Re: [Gcl-devel] Re: Flushing the d-cache (was Re: BFD relocations)
Greetings! The function is fasload. Here is the assembly. Note the
swi call, followed shortly by a call to call_init. This function
basically jumps to the initial address of the newly loaded and
relocated object.
Again, as is this is working about at the 95% level. SIGILL received
toward end of maxima tests, at a point which gdb reports should be no
problem, indicating a likely cache-flushing issue.
Thanks for your help!
=============================================================================
fasload:
.stabn 68,0,168,.LM40-fasload
.LM40:
@ args = 0, pretend = 0, frame = 344
@ frame_needed = 1, current_function_anonymous_args = 0
mov ip, sp
stmfd sp!, {r4, fp, ip, lr, pc}
sub fp, ip, #4
sub sp, sp, #352
str r0, [fp, #-20]
.LBB2:
.stabn 68,0,172,.LM41-fasload
.LM41:
mvn r3, #0
str r3, [fp, #-284]
.stabn 68,0,174,.LM42-fasload
.LM42:
mov r3, #0
str r3, [fp, #-292]
str r3, [fp, #-296]
.stabn 68,0,175,.LM43-fasload
.LM43:
ldr r3, .L88
ldr r3, [r3, #0]
str r3, [fp, #-300]
.stabn 68,0,176,.LM44-fasload
.LM44:
ldr r3, .L88+4
ldr r3, [r3, #0]
str r3, [fp, #-304]
.stabn 68,0,187,.LM45-fasload
.LM45:
ldr r3, .L88+8
ldr r3, [r3, #0]
cmp r3, #0
bne .L50
.stabn 68,0,189,.LM46-fasload
.LM46:
mov r2, #1
ldr r3, .L88+8
str r2, [r3, #0]
.stabn 68,0,191,.LM47-fasload
.LM47:
mov r2, #16
ldr r3, .L88+12
strb r2, [r3, #0]
.stabn 68,0,192,.LM48-fasload
.LM48:
mov r2, #0
strb r2, [r3, #28]
.stabn 68,0,193,.LM49-fasload
.LM49:
mov r2, #0
str r2, [r3, #12]
str r2, [r3, #8]
.stabn 68,0,195,.LM50-fasload
.LM50:
ldr r2, .L88+16
ldr r3, .L88+20
str r2, [r3, #0]
.stabn 68,0,196,.LM51-fasload
.LM51:
ldr r2, .L88+24
str r2, [r3, #4]
.stabn 68,0,197,.LM52-fasload
.LM52:
ldr r2, .L88+28
str r2, [r3, #8]
.stabn 68,0,198,.LM53-fasload
.LM53:
ldr r2, .L88+32
str r2, [r3, #12]
.stabn 68,0,199,.LM54-fasload
.LM54:
ldr r2, .L88+36
str r2, [r3, #16]
.stabn 68,0,200,.LM55-fasload
.LM55:
ldr r2, .L88+40
str r2, [r3, #20]
.stabn 68,0,201,.LM56-fasload
.LM56:
ldr r2, .L88+44
str r2, [r3, #24]
.stabn 68,0,202,.LM57-fasload
.LM57:
ldr r2, .L88+48
str r2, [r3, #28]
.stabn 68,0,203,.LM58-fasload
.LM58:
ldr r2, .L88+52
str r2, [r3, #32]
.stabn 68,0,204,.LM59-fasload
.LM59:
ldr r2, .L88+56
str r2, [r3, #36]
.stabn 68,0,205,.LM60-fasload
.LM60:
ldr r2, .L88+60
str r2, [r3, #40]
.stabn 68,0,206,.LM61-fasload
.LM61:
ldr r2, .L88+20
ldr r3, .L88+64
str r2, [r3, #0]
.stabn 68,0,208,.LM62-fasload
.LM62:
mov r2, #1
ldr r3, .L88+68
str r2, [r3, #4]
.L50:
.stabn 68,0,212,.LM63-fasload
.LM63:
ldr r0, [fp, #-20]
sub r1, fp, #280
bl coerce_to_filename
.stabn 68,0,214,.LM64-fasload
.LM64:
sub r0, fp, #280
mov r1, #0
bl bfd_openr
mov r3, r0
str r3, [fp, #-308]
ldr r3, [fp, #-308]
cmp r3, #0
bne .L51
.stabn 68,0,215,.LM65-fasload
.LM65:
ldr r0, .L88+72
bl FEerror
.L51:
.stabn 68,0,216,.LM66-fasload
.LM66:
ldr r0, [fp, #-308]
mov r1, #1
bl bfd_check_format
mov r3, r0
cmp r3, #0
bne .L52
.stabn 68,0,217,.LM67-fasload
.LM67:
ldr r0, .L88+76
bl FEerror
.L52:
.stabn 68,0,219,.LM68-fasload
.LM68:
mov r3, #0
str r3, [fp, #-292]
.stabn 68,0,220,.LM69-fasload
.LM69:
ldr r3, [fp, #-308]
ldr r3, [r3, #84]
str r3, [fp, #-324]
.L53:
ldr r3, [fp, #-324]
cmp r3, #0
bne .L56
b .L54
.L56:
.stabn 68,0,222,.LM70-fasload
.LM70:
ldr r2, [fp, #-308]
ldr r3, [fp, #-324]
str r2, [r3, #116]
.stabn 68,0,223,.LM71-fasload
.LM71:
ldr r2, [fp, #-324]
str r2, [fp, #-348]
ldr r3, [fp, #-324]
ldr r3, [r3, #16]
and r3, r3, #1
cmp r3, #0
bne .L57
ldr r3, [fp, #-308]
ldr r3, [r3, #84]
str r3, [fp, #-352]
b .L58
.L57:
ldr r3, [fp, #-324]
str r3, [fp, #-352]
.L58:
ldr r3, [fp, #-352]
ldr r2, [fp, #-348]
str r3, [r2, #44]
.stabn 68,0,224,.LM72-fasload
.LM72:
mov r2, #0
ldr r3, [fp, #-324]
str r2, [r3, #40]
.stabn 68,0,226,.LM73-fasload
.LM73:
ldr r3, [fp, #-324]
ldr r3, [r3, #16]
and r3, r3, #1
cmp r3, #0
bne .L59
.stabn 68,0,227,.LM74-fasload
.LM74:
b .L55
.L59:
.stabn 68,0,229,.LM75-fasload
.LM75:
ldr r3, [fp, #-324]
ldr r2, [r3, #48]
ldr r3, [fp, #-296]
cmp r3, r2
bcs .L60
.stabn 68,0,230,.LM76-fasload
.LM76:
ldr r3, [fp, #-324]
ldr r3, [r3, #48]
str r3, [fp, #-296]
.L60:
.stabn 68,0,232,.LM77-fasload
.LM77:
ldr r3, [fp, #-324]
ldr r2, [r3, #48]
mov r3, #1
mov r3, r3, asl r2
ldr r0, [fp, #-292]
mov r1, r3
bl round_up
mov r3, r0
str r3, [fp, #-292]
.stabn 68,0,234,.LM78-fasload
.LM78:
ldr r3, [fp, #-324]
ldr r2, [r3, #36]
ldr r3, [fp, #-292]
add r3, r3, r2
str r3, [fp, #-292]
.stabn 68,0,220,.LM79-fasload
.LM79:
.L55:
ldr r3, [fp, #-324]
ldr r3, [r3, #12]
str r3, [fp, #-324]
b .L53
.L54:
.stabn 68,0,237,.LM80-fasload
.LM80:
mov r2, #1
ldr r3, [fp, #-296]
mov r3, r2, asl r3
str r3, [fp, #-296]
.stabn 68,0,239,.LM81-fasload
.LM81:
mov r0, #27
bl alloc_object
mov r3, r0
str r3, [fp, #-288]
.stabn 68,0,240,.LM82-fasload
.LM82:
mov r2, #0
ldr r3, [fp, #-288]
str r2, [r3, #16]
.stabn 68,0,241,.LM83-fasload
.LM83:
ldr r3, [fp, #-288]
str r2, [r3, #4]
.stabn 68,0,242,.LM84-fasload
.LM84:
ldr r2, [fp, #-288]
str r2, [fp, #-356]
ldr r3, [fp, #-292]
str r3, [fp, #-360]
ldr r3, [fp, #-296]
cmp r3, #4
bls .L61
ldr r3, [fp, #-296]
ldr r2, [fp, #-360]
add r2, r2, r3
str r2, [fp, #-360]
.L61:
ldr r2, [fp, #-360]
ldr r3, [fp, #-356]
str r2, [r3, #8]
.stabn 68,0,244,.LM85-fasload
.LM85:
ldr r4, [fp, #-288]
ldr r3, [fp, #-288]
ldr r0, [r3, #8]
