bit kernel build (which seems to happen here), the 32-bit gcc-11 compiler needs to be
> installed as well in order to be able to build the 32-bit "compat" vDSO.
> Maybe the errors here are happening, because the 32bit hppa cross compiler is missing?
I tried the below command, the error still exists, is there anything wrong?
$make W=1 --keep-going CROSS_COMPILE=hppa64-linux- -j32 O=./build_dir
ARCH=parisc64 prepare
...
Assembler messages:
../arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op:
`.proc'
../arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: bad or
irreducible absolute expression
../arch/parisc/kernel/vdso32/sigtramp.S:40: Error: unknown pseudo-op:
`.callinfo'
../arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: junk at end of
line, first unrecognized character is `:'
../arch/parisc/kernel/vdso32/sigtramp.S:41: Error: unknown pseudo-op:
`.entry'
../arch/parisc/kernel/vdso32/restart_syscall.S:26: Error: no such
instruction: `ldw 0(%sp),%r31'
../arch/parisc/kernel/vdso32/restart_syscall.S:29: Error: no such
instruction: `be 0x100(%sr2,%r0)'
../arch/parisc/kernel/vdso32/sigtramp.S:44: Error: no such instruction:
`ldi 0,%r25'
../arch/parisc/kernel/vdso32/restart_syscall.S:30: Error: no such
instruction: `ldi 0,%r20'
Best Regards,
Rong Chen
>
> Could you please check ?
>
> Helge
>
>
>> All errors (new ones prefixed by >>):
>>
>> arch/parisc/kernel/vdso64/Makefile:30: FORCE prerequisite is missing
>> arch/parisc/kernel/vdso32/sigtramp.S: Assembler messages:
>>>> arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
>>>> arch/parisc/kernel/vdso32/sigtramp.S:40: Error: unknown pseudo-op: `.callinfo'
>>>> arch/parisc/kernel/vdso32/sigtramp.S:41: Error: unknown pseudo-op: `.entry'
>>>> arch/parisc/kernel/vdso32/sigtramp.S:44: Error: no such instruction: `ldi 0,%r25'
>>>> arch/parisc/kernel/vdso32/sigtramp.S:45: Error: no such instruction: `ldi 173,%r20'
>>>> arch/parisc/kernel/vdso32/sigtramp.S:46: Error: no such instruction: `ble 0x100(%sr2,%r0)'
>> arch/parisc/kernel/vdso32/sigtramp.S:49: Error: no such instruction: `ldi 1,%r25'
>> arch/parisc/kernel/vdso32/sigtramp.S:50: Error: no such instruction: `ldi 173,%r20'
>> arch/parisc/kernel/vdso32/sigtramp.S:51: Error: no such instruction: `ble 0x100(%sr2,%r0)'
>>>> arch/parisc/kernel/vdso32/sigtramp.S:54: Error: unknown pseudo-op: `.exit'
>>>> arch/parisc/kernel/vdso32/sigtramp.S:55: Error: unknown pseudo-op: `.procend'
>>>> arch/parisc/kernel/vdso32/sigtramp.S:76: Error: unknown pseudo-op: `.stringz'
>> make[2]: *** [arch/parisc/kernel/vdso32/Makefile:34: arch/parisc/kernel/vdso32/sigtramp.o] Error 1
>> arch/parisc/kernel/vdso32/restart_syscall.S: Assembler messages:
>>>> arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: bad or irreducible absolute expression
>>>> arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: junk at end of line, first unrecognized character is `:'
>>>> arch/parisc/kernel/vdso32/restart_syscall.S:26: Error: no such instruction: `ldw 0(%sp),%r31'
>>>> arch/parisc/kernel/vdso32/restart_syscall.S:29: Error: no such instruction: `be 0x100(%sr2,%r0)'
>>>> arch/parisc/kernel/vdso32/restart_syscall.S:30: Error: no such instruction: `ldi 0,%r20'
>>>> arch/parisc/kernel/vdso32/restart_syscall.S:32: Error: .cfi_endproc without corresponding .cfi_startproc
>> make[2]: *** [arch/parisc/kernel/vdso32/Makefile:34: arch/parisc/kernel/vdso32/restart_syscall.o] Error 1
>> make[2]: Target 'include/generated/vdso32-offsets.h' not remade because of errors.
