leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

parisc: Add cfi_startproc and cfi_endproc to assembly code

Browse Source 
Add ENTRY_CFI() and ENDPROC_CFI() macros for dwarf debug info and
convert assembly users to new macros.

Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Helge Deller 2016-10-05 22:28:46 +02:00
parent 2929e73800
commit f39cce654f
8 changed files with 121 additions and 80 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
arch/parisc/include/asm/dwarf.h Normal file
View File

@ -0,0 +1,23 @@
/*
* Copyright (C) 2016 Helge Deller <deller@gmx.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_PARISC_DWARF_H
#define _ASM_PARISC_DWARF_H
#ifdef __ASSEMBLY__
#define CFI_STARTPROC .cfi_startproc
#define CFI_ENDPROC .cfi_endproc
#define CFI_DEF_CFA .cfi_def_cfa
#define CFI_REGISTER .cfi_register
#define CFI_REL_OFFSET .cfi_rel_offset
#define CFI_UNDEFINED .cfi_undefined
#endif /* __ASSEMBLY__ */
#endif /* _ASM_PARISC_DWARF_H */

12
arch/parisc/include/asm/linkage.h
View File

@ -1,6 +1,8 @@
#ifndef __ASM_PARISC_LINKAGE_H
#define __ASM_PARISC_LINKAGE_H
#include <asm/dwarf.h>
#ifndef __ALIGN
#define __ALIGN .align 4
#define __ALIGN_STR ".align 4"
@ -10,6 +12,8 @@
* In parisc assembly a semicolon marks a comment while a
* exclamation mark is used to separate independent lines.
*/
#define ASM_NL !
#ifdef __ASSEMBLY__
#define ENTRY(name) \
@ -26,6 +30,14 @@ name:
END(name)
#endif
#define ENTRY_CFI(name) \
ENTRY(name) ASM_NL\
CFI_STARTPROC
#define ENDPROC_CFI(name) \
ENDPROC(name) ASM_NL\
CFI_ENDPROC
#endif /* __ASSEMBLY__ */
#endif /* __ASM_PARISC_LINKAGE_H */