bl alloc_contblock
str r0, [r4, #4]
.stabn 68,0,245,.LM86-fasload
.LM86:
ldr r3, [fp, #-288]
ldr r3, [r3, #4]
str r3, [fp, #-332]
str r3, [fp, #-328]
.stabn 68,0,247,.LM87-fasload
.LM87:
ldr r0, [fp, #-332]
ldr r1, [fp, #-296]
bl round_up
mov r3, r0
str r3, [fp, #-332]
.stabn 68,0,248,.LM88-fasload
.LM88:
ldr r2, [fp, #-332]
ldr r3, [fp, #-328]
rsb r2, r3, r2
ldr r3, [fp, #-288]
ldr r3, [r3, #8]
rsb r2, r2, r3
ldr r3, [fp, #-288]
str r2, [r3, #8]
.stabn 68,0,249,.LM89-fasload
.LM89:
ldr r2, [fp, #-332]
ldr r3, [fp, #-288]
str r2, [r3, #4]
.stabn 68,0,251,.LM90-fasload
.LM90:
ldr r3, [fp, #-288]
ldr r0, [r3, #4]
mov r1, #0
ldr r3, [fp, #-288]
ldr r2, [r3, #8]
bl memset
.stabn 68,0,253,.LM91-fasload
.LM91:
ldr r3, [fp, #-332]
str r3, [fp, #-336]
ldr r3, [fp, #-308]
ldr r3, [r3, #84]
str r3, [fp, #-324]
.L62:
ldr r3, [fp, #-324]
cmp r3, #0
bne .L65
b .L63
.L65:
.stabn 68,0,255,.LM92-fasload
.LM92:
ldr r3, [fp, #-324]
ldr r3, [r3, #16]
and r3, r3, #1
cmp r3, #0
bne .L66
.stabn 68,0,256,.LM93-fasload
.LM93:
b .L64
.L66:
.stabn 68,0,258,.LM94-fasload
.LM94:
ldr r3, [fp, #-324]
ldr r2, [r3, #48]
mov r3, #1
mov r3, r3, asl r2
ldr r0, [fp, #-336]
mov r1, r3
bl round_up
mov r3, r0
str r3, [fp, #-336]
.stabn 68,0,259,.LM95-fasload
.LM95:
ldr r3, [fp, #-324]
ldr r2, [r3, #44]
ldr r3, [fp, #-336]
str r3, [r2, #24]
.stabn 68,0,260,.LM96-fasload
.LM96:
ldr r3, [fp, #-324]
ldr r2, [r3, #36]
ldr r3, [fp, #-336]
add r3, r3, r2
str r3, [fp, #-336]
.stabn 68,0,253,.LM97-fasload
.LM97:
.L64:
ldr r3, [fp, #-324]
ldr r3, [r3, #12]
str r3, [fp, #-324]
b .L62
.L63:
.stabn 68,0,264,.LM98-fasload
.LM98:
ldr r3, [fp, #-308]
ldr r3, [r3, #4]
ldr r3, [r3, #244]
ldr r0, [fp, #-308]
mov lr, pc
mov pc, r3
str r0, [fp, #-312]
.stabn 68,0,266,.LM99-fasload
.LM99:
ldr r3, [fp, #-312]
add r3, r3, #3
mov r3, r3, lsr #2
mov r3, r3, asl #2
rsb sp, r3, sp
add r3, sp, #8
str r3, [fp, #-320]
.stabn 68,0,267,.LM100-fasload
.LM100:
ldr r3, [fp, #-308]
ldr r3, [r3, #4]
ldr r3, [r3, #248]
ldr r0, [fp, #-308]
ldr r1, [fp, #-320]
mov lr, pc
mov pc, r3
str r0, [fp, #-316]
.stabn 68,0,269,.LM101-fasload
.LM101:
mov r3, #0
str r3, [fp, #-312]
.L69:
ldr r2, [fp, #-312]
ldr r3, [fp, #-316]
cmp r2, r3
bcc .L72
b .L70
.L72:
.LBB3:
.stabn 68,0,273,.LM102-fasload
.LM102:
ldr r3, [fp, #-312]
mov r2, r3, asl #2
ldr r3, [fp, #-320]
add r3, r2, r3
ldr r3, [r3, #0]
ldr r0, .L88+80
ldr r1, [r3, #4]
mov r2, #5
bl strncmp
mov r3, r0
cmp r3, #0
bne .L73
.stabn 68,0,274,.LM103-fasload
.LM103:
ldr r3, [fp, #-312]
mov r2, r3, asl #2
ldr r3, [fp, #-320]
add r3, r2, r3
ldr r3, [r3, #0]
ldr r3, [r3, #8]
str r3, [fp, #-284]
.stabn 68,0,275,.LM104-fasload
.LM104:
b .L71
.L73:
.stabn 68,0,278,.LM105-fasload
.LM105:
ldr r3, [fp, #-312]
mov r2, r3, asl #2
ldr r3, [fp, #-320]
add r3, r2, r3
ldr r2, [r3, #0]
mov r3, #1
str r3, [sp, #0]
ldr r3, .L88+64
ldr r0, [r3, #72]
ldr r1, [r2, #4]
mov r2, #0
mov r3, #0
bl bfd_link_hash_lookup
mov r3, r0
str r3, [fp, #-340]
ldr r3, [fp, #-340]
cmp r3, #0
bne .L74
.stabn 68,0,279,.LM106-fasload
.LM106:
b .L71
.L74:
.stabn 68,0,281,.LM107-fasload
.LM107:
ldr r3, [fp, #-340]
ldr r3, [r3, #12]
cmp r3, #3
beq .L75
.stabn 68,0,282,.LM108-fasload
.LM108:
ldr r0, .L88+84
bl FEerror
.L75:
.stabn 68,0,284,.LM109-fasload
.LM109:
ldr r3, [fp, #-340]
ldr r3, [r3, #24]
cmp r3, #0
beq .L76
.stabn 68,0,285,.LM110-fasload
.LM110:
ldr r3, [fp, #-312]
mov r2, r3, asl #2
ldr r3, [fp, #-320]
add r3, r2, r3
ldr r0, [r3, #0]
ldr r3, [fp, #-340]
ldr r1, [r3, #24]
ldr r3, [fp, #-340]
ldr r2, [r3, #20]
ldr r3, [r1, #24]
add r3, r2, r3
str r3, [r0, #8]
.stabn 68,0,286,.LM111-fasload
.LM111:
ldr r3, [fp, #-312]
mov r2, r3, asl #2
ldr r3, [fp, #-320]
add r3, r2, r3
ldr r1, [r3, #0]
ldr r3, [fp, #-312]
mov r2, r3, asl #2
ldr r3, [fp, #-320]
add r3, r2, r3
ldr r3, [r3, #0]
ldr r3, [r3, #12]
orr r3, r3, #128
str r3, [r1, #12]
b .L71
.L76:
.stabn 68,0,288,.LM112-fasload
.LM112:
ldr r0, .L88+88
bl FEerror
.LBE3:
.stabn 68,0,269,.LM113-fasload
.LM113:
.L71:
ldr r3, [fp, #-312]
add r3, r3, #1
str r3, [fp, #-312]
b .L69
.L70:
.stabn 68,0,292,.LM114-fasload
.LM114:
ldr r3, [fp, #-308]
ldr r3, [r3, #84]
str r3, [fp, #-324]
.L78:
ldr r3, [fp, #-324]
cmp r3, #0
bne .L81
b .L79
.L81:
.stabn 68,0,294,.LM115-fasload
.LM115:
ldr r3, [fp, #-324]
ldr r3, [r3, #16]
and r3, r3, #2
cmp r3, #0
bne .L82
.stabn 68,0,295,.LM116-fasload
.LM116:
b .L80
.L82:
.stabn 68,0,297,.LM117-fasload
.LM117:
ldr r2, [fp, #-324]
ldr r3, .L88+68
str r2, [r3, #16]
.stabn 68,0,301,.LM118-fasload
.LM118:
ldr r3, [fp, #-324]
ldr ip, [r3, #44]
mov r3, #0
str r3, [sp, #0]
ldr r3, [fp, #-320]
str r3, [sp, #4]
ldr r0, [fp, #-308]
ldr r1, .L88+64
ldr r2, .L88+68
ldr r3, [ip, #24]
bl bfd_get_relocated_section_contents
mov r3, r0
cmp r3, #0
bne .L80
.stabn 68,0,303,.LM119-fasload
.LM119:
ldr r0, .L88+92
bl FEerror
.stabn 68,0,292,.LM120-fasload
.LM120:
.L80:
ldr r3, [fp, #-324]
ldr r3, [r3, #12]
str r3, [fp, #-324]
b .L78
.L79:
.stabn 68,0,307,.LM121-fasload
.LM121:
ldr r3, [fp, #-308]
ldr r2, [r3, #8]
ldr r3, .L88+12
str r2, [r3, #4]
.stabn 68,0,309,.LM122-fasload
.LM122:
ldr r0, [r3, #4]
bl feof
mov r3, r0
cmp r3, #0
beq .L84
.stabn 68,0,310,.LM123-fasload
.LM123:
mov r3, #0
str r3, [fp, #-24]
b .L85
.L84:
.stabn 68,0,312,.LM124-fasload
.LM124:
ldr r0, .L88+12
bl read_fasl_vector
mov r3, r0
str r3, [fp, #-24]