>> make[1]: *** [arch/parisc/Makefile:186: vdso_prepare] Error 2
>> make[1]: Target 'prepare' not remade because of errors.
>> make: *** [Makefile:219: __sub-make] Error 2
>> make: Target 'prepare' not remade because of errors.
>>
>>
>> vim +39 arch/parisc/kernel/vdso32/sigtramp.S
>>
>> 12
>> 13 .text
>> 14
>> 15 /* Gdb expects the trampoline is on the stack and the pc is offset from
>> 16 a 64-byte boundary by 0, 4 or 5 instructions. Since the vdso trampoline
>> 17 is not on the stack, we need a new variant with different offsets and
>> 18 data to tell gdb where to find the signal context on the stack.
>> 19
>> 20 Here we put the offset to the context data at the start of the trampoline
>> 21 region and offset the first trampoline by 2 instructions. Please do
>> 22 not change the trampoline as the code in gdb depends on the following
>> 23 instruction sequence exactly.
>> 24 */
>> 25 .align 64
>> 26 .word SIGFRAME_CONTEXT_REGS32
>> 27
>> 28 /* The nop here is a hack. The dwarf2 unwind routines subtract 1 from
>> 29 the return address to get an address in the middle of the presumed
>> 30 call instruction. Since we don't have a call here, we artifically
>> 31 extend the range covered by the unwind info by adding a nop before
>> 32 the real start.
>> 33 */
>> 34 nop
>> 35
>> 36 .globl __kernel_sigtramp_rt
>> 37 .type __kernel_sigtramp_rt, @function
>> 38 __kernel_sigtramp_rt:
>> > 39 .proc
>> > 40 .callinfo FRAME=ASM_SIGFRAME_SIZE32,CALLS,SAVE_RP
>> > 41 .entry
>> 42
>> 43 .Lsigrt_start = . - 4
>> > 44 0: ldi 0, %r25 /* (in_syscall=0) */
>> > 45 ldi __NR_rt_sigreturn, %r20
>> > 46 ble 0x100(%sr2, %r0)
>> 47 nop
>> 48
>> 49 1: ldi 1, %r25 /* (in_syscall=1) */
>> 50 ldi __NR_rt_sigreturn, %r20
>> 51 ble 0x100(%sr2, %r0)
>> 52 nop
>> 53 .Lsigrt_end:
>> > 54 .exit
>> > 55 .procend
>> 56 .size __kernel_sigtramp_rt,.-__kernel_sigtramp_rt
>> 57
>> 58
>> 59 .section .eh_frame,"a",@progbits
>> 60
>> 61 /* This is where the mcontext_t struct can be found on the stack. */
>> 62 #define PTREGS SIGFRAME_CONTEXT_REGS32 /* 32-bit process offset is -672 */
>> 63
>> 64 /* Register REGNO can be found at offset OFS of the mcontext_t structure. */
>> 65 .macro rsave regno,ofs
>> 66 .byte 0x05 /* DW_CFA_offset_extended */
>> 67 .uleb128 \regno; /* regno */
>> 68 .uleb128 \ofs /* factored offset */
>> 69 .endm
>> 70
>> 71 .Lcie:
>> 72 .long .Lcie_end - .Lcie_start
>> 73 .Lcie_start:
>> 74 .long 0 /* CIE ID */
>> 75 .byte 1 /* Version number */
>> > 76 .stringz "zRS" /* NUL-terminated augmentation string */
> _______________________________________________
> kbuild-all mailing list -- kbuild-all(a)lists.01.org
> To unsubscribe send an email to kbuild-all-leave(a)lists.01.org
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [kbuild-all] Re: [deller-parisc:5.17-vdso-mini-3 1/1] arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
2022-01-30 6:53 ` Chen, Rong A
@ 2022-01-30 10:47 ` Helge Deller
-1 siblings, 0 replies; 8+ messages in thread
From: Helge Deller @ 2022-01-30 10:47 UTC (permalink / raw)
To: Chen, Rong A, kernel test robot
Cc: kbuild-all, linux-kernel, John David Anglin
Hello Rong Chen,
On 1/30/22 07:53, Chen, Rong A wrote:
> On 1/30/2022 1:50 AM, Helge Deller wrote:
>> On 1/29/22 03:00, kernel test robot wrote:
>>> tree: https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git 5.17-vdso-mini-3
>>> head: 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
>>> commit: 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16 [1/1] parisc: Add vDSO support
>>> config: parisc-generic-64bit_defconfig (https://download.01.org/0day-ci/archive/20220129/202201290925.4WPmV6eS-lkp@intel.com/config)
>>> compiler: hppa64-linux-gcc (GCC) 11.2.0
>>> reproduce (this is a W=1 build):
>>> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>>> chmod +x ~/bin/make.cross
>>> # https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git/commit/?id=8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
>>> git remote add deller-parisc https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git
>>> git fetch --no-tags deller-parisc 5.17-vdso-mini-3
>>> git checkout 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
>>> # save the config file to linux build tree
>>> mkdir build_dir
>>> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=parisc prepare
>>
>> I'm somewhat confused by those errors.
>>
>> There are two changes which happened in the parisc port:
>>
>> 1.) If you want to build a 64bit kernel, you now need "ARCH=parisc64". Before "ARCH=parisc" was sufficient,
>> but now ARCH=parisc64 builds 64bit kernel, and ARCH=parisc builds the 32bit kernel.
>
> Hi Helge,
>
> Thanks for the explanation, we'll update to use ARCH=parisc64 for 64bit kernel.
>
>>
>> 2.) The patch which is being complained about here is, that it adds an initial vDSO, which
>> includes builds the 64- and 32-bit vDSO in the same build.
>> So, on a 64bit kernel build (which seems to happen here), the 32-bit gcc-11 compiler needs to be
>> installed as well in order to be able to build the 32-bit "compat" vDSO.
>> Maybe the errors here are happening, because the 32bit hppa cross compiler is missing?
>
> I tried the below command, the error still exists, is there anything wrong?
>
> $make W=1 --keep-going CROSS_COMPILE=hppa64-linux- -j32 O=./build_dir ARCH=parisc64 prepare
Please drop the "CROSS_COMPILE=hppa64-linux-" part.
It will autodetect the cross compiler, so this is sufficient:
make W=1 --keep-going -j32 O=./build_dir ARCH=parisc64 prepare
Helge
> ...
> Assembler messages:
> ../arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
> ../arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: bad or irreducible absolute expression
> ../arch/parisc/kernel/vdso32/sigtramp.S:40: Error: unknown pseudo-op: `.callinfo'
> ../arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: junk at end of line, first unrecognized character is `:'
> ../arch/parisc/kernel/vdso32/sigtramp.S:41: Error: unknown pseudo-op: `.entry'
> ../arch/parisc/kernel/vdso32/restart_syscall.S:26: Error: no such instruction: `ldw 0(%sp),%r31'
> ../arch/parisc/kernel/vdso32/restart_syscall.S:29: Error: no such instruction: `be 0x100(%sr2,%r0)'
> ../arch/parisc/kernel/vdso32/sigtramp.S:44: Error: no such instruction: `ldi 0,%r25'
> ../arch/parisc/kernel/vdso32/restart_syscall.S:30: Error: no such instruction: `ldi 0,%r20'
>
> Best Regards,
> Rong Chen
>
>>
>> Could you please check ?