46
arch/parisc/kernel/entry.S
View File

@ -766,7 +766,7 @@ ENTRY(end_fault_vector)
* copy_thread moved args into task save area.
*/
ENTRY(ret_from_kernel_thread)
ENTRY_CFI(ret_from_kernel_thread)
/* Call schedule_tail first though */
BL schedule_tail, %r2
@ -782,7 +782,7 @@ ENTRY(ret_from_kernel_thread)
copy %r31, %r2
b finish_child_return
nop
ENDPROC(ret_from_kernel_thread)
ENDPROC_CFI(ret_from_kernel_thread)
/*
@ -790,7 +790,7 @@ ENDPROC(ret_from_kernel_thread)
* struct task_struct *next)
*
* switch kernel stacks and return prev */
ENTRY(_switch_to)
ENTRY_CFI(_switch_to)
STREG %r2, -RP_OFFSET(%r30)
callee_save_float
@ -815,7 +815,7 @@ _switch_to_ret:
LDREG -RP_OFFSET(%r30), %r2
bv %r0(%r2)
copy %r26, %r28
ENDPROC(_switch_to)
ENDPROC_CFI(_switch_to)
/*
* Common rfi return path for interruptions, kernel execve, and
@ -833,7 +833,7 @@ ENDPROC(_switch_to)
.align PAGE_SIZE
ENTRY(syscall_exit_rfi)
ENTRY_CFI(syscall_exit_rfi)
mfctl %cr30,%r16
LDREG TI_TASK(%r16), %r16 /* thread_info -> task_struct */
ldo TASK_REGS(%r16),%r16
@ -1037,12 +1037,12 @@ intr_extint:
b do_cpu_irq_mask
ldo R%intr_return(%r2), %r2 /* return to intr_return, not here */
ENDPROC(syscall_exit_rfi)
ENDPROC_CFI(syscall_exit_rfi)
/* Generic interruptions (illegal insn, unaligned, page fault, etc) */
ENTRY(intr_save) /* for os_hpmc */
ENTRY_CFI(intr_save) /* for os_hpmc */
mfsp %sr7,%r16
cmpib,COND(=),n 0,%r16,1f
get_stack_use_cr30
@ -1117,7 +1117,7 @@ skip_save_ior:
b handle_interruption
ldo R%intr_check_sig(%r2), %r2
ENDPROC(intr_save)
ENDPROC_CFI(intr_save)
/*
@ -1720,7 +1720,7 @@ dtlb_fault:
.endm
.macro fork_like name
ENTRY(sys_\name\()_wrapper)
ENTRY_CFI(sys_\name\()_wrapper)
LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30), %r1
ldo TASK_REGS(%r1),%r1
reg_save %r1
@ -1728,7 +1728,7 @@ ENTRY(sys_\name\()_wrapper)
ldil L%sys_\name, %r31
be R%sys_\name(%sr4,%r31)
STREG %r28, PT_CR27(%r1)
ENDPROC(sys_\name\()_wrapper)
ENDPROC_CFI(sys_\name\()_wrapper)
.endm
fork_like clone
@ -1736,7 +1736,7 @@ fork_like fork
fork_like vfork
/* Set the return value for the child */
ENTRY(child_return)
ENTRY_CFI(child_return)
BL schedule_tail, %r2
nop
finish_child_return:
@ -1748,9 +1748,9 @@ finish_child_return:
reg_restore %r1
b syscall_exit
copy %r0,%r28
ENDPROC(child_return)
ENDPROC_CFI(child_return)
ENTRY(sys_rt_sigreturn_wrapper)
ENTRY_CFI(sys_rt_sigreturn_wrapper)
LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r26
ldo TASK_REGS(%r26),%r26 /* get pt regs */
/* Don't save regs, we are going to restore them from sigcontext. */
@ -1778,9 +1778,9 @@ ENTRY(sys_rt_sigreturn_wrapper)
*/
bv %r0(%r2)
LDREG PT_GR28(%r1),%r28 /* reload original r28 for syscall_exit */
ENDPROC(sys_rt_sigreturn_wrapper)
ENDPROC_CFI(sys_rt_sigreturn_wrapper)
ENTRY(syscall_exit)
ENTRY_CFI(syscall_exit)
/* NOTE: Not all syscalls exit this way. rt_sigreturn will exit
* via syscall_exit_rfi if the signal was received while the process
* was running.
@ -1979,7 +1979,7 @@ syscall_do_resched:
#else
nop
#endif
ENDPROC(syscall_exit)
ENDPROC_CFI(syscall_exit)
#ifdef CONFIG_FUNCTION_TRACER
@ -2023,7 +2023,7 @@ ENDPROC(mcount)
.align 8
.globl return_to_handler
.type return_to_handler, @function
ENTRY(return_to_handler)
ENTRY_CFI(return_to_handler)
.proc
.callinfo caller,frame=FRAME_SIZE
.entry
@ -2067,7 +2067,7 @@ parisc_return_to_handler:
LDREGM -FRAME_SIZE(%sp),%r3
.exit
.procend
ENDPROC(return_to_handler)
ENDPROC_CFI(return_to_handler)
#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
@ -2076,7 +2076,7 @@ ENDPROC(return_to_handler)
#ifdef CONFIG_IRQSTACKS
/* void call_on_stack(unsigned long param1, void *func,
unsigned long new_stack) */
ENTRY(call_on_stack)
ENTRY_CFI(call_on_stack)
copy %sp, %r1
/* Regarding the HPPA calling conventions for function pointers,
@ -2112,10 +2112,10 @@ ENTRY(call_on_stack)
bv (%rp)
LDREG -68(%sp), %sp
# endif /* CONFIG_64BIT */
ENDPROC(call_on_stack)
ENDPROC_CFI(call_on_stack)
#endif /* CONFIG_IRQSTACKS */
get_register:
ENTRY_CFI(get_register)
/*
* get_register is used by the non access tlb miss handlers to
* copy the value of the general register specified in r8 into
@ -2192,9 +2192,10 @@ get_register:
copy %r30,%r1
bv %r0(%r25) /* r31 */
copy %r31,%r1
ENDPROC_CFI(get_register)
set_register:
ENTRY_CFI(set_register)
/*
* set_register is used by the non access tlb miss handlers to
* copy the value of r1 into the general register specified in
@ -2266,4 +2267,5 @@ set_register:
copy %r1,%r30
bv %r0(%r25) /* r31 */
copy %r1,%r31
ENDPROC_CFI(set_register)

4
arch/parisc/kernel/hpmc.S
View File

@ -83,7 +83,7 @@ END(hpmc_pim_data)
.text
.import intr_save, code
ENTRY(os_hpmc)
ENTRY_CFI(os_hpmc)
.os_hpmc:
/*
@ -299,7 +299,7 @@ os_hpmc_6:
b .
nop
ENDPROC(os_hpmc)
ENDPROC_CFI(os_hpmc)
.os_hpmc_end:

68
arch/parisc/kernel/pacache.S
View File

@ -41,7 +41,7 @@
.text
.align 128
ENTRY(flush_tlb_all_local)
ENTRY_CFI(flush_tlb_all_local)
.proc
.callinfo NO_CALLS
.entry
@ -190,11 +190,11 @@ fdtdone:
.exit
.procend
ENDPROC(flush_tlb_all_local)
ENDPROC_CFI(flush_tlb_all_local)
.import cache_info,data
ENTRY(flush_instruction_cache_local)
ENTRY_CFI(flush_instruction_cache_local)
.proc
.callinfo NO_CALLS
.entry
@ -257,11 +257,11 @@ fisync:
.exit
.procend
ENDPROC(flush_instruction_cache_local)
ENDPROC_CFI(flush_instruction_cache_local)
.import cache_info, data
ENTRY(flush_data_cache_local)
ENTRY_CFI(flush_data_cache_local)
.proc
.callinfo NO_CALLS
.entry
@ -325,7 +325,7 @@ fdsync:
.exit
.procend
ENDPROC(flush_data_cache_local)
ENDPROC_CFI(flush_data_cache_local)
.align 16
@ -356,7 +356,7 @@ ENDPROC(flush_data_cache_local)
/* Clear page using kernel mapping. */
ENTRY(clear_page_asm)
ENTRY_CFI(clear_page_asm)
.proc
.callinfo NO_CALLS
.entry
@ -422,11 +422,11 @@ ENTRY(clear_page_asm)
.exit
.procend
ENDPROC(clear_page_asm)
ENDPROC_CFI(clear_page_asm)
/* Copy page using kernel mapping. */
ENTRY(copy_page_asm)
ENTRY_CFI(copy_page_asm)
.proc
.callinfo NO_CALLS
.entry
@ -540,7 +540,7 @@ ENTRY(copy_page_asm)
.exit
.procend
ENDPROC(copy_page_asm)
ENDPROC_CFI(copy_page_asm)
/*
* NOTE: Code in clear_user_page has a hard coded dependency on the
@ -592,7 +592,7 @@ ENDPROC(copy_page_asm)
*
*/
ENTRY(copy_user_page_asm)
ENTRY_CFI(copy_user_page_asm)
.proc
.callinfo NO_CALLS
.entry
@ -748,9 +748,9 @@ ENTRY(copy_user_page_asm)
.exit
.procend
ENDPROC(copy_user_page_asm)
ENDPROC_CFI(copy_user_page_asm)
ENTRY(clear_user_page_asm)
ENTRY_CFI(clear_user_page_asm)
.proc
.callinfo NO_CALLS
.entry
@ -834,9 +834,9 @@ ENTRY(clear_user_page_asm)
.exit
.procend
ENDPROC(clear_user_page_asm)
ENDPROC_CFI(clear_user_page_asm)
ENTRY(flush_dcache_page_asm)
ENTRY_CFI(flush_dcache_page_asm)
.proc
.callinfo NO_CALLS
.entry
@ -910,9 +910,9 @@ ENTRY(flush_dcache_page_asm)
.exit
.procend
ENDPROC(flush_dcache_page_asm)
ENDPROC_CFI(flush_dcache_page_asm)
ENTRY(flush_icache_page_asm)
ENTRY_CFI(flush_icache_page_asm)
.proc
.callinfo NO_CALLS
.entry
@ -988,9 +988,9 @@ ENTRY(flush_icache_page_asm)
.exit
.procend
ENDPROC(flush_icache_page_asm)
ENDPROC_CFI(flush_icache_page_asm)
ENTRY(flush_kernel_dcache_page_asm)
ENTRY_CFI(flush_kernel_dcache_page_asm)
.proc
.callinfo NO_CALLS
.entry
@ -1031,9 +1031,9 @@ ENTRY(flush_kernel_dcache_page_asm)
.exit
.procend
ENDPROC(flush_kernel_dcache_page_asm)
ENDPROC_CFI(flush_kernel_dcache_page_asm)
ENTRY(purge_kernel_dcache_page_asm)
ENTRY_CFI(purge_kernel_dcache_page_asm)
.proc
.callinfo NO_CALLS
.entry
@ -1073,9 +1073,9 @@ ENTRY(purge_kernel_dcache_page_asm)
.exit
.procend
ENDPROC(purge_kernel_dcache_page_asm)
ENDPROC_CFI(purge_kernel_dcache_page_asm)
ENTRY(flush_user_dcache_range_asm)
ENTRY_CFI(flush_user_dcache_range_asm)
.proc
.callinfo NO_CALLS
.entry
@ -1094,9 +1094,9 @@ ENTRY(flush_user_dcache_range_asm)
.exit
.procend
ENDPROC(flush_user_dcache_range_asm)
ENDPROC_CFI(flush_user_dcache_range_asm)
ENTRY(flush_kernel_dcache_range_asm)
ENTRY_CFI(flush_kernel_dcache_range_asm)
.proc
.callinfo NO_CALLS
.entry
@ -1116,9 +1116,9 @@ ENTRY(flush_kernel_dcache_range_asm)
.exit
.procend
ENDPROC(flush_kernel_dcache_range_asm)
ENDPROC_CFI(flush_kernel_dcache_range_asm)
ENTRY(flush_user_icache_range_asm)
ENTRY_CFI(flush_user_icache_range_asm)
.proc
.callinfo NO_CALLS
.entry
@ -1137,9 +1137,9 @@ ENTRY(flush_user_icache_range_asm)
.exit
.procend
ENDPROC(flush_user_icache_range_asm)
ENDPROC_CFI(flush_user_icache_range_asm)
ENTRY(flush_kernel_icache_page)
ENTRY_CFI(flush_kernel_icache_page)
.proc
.callinfo NO_CALLS
.entry
@ -1180,9 +1180,9 @@ ENTRY(flush_kernel_icache_page)
.exit
.procend
ENDPROC(flush_kernel_icache_page)
ENDPROC_CFI(flush_kernel_icache_page)
ENTRY(flush_kernel_icache_range_asm)
ENTRY_CFI(flush_kernel_icache_range_asm)
.proc
.callinfo NO_CALLS
.entry
@ -1200,13 +1200,13 @@ ENTRY(flush_kernel_icache_range_asm)
nop
.exit
.procend
ENDPROC(flush_kernel_icache_range_asm)
ENDPROC_CFI(flush_kernel_icache_range_asm)
/* align should cover use of rfi in disable_sr_hashing_asm and
* srdis_done.
*/
.align 256
ENTRY(disable_sr_hashing_asm)
ENTRY_CFI(disable_sr_hashing_asm)
.proc
.callinfo NO_CALLS
.entry
@ -1295,6 +1295,6 @@ srdis_done:
.exit
.procend
ENDPROC(disable_sr_hashing_asm)
ENDPROC_CFI(disable_sr_hashing_asm)
.end

