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MFC r269390: Fix unwind info in hand-written asm (avoid nested functions).

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This commit is contained in:
ian 2014-08-11 01:29:28 +00:00
parent 6ffbefa108
commit 059e60aeba
14 changed files with 82 additions and 60 deletions
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4
sys/arm/arm/cpufunc_asm_arm10.S
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@ -209,7 +209,7 @@ ENTRY_NP(arm10_idcache_wbinv_all)
mcr p15, 0, r0, c7, c5, 0 /* Flush I cache */
/* Fall through to purge Dcache. */
ENTRY(arm10_dcache_wbinv_all)
EENTRY(arm10_dcache_wbinv_all)
.Larm10_dcache_wbinv_all:
ldr ip, .Larm10_cache_data
ldmia ip, {s_max, i_max, s_inc, i_inc}
@ -223,8 +223,8 @@ ENTRY(arm10_dcache_wbinv_all)
bhs .Lnext_set_inv /* Next set */
mcr p15, 0, r0, c7, c10, 4 /* drain the write buffer */
bx lr
EEND(arm10_dcache_wbinv_all)
END(arm10_idcache_wbinv_all)
END(arm10_dcache_wbinv_all)
.Larm10_cache_data:
.word _C_LABEL(arm10_dcache_sets_max)

4
sys/arm/arm/cpufunc_asm_arm9.S
View File

@ -197,7 +197,7 @@ ENTRY_NP(arm9_idcache_wbinv_all)
mcr p15, 0, r0, c7, c5, 0 /* Flush I cache */
/* Fall through */
ENTRY(arm9_dcache_wbinv_all)
EENTRY(arm9_dcache_wbinv_all)
.Larm9_dcache_wbinv_all:
ldr ip, .Larm9_cache_data
ldmia ip, {s_max, i_max, s_inc, i_inc}
@ -210,8 +210,8 @@ ENTRY(arm9_dcache_wbinv_all)
subs s_max, s_max, s_inc
bhs .Lnext_set_inv /* Next set */
mov pc, lr
EEND(arm9_dcache_wbinv_all)
END(arm9_idcache_wbinv_all)
END(arm9_dcache_wbinv_all)
.Larm9_cache_data:
.word _C_LABEL(arm9_dcache_sets_max)

5
sys/arm/arm/cpufunc_asm_armv5.S
View File

@ -194,6 +194,7 @@ ENTRY(armv5_idcache_wbinv_range)
END(armv5_idcache_wbinv_range)
ENTRY_NP(armv5_idcache_wbinv_all)
armv5_idcache_wbinv_all:
.Larmv5_idcache_wbinv_all:
/*
* We assume that the code here can never be out of sync with the
@ -203,7 +204,7 @@ ENTRY_NP(armv5_idcache_wbinv_all)
mcr p15, 0, r0, c7, c5, 0 /* Flush I cache */
/* Fall through to purge Dcache. */
ENTRY(armv5_dcache_wbinv_all)
EENTRY(armv5_dcache_wbinv_all)
.Larmv5_dcache_wbinv_all:
ldr ip, .Larmv5_cache_data
ldmia ip, {s_max, i_max, s_inc, i_inc}
@ -219,8 +220,8 @@ ENTRY(armv5_dcache_wbinv_all)
bpl 1b /* Next set */
mcr p15, 0, r0, c7, c10, 4 /* drain the write buffer */
RET
EEND(armv5_dcache_wbinv_all)
END(armv5_idcache_wbinv_all)
END(armv5_dcache_wbinv_all)
.Larmv5_cache_data:
.word _C_LABEL(armv5_dcache_sets_max)

4
sys/arm/arm/cpufunc_asm_armv6.S
View File

@ -137,12 +137,12 @@ ENTRY_NP(armv6_idcache_wbinv_all)
/* Fall through to purge Dcache. */
/* LINTSTUB: void armv6_dcache_wbinv_all(void); */
ENTRY(armv6_dcache_wbinv_all)
EENTRY(armv6_dcache_wbinv_all)
mcr p15, 0, r0, c7, c14, 0 /* clean & invalidate D cache */
mcr p15, 0, r0, c7, c10, 4 /* drain the write buffer */
RET
EEND(armv6_dcache_wbinv_all)
END(armv6_idcache_wbinv_all)
END(armv6_dcache_wbinv_all)
ENTRY(armv6_idcache_inv_all)
mov r0, #0