>>
>> Helge
>>
>>
>>> All errors (new ones prefixed by >>):
>>>
>>> arch/parisc/kernel/vdso64/Makefile:30: FORCE prerequisite is missing
>>> arch/parisc/kernel/vdso32/sigtramp.S: Assembler messages:
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:40: Error: unknown pseudo-op: `.callinfo'
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:41: Error: unknown pseudo-op: `.entry'
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:44: Error: no such instruction: `ldi 0,%r25'
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:45: Error: no such instruction: `ldi 173,%r20'
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:46: Error: no such instruction: `ble 0x100(%sr2,%r0)'
>>> arch/parisc/kernel/vdso32/sigtramp.S:49: Error: no such instruction: `ldi 1,%r25'
>>> arch/parisc/kernel/vdso32/sigtramp.S:50: Error: no such instruction: `ldi 173,%r20'
>>> arch/parisc/kernel/vdso32/sigtramp.S:51: Error: no such instruction: `ble 0x100(%sr2,%r0)'
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:54: Error: unknown pseudo-op: `.exit'
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:55: Error: unknown pseudo-op: `.procend'
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:76: Error: unknown pseudo-op: `.stringz'
>>> make[2]: *** [arch/parisc/kernel/vdso32/Makefile:34: arch/parisc/kernel/vdso32/sigtramp.o] Error 1
>>> arch/parisc/kernel/vdso32/restart_syscall.S: Assembler messages:
>>>>> arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: bad or irreducible absolute expression
>>>>> arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: junk at end of line, first unrecognized character is `:'
>>>>> arch/parisc/kernel/vdso32/restart_syscall.S:26: Error: no such instruction: `ldw 0(%sp),%r31'
>>>>> arch/parisc/kernel/vdso32/restart_syscall.S:29: Error: no such instruction: `be 0x100(%sr2,%r0)'
>>>>> arch/parisc/kernel/vdso32/restart_syscall.S:30: Error: no such instruction: `ldi 0,%r20'
>>>>> arch/parisc/kernel/vdso32/restart_syscall.S:32: Error: .cfi_endproc without corresponding .cfi_startproc
>>> make[2]: *** [arch/parisc/kernel/vdso32/Makefile:34: arch/parisc/kernel/vdso32/restart_syscall.o] Error 1
>>> make[2]: Target 'include/generated/vdso32-offsets.h' not remade because of errors.
>>> make[1]: *** [arch/parisc/Makefile:186: vdso_prepare] Error 2
>>> make[1]: Target 'prepare' not remade because of errors.
>>> make: *** [Makefile:219: __sub-make] Error 2
>>> make: Target 'prepare' not remade because of errors.
>>>
>>>
>>> vim +39 arch/parisc/kernel/vdso32/sigtramp.S
>>>
>>> 12
>>> 13 .text
>>> 14
>>> 15 /* Gdb expects the trampoline is on the stack and the pc is offset from
>>> 16 a 64-byte boundary by 0, 4 or 5 instructions. Since the vdso trampoline
>>> 17 is not on the stack, we need a new variant with different offsets and
>>> 18 data to tell gdb where to find the signal context on the stack.
>>> 19
>>> 20 Here we put the offset to the context data at the start of the trampoline
>>> 21 region and offset the first trampoline by 2 instructions. Please do
>>> 22 not change the trampoline as the code in gdb depends on the following
>>> 23 instruction sequence exactly.
>>> 24 */
>>> 25 .align 64
>>> 26 .word SIGFRAME_CONTEXT_REGS32
>>> 27
>>> 28 /* The nop here is a hack. The dwarf2 unwind routines subtract 1 from
>>> 29 the return address to get an address in the middle of the presumed
>>> 30 call instruction. Since we don't have a call here, we artifically
>>> 31 extend the range covered by the unwind info by adding a nop before
>>> 32 the real start.