24
arch/parisc/kernel/real2.S
View File

@ -61,7 +61,7 @@ save_cr_end:
* iodc_fn is the IODC function to call
*/
ENTRY(real32_call_asm)
ENTRY_CFI(real32_call_asm)
STREG %rp, -RP_OFFSET(%sp) /* save RP */
#ifdef CONFIG_64BIT
callee_save
@ -119,14 +119,14 @@ ric_ret:
LDREG -RP_OFFSET(%sp), %rp /* restore RP */
bv 0(%rp)
nop
ENDPROC(real32_call_asm)
ENDPROC_CFI(real32_call_asm)
# define PUSH_CR(r, where) mfctl r, %r1 ! STREG,ma %r1, REG_SZ(where)
# define POP_CR(r, where) LDREG,mb -REG_SZ(where), %r1 ! mtctl %r1, r
.text
save_control_regs:
ENTRY_CFI(save_control_regs)
load32 PA(save_cr_space), %r28
PUSH_CR(%cr24, %r28)
PUSH_CR(%cr25, %r28)
@ -139,8 +139,9 @@ save_control_regs:
PUSH_CR(%cr15, %r28)
bv 0(%r2)
nop
ENDPROC_CFI(save_control_regs)
restore_control_regs:
ENTRY_CFI(restore_control_regs)
load32 PA(save_cr_end), %r26
POP_CR(%cr15, %r26)
POP_CR(%cr31, %r26)
@ -153,13 +154,14 @@ restore_control_regs:
POP_CR(%cr24, %r26)
bv 0(%r2)
nop
ENDPROC_CFI(restore_control_regs)
/* rfi_virt2real() and rfi_real2virt() could perhaps be adapted for
* more general-purpose use by the several places which need RFIs
*/
.text
.align 128
rfi_virt2real:
ENTRY_CFI(rfi_virt2real)
/* switch to real mode... */
rsm PSW_SM_I,%r0
load32 PA(rfi_v2r_1), %r1
@ -191,10 +193,11 @@ rfi_v2r_1:
tophys_r1 %r2
bv 0(%r2)
nop
ENDPROC_CFI(rfi_virt2real)
.text
.align 128
rfi_real2virt:
ENTRY_CFI(rfi_real2virt)
rsm PSW_SM_I,%r0
load32 (rfi_r2v_1), %r1
nop
@ -225,6 +228,7 @@ rfi_r2v_1:
tovirt_r1 %r2
bv 0(%r2)
nop
ENDPROC_CFI(rfi_real2virt)
#ifdef CONFIG_64BIT
@ -238,7 +242,7 @@ rfi_r2v_1:
* arg0p points to where saved arg values may be found
* iodc_fn is the IODC function to call
*/
ENTRY(real64_call_asm)
ENTRY_CFI(real64_call_asm)
std %rp, -0x10(%sp) /* save RP */
std %sp, -8(%arg0) /* save SP on real-mode stack */
copy %arg0, %sp /* adopt the real-mode SP */
@ -284,7 +288,7 @@ r64_ret:
ldd -0x10(%sp), %rp /* restore RP */
bv 0(%rp)
nop
ENDPROC(real64_call_asm)
ENDPROC_CFI(real64_call_asm)
#endif
@ -293,12 +297,12 @@ ENDPROC(real64_call_asm)
** GCC 3.3 and later has a new function in libgcc.a for
** comparing function pointers.
*/
ENTRY(__canonicalize_funcptr_for_compare)
ENTRY_CFI(__canonicalize_funcptr_for_compare)
#ifdef CONFIG_64BIT
bve (%r2)
#else
bv %r0(%r2)
#endif
copy %r26,%r28
ENDPROC(__canonicalize_funcptr_for_compare)
ENDPROC_CFI(__canonicalize_funcptr_for_compare)