2
sys/arm/arm/cpufunc_asm_armv7.S
View File

@ -358,7 +358,7 @@ ENTRY(armv7_idcache_inv_all)
mcr p15, 0, r0, c7, c5, 0 @ invalidate instruction+branch cache
isb @ instruction sync barrier
bx lr @ return
END(armv7_l1cache_inv_all)
END(armv7_idcache_inv_all)
ENTRY_NP(armv7_sleep)
dsb

21
sys/arm/arm/cpufunc_asm_xscale.S
View File

@ -306,11 +306,12 @@ _C_LABEL(xscale_minidata_clean_size):
XSCALE_CACHE_CLEAN_UNBLOCK
ENTRY_NP(xscale_cache_syncI)
ENTRY_NP(xscale_cache_purgeID)
EENTRY_NP(xscale_cache_purgeID)
mcr p15, 0, r0, c7, c5, 0 /* flush I cache (D cleaned below) */
ENTRY_NP(xscale_cache_cleanID)
ENTRY_NP(xscale_cache_purgeD)
ENTRY(xscale_cache_cleanD)
EENTRY_NP(xscale_cache_cleanID)
EENTRY_NP(xscale_cache_purgeD)
EENTRY(xscale_cache_cleanD)
XSCALE_CACHE_CLEAN_PROLOGUE
1: subs r0, r0, #32
@ -326,11 +327,11 @@ ENTRY(xscale_cache_cleanD)
XSCALE_CACHE_CLEAN_EPILOGUE
RET
EEND(xscale_cache_cleanD)
EEND(xscale_cache_purgeD)
EEND(xscale_cache_cleanID)
EEND(xscale_cache_purgeID)
END(xscale_cache_syncI)
END(xscale_cache_purgeID)
END(xscale_cache_cleanID)
END(xscale_cache_purgeD)
END(xscale_cache_cleanD)
/*
* Clean the mini-data cache.
@ -374,7 +375,7 @@ END(xscale_cache_purgeD_E)
*/
/* xscale_cache_syncI is identical to xscale_cache_purgeID */
ENTRY(xscale_cache_cleanID_rng)
EENTRY(xscale_cache_cleanID_rng)
ENTRY(xscale_cache_cleanD_rng)
cmp r1, #0x4000
bcs _C_LABEL(xscale_cache_cleanID)
@ -393,7 +394,7 @@ ENTRY(xscale_cache_cleanD_rng)
mcr p15, 0, r0, c7, c10, 4 /* drain write buffer */
CPWAIT_AND_RETURN(r0)
END(xscale_cache_cleanID_rng)
/*END(xscale_cache_cleanID_rng)*/
END(xscale_cache_cleanD_rng)
ENTRY(xscale_cache_purgeID_rng)

21
sys/arm/arm/cpufunc_asm_xscale_c3.S
View File

@ -143,11 +143,12 @@ __FBSDID("$FreeBSD$");
ENTRY_NP(xscalec3_cache_syncI)
ENTRY_NP(xscalec3_cache_purgeID)
xscalec3_cache_purgeID:
EENTRY_NP(xscalec3_cache_purgeID)
mcr p15, 0, r0, c7, c5, 0 /* flush I cache (D cleaned below) */
ENTRY_NP(xscalec3_cache_cleanID)
ENTRY_NP(xscalec3_cache_purgeD)
ENTRY(xscalec3_cache_cleanD)
EENTRY_NP(xscalec3_cache_cleanID)
EENTRY_NP(xscalec3_cache_purgeD)
EENTRY(xscalec3_cache_cleanD)
XSCALE_CACHE_CLEAN_BLOCK
mov r0, #0
@ -168,11 +169,11 @@ ENTRY(xscalec3_cache_cleanD)
mcr p15, 0, r0, c7, c10, 4 /* drain write buffer */
RET
EEND(xscalec3_cache_purgeID)
EEND(xscalec3_cache_cleanID)
EEND(xscalec3_cache_purgeD)
EEND(xscalec3_cache_cleanD)
END(xscalec3_cache_syncI)
END(xscalec3_cache_purgeID)
END(xscalec3_cache_cleanID)
END(xscalec3_cache_purgeD)
END(xscalec3_cache_cleanD)
ENTRY(xscalec3_cache_purgeID_rng)
@ -238,7 +239,7 @@ ENTRY(xscalec3_cache_purgeD_rng)
END(xscalec3_cache_purgeD_rng)
ENTRY(xscalec3_cache_cleanID_rng)
ENTRY(xscalec3_cache_cleanD_rng)
EENTRY(xscalec3_cache_cleanD_rng)
cmp r1, #0x4000
bcs _C_LABEL(xscalec3_cache_cleanID)
@ -257,8 +258,8 @@ ENTRY(xscalec3_cache_cleanD_rng)
mcr p15, 0, r0, c7, c10, 4 /* drain write buffer */
CPWAIT_AND_RETURN(r0)
EEND(xscalec3_cache_cleanD_rng)
END(xscalec3_cache_cleanID_rng)
END(xscalec3_cache_cleanD_rng)
ENTRY(xscalec3_l2cache_purge)
/* Clean-up the L2 cache */