>>> 33 */
>>> 34 nop
>>> 35
>>> 36 .globl __kernel_sigtramp_rt
>>> 37 .type __kernel_sigtramp_rt, @function
>>> 38 __kernel_sigtramp_rt:
>>> > 39 .proc
>>> > 40 .callinfo FRAME=ASM_SIGFRAME_SIZE32,CALLS,SAVE_RP
>>> > 41 .entry
>>> 42
>>> 43 .Lsigrt_start = . - 4
>>> > 44 0: ldi 0, %r25 /* (in_syscall=0) */
>>> > 45 ldi __NR_rt_sigreturn, %r20
>>> > 46 ble 0x100(%sr2, %r0)
>>> 47 nop
>>> 48
>>> 49 1: ldi 1, %r25 /* (in_syscall=1) */
>>> 50 ldi __NR_rt_sigreturn, %r20
>>> 51 ble 0x100(%sr2, %r0)
>>> 52 nop
>>> 53 .Lsigrt_end:
>>> > 54 .exit
>>> > 55 .procend
>>> 56 .size __kernel_sigtramp_rt,.-__kernel_sigtramp_rt
>>> 57
>>> 58
>>> 59 .section .eh_frame,"a",@progbits
>>> 60
>>> 61 /* This is where the mcontext_t struct can be found on the stack. */
>>> 62 #define PTREGS SIGFRAME_CONTEXT_REGS32 /* 32-bit process offset is -672 */
>>> 63
>>> 64 /* Register REGNO can be found at offset OFS of the mcontext_t structure. */
>>> 65 .macro rsave regno,ofs
>>> 66 .byte 0x05 /* DW_CFA_offset_extended */
>>> 67 .uleb128 \regno; /* regno */
>>> 68 .uleb128 \ofs /* factored offset */
>>> 69 .endm
>>> 70
>>> 71 .Lcie:
>>> 72 .long .Lcie_end - .Lcie_start
>>> 73 .Lcie_start:
>>> 74 .long 0 /* CIE ID */
>>> 75 .byte 1 /* Version number */
>>> > 76 .stringz "zRS" /* NUL-terminated augmentation string */
>> _______________________________________________
>> kbuild-all mailing list -- kbuild-all@lists.01.org
>> To unsubscribe send an email to kbuild-all-leave@lists.01.org
>>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [deller-parisc:5.17-vdso-mini-3 1/1] arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
@ 2022-01-30 10:47 ` Helge Deller
0 siblings, 0 replies; 8+ messages in thread
From: Helge Deller @ 2022-01-30 10:47 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 10167 bytes --]
Hello Rong Chen,
On 1/30/22 07:53, Chen, Rong A wrote:
> On 1/30/2022 1:50 AM, Helge Deller wrote:
>> On 1/29/22 03:00, kernel test robot wrote:
>>> tree: https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git 5.17-vdso-mini-3
>>> head: 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
>>> commit: 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16 [1/1] parisc: Add vDSO support
>>> config: parisc-generic-64bit_defconfig (https://download.01.org/0day-ci/archive/20220129/202201290925.4WPmV6eS-lkp(a)intel.com/config)
>>> compiler: hppa64-linux-gcc (GCC) 11.2.0
>>> reproduce (this is a W=1 build):
>>> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>>> chmod +x ~/bin/make.cross
>>> # https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git/commit/?id=8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
>>> git remote add deller-parisc https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git
>>> git fetch --no-tags deller-parisc 5.17-vdso-mini-3
>>> git checkout 8d7e3770fb1fb6c01147f8ebf2914cd2037fac16
>>> # save the config file to linux build tree
>>> mkdir build_dir
>>> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=parisc prepare
>>
>> I'm somewhat confused by those errors.
>>
>> There are two changes which happened in the parisc port:
>>
>> 1.) If you want to build a 64bit kernel, you now need "ARCH=parisc64". Before "ARCH=parisc" was sufficient,
>> but now ARCH=parisc64 builds 64bit kernel, and ARCH=parisc builds the 32bit kernel.
>
> Hi Helge,
>
> Thanks for the explanation, we'll update to use ARCH=parisc64 for 64bit kernel.
>
>>
>> 2.) The patch which is being complained about here is, that it adds an initial vDSO, which
>> includes builds the 64- and 32-bit vDSO in the same build.
>> So, on a 64bit kernel build (which seems to happen here), the 32-bit gcc-11 compiler needs to be
>> installed as well in order to be able to build the 32-bit "compat" vDSO.
>> Maybe the errors here are happening, because the 32bit hppa cross compiler is missing?
>
> I tried the below command, the error still exists, is there anything wrong?
>
> $make W=1 --keep-going CROSS_COMPILE=hppa64-linux- -j32 O=./build_dir ARCH=parisc64 prepare
Please drop the "CROSS_COMPILE=hppa64-linux-" part.