16
arch/parisc/lib/fixup.S
View File

@ -65,34 +65,34 @@
.section .fixup, "ax"
/* get_user() fixups, store -EFAULT in r8, and 0 in r9 */
ENTRY(fixup_get_user_skip_1)
ENTRY_CFI(fixup_get_user_skip_1)
get_fault_ip %r1,%r8
ldo 4(%r1), %r1
ldi -EFAULT, %r8
bv %r0(%r1)
copy %r0, %r9
ENDPROC(fixup_get_user_skip_1)
ENDPROC_CFI(fixup_get_user_skip_1)
ENTRY(fixup_get_user_skip_2)
ENTRY_CFI(fixup_get_user_skip_2)
get_fault_ip %r1,%r8
ldo 8(%r1), %r1
ldi -EFAULT, %r8
bv %r0(%r1)
copy %r0, %r9
ENDPROC(fixup_get_user_skip_2)
ENDPROC_CFI(fixup_get_user_skip_2)
/* put_user() fixups, store -EFAULT in r8 */
ENTRY(fixup_put_user_skip_1)
ENTRY_CFI(fixup_put_user_skip_1)
get_fault_ip %r1,%r8
ldo 4(%r1), %r1
bv %r0(%r1)
ldi -EFAULT, %r8
ENDPROC(fixup_put_user_skip_1)
ENDPROC_CFI(fixup_put_user_skip_1)
ENTRY(fixup_put_user_skip_2)
ENTRY_CFI(fixup_put_user_skip_2)
get_fault_ip %r1,%r8
ldo 8(%r1), %r1
bv %r0(%r1)
ldi -EFAULT, %r8
ENDPROC(fixup_put_user_skip_2)
ENDPROC_CFI(fixup_put_user_skip_2)

8
arch/parisc/lib/lusercopy.S
View File

@ -67,7 +67,7 @@
* otherwise, returns number of bytes not transferred.
*/
ENTRY(lclear_user)
ENTRY_CFI(lclear_user)
.proc
.callinfo NO_CALLS
.entry
@ -81,7 +81,7 @@ $lclu_done:
bv %r0(%r2)
copy %r25,%r28
.exit
ENDPROC(lclear_user)
ENDPROC_CFI(lclear_user)
.section .fixup,"ax"
2: fixup_branch $lclu_done
@ -100,7 +100,7 @@ ENDPROC(lclear_user)
* else strlen + 1 (i.e. includes zero byte).
*/
ENTRY(lstrnlen_user)
ENTRY_CFI(lstrnlen_user)
.proc
.callinfo NO_CALLS
.entry
@ -120,7 +120,7 @@ $lslen_done:
$lslen_nzero:
b $lslen_done
ldo 1(%r26),%r26 /* special case for N == 0 */
ENDPROC(lstrnlen_user)
ENDPROC_CFI(lstrnlen_user)
.section .fixup,"ax"
3: fixup_branch $lslen_done