4
sys/arm/arm/exception.S
View File

@ -280,12 +280,12 @@ ASENTRY_NP(swi_entry)
* that a newly created thread appears to return from a SWI just like
* the parent thread that created it.
*/
ASENTRY_NP(swi_exit)
ASEENTRY_NP(swi_exit)
DO_AST /* Handle pending signals. */
PULLFRAME /* Deallocate trapframe. */
movs pc, lr /* Return to userland. */
STOP_UNWINDING /* Don't unwind into user mode. */
END(swi_exit)
EEND(swi_exit)
END(swi_entry)
/*

9
sys/arm/arm/fusu.S
View File

@ -54,8 +54,8 @@ __FBSDID("$FreeBSD$");
* Fetch an int from the user's address space.
*/
ENTRY_NP(casuword32)
ENTRY(casuword)
EENTRY_NP(casuword32)
GET_PCB(r3)
ldr r3, [r3]
@ -91,7 +91,7 @@ ENTRY(casuword)
mov r1, #0x00000000
str r1, [r3, #PCB_ONFAULT]
RET
END(casuword32)
EEND(casuword32)
END(casuword)
/*
@ -110,8 +110,8 @@ END(casuword)
* Fetch an int from the user's address space.
*/
ENTRY_NP(fuword32)
ENTRY(fuword)
EENTRY_NP(fuword32)
GET_PCB(r2)
ldr r2, [r2]
@ -277,8 +277,8 @@ fusupcbfaulttext:
* Store an int in the user's address space.
*/
ENTRY_NP(suword32)
ENTRY(suword)
EENTRY_NP(suword32)
GET_PCB(r2)
ldr r2, [r2]
@ -390,4 +390,3 @@ ENTRY(subyte)
str r0, [r2, #PCB_ONFAULT]
RET
END(subyte)

8
sys/arm/arm/locore.S
View File

@ -75,7 +75,8 @@ __FBSDID("$FreeBSD$");
* For both types of boot we gather up the args, put them in a struct arm_boot_params
* structure and pass that to initarm.
*/
ENTRY_NP(btext)
.globl btext
btext:
ASENTRY_NP(_start)
STOP_UNWINDING /* Can't unwind into the bootloader! */
@ -261,7 +262,6 @@ virt_done:
adr r0, .Lmainreturned
b _C_LABEL(panic)
/* NOTREACHED */
END(btext)
END(_start)
/*
@ -524,7 +524,7 @@ ENTRY_NP(sigcode)
/* Branch back to retry SYS_sigreturn */
b . - 16
END(sigcode)
.word SYS_sigreturn
.word SYS_exit
@ -536,5 +536,5 @@ ENTRY_NP(sigcode)
.global szsigcode
szsigcode:
.long esigcode-sigcode
END(sigcode)
/* End of locore.S */

4
sys/arm/arm/setstack.s
View File

@ -71,7 +71,7 @@ ENTRY(set_stackptr)
msr cpsr_fsxc, r3 /* Restore the old mode */
mov pc, lr /* Exit */
END(set_stackptr)
/* To get the stack pointer for a particular mode we must switch
* to that mode copy the banked r13 and then switch back.
* This routine provides an easy way of doing this for any mode
@ -90,5 +90,5 @@ ENTRY(get_stackptr)
msr cpsr_fsxc, r3 /* Restore the old mode */
mov pc, lr /* Exit */
END(get_stackptr)
/* End of setstack.S */