It will autodetect the cross compiler, so this is sufficient:
make W=1 --keep-going -j32 O=./build_dir ARCH=parisc64 prepare
Helge
> ...
> Assembler messages:
> ../arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
> ../arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: bad or irreducible absolute expression
> ../arch/parisc/kernel/vdso32/sigtramp.S:40: Error: unknown pseudo-op: `.callinfo'
> ../arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: junk at end of line, first unrecognized character is `:'
> ../arch/parisc/kernel/vdso32/sigtramp.S:41: Error: unknown pseudo-op: `.entry'
> ../arch/parisc/kernel/vdso32/restart_syscall.S:26: Error: no such instruction: `ldw 0(%sp),%r31'
> ../arch/parisc/kernel/vdso32/restart_syscall.S:29: Error: no such instruction: `be 0x100(%sr2,%r0)'
> ../arch/parisc/kernel/vdso32/sigtramp.S:44: Error: no such instruction: `ldi 0,%r25'
> ../arch/parisc/kernel/vdso32/restart_syscall.S:30: Error: no such instruction: `ldi 0,%r20'
>
> Best Regards,
> Rong Chen
>
>>
>> Could you please check ?
>>
>> Helge
>>
>>
>>> All errors (new ones prefixed by >>):
>>>
>>> arch/parisc/kernel/vdso64/Makefile:30: FORCE prerequisite is missing
>>> arch/parisc/kernel/vdso32/sigtramp.S: Assembler messages:
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc'
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:40: Error: unknown pseudo-op: `.callinfo'
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:41: Error: unknown pseudo-op: `.entry'
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:44: Error: no such instruction: `ldi 0,%r25'
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:45: Error: no such instruction: `ldi 173,%r20'
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:46: Error: no such instruction: `ble 0x100(%sr2,%r0)'
>>> arch/parisc/kernel/vdso32/sigtramp.S:49: Error: no such instruction: `ldi 1,%r25'
>>> arch/parisc/kernel/vdso32/sigtramp.S:50: Error: no such instruction: `ldi 173,%r20'
>>> arch/parisc/kernel/vdso32/sigtramp.S:51: Error: no such instruction: `ble 0x100(%sr2,%r0)'
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:54: Error: unknown pseudo-op: `.exit'
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:55: Error: unknown pseudo-op: `.procend'
>>>>> arch/parisc/kernel/vdso32/sigtramp.S:76: Error: unknown pseudo-op: `.stringz'
>>> make[2]: *** [arch/parisc/kernel/vdso32/Makefile:34: arch/parisc/kernel/vdso32/sigtramp.o] Error 1
>>> arch/parisc/kernel/vdso32/restart_syscall.S: Assembler messages:
>>>>> arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: bad or irreducible absolute expression
>>>>> arch/parisc/kernel/vdso32/restart_syscall.S:16: Error: junk at end of line, first unrecognized character is `:'
>>>>> arch/parisc/kernel/vdso32/restart_syscall.S:26: Error: no such instruction: `ldw 0(%sp),%r31'
>>>>> arch/parisc/kernel/vdso32/restart_syscall.S:29: Error: no such instruction: `be 0x100(%sr2,%r0)'
>>>>> arch/parisc/kernel/vdso32/restart_syscall.S:30: Error: no such instruction: `ldi 0,%r20'
>>>>> arch/parisc/kernel/vdso32/restart_syscall.S:32: Error: .cfi_endproc without corresponding .cfi_startproc
>>> make[2]: *** [arch/parisc/kernel/vdso32/Makefile:34: arch/parisc/kernel/vdso32/restart_syscall.o] Error 1
>>> make[2]: Target 'include/generated/vdso32-offsets.h' not remade because of errors.
>>> make[1]: *** [arch/parisc/Makefile:186: vdso_prepare] Error 2
>>> make[1]: Target 'prepare' not remade because of errors.
>>> make: *** [Makefile:219: __sub-make] Error 2
>>> make: Target 'prepare' not remade because of errors.
>>>
>>>
>>> vim +39 arch/parisc/kernel/vdso32/sigtramp.S
>>>
>>> 12
>>> 13 .text
>>> 14
>>> 15 /* Gdb expects the trampoline is on the stack and the pc is offset from
>>> 16 a 64-byte boundary by 0, 4 or 5 instructions. Since the vdso trampoline
>>> 17 is not on the stack, we need a new variant with different offsets and
>>> 18 data to tell gdb where to find the signal context on the stack.
>>> 19
>>> 20 Here we put the offset to the context data at the start of the trampoline
>>> 21 region and offset the first trampoline by 2 instructions. Please do
>>> 22 not change the trampoline as the code in gdb depends on the following
>>> 23 instruction sequence exactly.
>>> 24 */
>>> 25 .align 64
>>> 26 .word SIGFRAME_CONTEXT_REGS32
>>> 27
>>> 28 /* The nop here is a hack. The dwarf2 unwind routines subtract 1 from
>>> 29 the return address to get an address in the middle of the presumed
>>> 30 call instruction. Since we don't have a call here, we artifically
>>> 31 extend the range covered by the unwind info by adding a nop before
>>> 32 the real start.
>>> 33 */
>>> 34 nop
>>> 35
>>> 36 .globl __kernel_sigtramp_rt
>>> 37 .type __kernel_sigtramp_rt, @function
>>> 38 __kernel_sigtramp_rt:
>>> > 39 .proc
>>> > 40 .callinfo FRAME=ASM_SIGFRAME_SIZE32,CALLS,SAVE_RP
>>> > 41 .entry
>>> 42
>>> 43 .Lsigrt_start = . - 4
>>> > 44 0: ldi 0, %r25 /* (in_syscall=0) */
>>> > 45 ldi __NR_rt_sigreturn, %r20
>>> > 46 ble 0x100(%sr2, %r0)
>>> 47 nop
>>> 48
>>> 49 1: ldi 1, %r25 /* (in_syscall=1) */
>>> 50 ldi __NR_rt_sigreturn, %r20
>>> 51 ble 0x100(%sr2, %r0)
>>> 52 nop
>>> 53 .Lsigrt_end:
>>> > 54 .exit
>>> > 55 .procend
>>> 56 .size __kernel_sigtramp_rt,.-__kernel_sigtramp_rt
>>> 57
>>> 58
>>> 59 .section .eh_frame,"a",@progbits
>>> 60
>>> 61 /* This is where the mcontext_t struct can be found on the stack. */
>>> 62 #define PTREGS SIGFRAME_CONTEXT_REGS32 /* 32-bit process offset is -672 */
>>> 63
>>> 64 /* Register REGNO can be found at offset OFS of the mcontext_t structure. */
>>> 65 .macro rsave regno,ofs
>>> 66 .byte 0x05 /* DW_CFA_offset_extended */
>>> 67 .uleb128 \regno; /* regno */
>>> 68 .uleb128 \ofs /* factored offset */
>>> 69 .endm
>>> 70
>>> 71 .Lcie:
>>> 72 .long .Lcie_end - .Lcie_start
>>> 73 .Lcie_start:
>>> 74 .long 0 /* CIE ID */
>>> 75 .byte 1 /* Version number */
>>> > 76 .stringz "zRS" /* NUL-terminated augmentation string */
>> _______________________________________________
>> kbuild-all mailing list -- kbuild-all(a)lists.01.org
>> To unsubscribe send an email to kbuild-all-leave(a)lists.01.org
>>
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2022-01-30 10:49 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-01-29 2:00 [deller-parisc:5.17-vdso-mini-3 1/1] arch/parisc/kernel/vdso32/sigtramp.S:39: Error: unknown pseudo-op: `.proc' kernel test robot
2022-01-29 2:00 ` kernel test robot
2022-01-29 17:50 ` Helge Deller
2022-01-29 17:50 ` Helge Deller
2022-01-30 6:53 ` [kbuild-all] " Chen, Rong A
2022-01-30 6:53 ` Chen, Rong A
2022-01-30 10:47 ` [kbuild-all] " Helge Deller
2022-01-30 10:47 ` Helge Deller
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