13
sys/arm/arm/support.S
View File

@ -130,7 +130,7 @@ ENTRY(bzero)
.Lnormal0:
mov r3, #0x00
b do_memset
EEND(bzero)
/* LINTSTUB: Func: void *memset(void *, int, size_t) */
ENTRY(memset)
and r3, r1, #0xff /* We deal with bytes */
@ -276,7 +276,6 @@ do_memset:
strgeb r3, [ip], #0x01 /* Set another byte */
strgtb r3, [ip] /* and a third */
RET /* Exit */
END(bzero)
END(memset)
ENTRY(bcmp)
@ -394,7 +393,7 @@ ENTRY(bcopy)
eor r0, r1, r0
eor r1, r0, r1
eor r0, r1, r0
ENTRY(memmove)
EENTRY(memmove)
/* Do the buffers overlap? */
cmp r0, r1
RETeq /* Bail now if src/dst are the same */
@ -931,8 +930,8 @@ ENTRY(memmove)
.Lmemmove_bsrcul1l4:
add r1, r1, #1
b .Lmemmove_bl4
EEND(memmove)
END(bcopy)
END(memmove)
#if !defined(_ARM_ARCH_5E)
ENTRY(memcpy)
@ -2945,13 +2944,17 @@ END(memcpy)
ENTRY(user)
nop
END(user)
ENTRY(btrap)
nop
END(btrap)
ENTRY(etrap)
nop
END(etrap)
ENTRY(bintr)
nop
END(bintr)
ENTRY(eintr)
nop
END(eintr)
#endif

19
sys/arm/include/asm.h
View File

@ -74,9 +74,20 @@
#define GLOBAL(X) .globl x
#define _ENTRY(x) \
.text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x: _FNSTART
#define _END(x) .size x, . - x; _FNEND
/*
* EENTRY()/EEND() mark "extra" entry/exit points from a function.
* The unwind info cannot handle the concept of a nested function, or a function
* with multiple .fnstart directives, but some of our assembler code is written
* with multiple labels to allow entry at several points. The EENTRY() macro
* defines such an extra entry point without a new .fnstart, so that it's
* basically just a label that you can jump to. The EEND() macro does nothing
* at all, except document the exit point associated with the same-named entry.
*/
#define _EENTRY(x) .globl x; .type x,_ASM_TYPE_FUNCTION; x:
#define _EEND(x) /* nothing */
#ifdef GPROF
# define _PROF_PROLOGUE \
mov ip, lr; bl __mcount
@ -85,11 +96,17 @@
#endif
#define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
#define EENTRY(y) _EENTRY(_C_LABEL(y)); _PROF_PROLOGUE
#define ENTRY_NP(y) _ENTRY(_C_LABEL(y))
#define EENTRY_NP(y) _EENTRY(_C_LABEL(y))
#define END(y) _END(_C_LABEL(y))
#define EEND(y)
#define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
#define ASEENTRY(y) _EENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
#define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y))
#define ASEENTRY_NP(y) _EENTRY(_ASM_LABEL(y))
#define ASEND(y) _END(_ASM_LABEL(y))
#define ASEEND(y)
#define ASMSTR .asciz

24
sys/libkern/arm/divsi3.S
View File

@ -51,11 +51,11 @@ ENTRY_NP(__modsi3)
RET
END(__modsi3)
#ifdef __ARM_EABI__
ENTRY_NP(__aeabi_uidiv)
ENTRY_NP(__aeabi_uidivmod)
#endif
ENTRY_NP(__udivsi3)
#ifdef __ARM_EABI__
EENTRY_NP(__aeabi_uidiv)
EENTRY_NP(__aeabi_uidivmod)
#endif
.L_udivide: /* r0 = r0 / r1; r1 = r0 % r1 */
eor r0, r1, r0
eor r1, r0, r1
@ -77,16 +77,16 @@ ENTRY_NP(__udivsi3)
mov r1, #0
RET
#ifdef __ARM_EABI__
END(__aeabi_uidiv)
END(__aeabi_uidivmod)
EEND(__aeabi_uidiv)
EEND(__aeabi_uidivmod)
#endif
END(__udivsi3)
#ifdef __ARM_EABI__
ENTRY_NP(__aeabi_idiv)
ENTRY_NP(__aeabi_idivmod)
#endif
ENTRY_NP(__divsi3)
#ifdef __ARM_EABI__
EENTRY_NP(__aeabi_idiv)
EENTRY_NP(__aeabi_idivmod)
#endif
.L_divide: /* r0 = r0 / r1; r1 = r0 % r1 */
eor r0, r1, r0
eor r1, r0, r1
@ -401,8 +401,8 @@ ENTRY_NP(__divsi3)
mov r0, r3
RET
#ifdef __ARM_EABI__
END(__aeabi_idiv)
END(__aeabi_idivmod)
EEND(__aeabi_idiv)
EEND(__aeabi_idivmod)
#endif
END(__divsi3)