.L85:
.stabn 68,0,314,.LM125-fasload
.LM125:
ldr r0, [fp, #-308]
bl bfd_close
.LBB4:
.stabn 68,0,317,.LM126-fasload
.LM126:
ldr r3, [fp, #-288]
ldr r3, [r3, #4]
str r3, [fp, #-340]
ldr r3, [fp, #-288]
ldr r2, [r3, #8]
ldr r3, [fp, #-340]
add r3, r3, r2
str r3, [fp, #-344]
ldr r0, [fp, #-340]
ldr r1, [fp, #-344]
mov r2, #0
swi 0x9f0002 @ sys_cacheflush
.LBE4:
.stabn 68,0,320,.LM127-fasload
.LM127:
ldr r0, [fp, #-284]
ldr r1, [fp, #-288]
ldr r2, [fp, #-24]
mov r3, #0
bl call_init
.stabn 68,0,322,.LM128-fasload
.LM128:
ldr r2, [fp, #-300]
ldr r3, .L88
str r2, [r3, #0]
.stabn 68,0,323,.LM129-fasload
.LM129:
ldr r2, [fp, #-304]
ldr r3, .L88+4
str r2, [r3, #0]
.stabn 68,0,325,.LM130-fasload
.LM130:
ldr r3, .L88+96
ldr r0, [r3, #0]
bl symbol_value
mov r2, r0
ldr r3, .L88+100
cmp r2, r3
beq .L87
.stabn 68,0,326,.LM131-fasload
.LM131:
ldr r0, .L88+104
ldr r3, [fp, #-288]
ldr r1, [r3, #4]
bl printf
.L87:
.stabn 68,0,328,.LM132-fasload
.LM132:
ldr r3, [fp, #-288]
ldr r3, [r3, #8]
mov r0, r3
.LBE2:
.stabn 68,0,330,.LM133-fasload
.LM133:
ldmea fp, {r4, fp, sp, pc}
.L89:
.align 2
.L88:
.word vs_base
.word vs_top
.word nbfd.0
.word dum.1
.word madd_archive_element
.word link_callbacks.2
.word mmultiple_definition
.word mmultiple_common
.word madd_to_set
.word mconstructor
.word mwarning
.word mundefined_symbol
.word mreloc_overflow
.word mreloc_dangerous
.word munattached_reloc
.word mnotice
.word link_info
.word link_order.3
.word .LC3
.word .LC4
.word .LC7
.word .LC8
.word .LC9
.word .LC10
.word sLAload_verboseA
.word Cnil_body
.word .LC11
.Lfe13:
.size fasload,.Lfe13-fasload
.stabs "data:(63,6)",128,0,170,-24
.stabs "filename:(77,2)=ar(2,167);0;255;(0,2)",128,0,171,-280
.stabs "init_address:(0,1)",128,0,172,-284
.stabs "memory:(63,6)",128,0,173,-288
.stabs "current:(0,1)",128,0,174,-292
.stabs "max_align:(0,1)",128,0,174,-296
.stabs "old_vs_base:(63,23)",128,0,175,-300
.stabs "old_vs_top:(63,23)",128,0,176,-304
.stabs "nbfd:V(0,1)",40,0,177,nbfd.0
.stabs "b:(2,24)",128,0,178,-308
.stabs "u:(0,4)",128,0,179,-312
.stabs "v:(0,4)",128,0,179,-316
.stabs "q:(77,3)=*(2,225)",128,0,180,-320
.stabs "s:(5,6)",128,0,181,-324
.stabs "the_start:(2,46)",128,0,182,-328
.stabs "start_address:(2,46)",128,0,182,-332
.stabs "m:(2,46)",128,0,182,-336
.stabs "dum:V(63,8)",40,0,183,dum.1
.stabs "link_callbacks:V(5,17)",40,0,184,link_callbacks.2
.stabs "link_order:V(2,65)",40,0,185,link_order.3
.stabn 192,0,0,.LBB2-fasload
.stabs "h:(5,8)",128,0,271,-340
.stabn 192,0,0,.LBB3-fasload
.stabn 224,0,0,.LBE3-fasload
.stabs "v:(2,46)",128,0,317,-340
.stabs "ve:(2,46)",128,0,317,-344
.stabs "_beg:r(0,5)",64,0,317,0
.stabs "_end:r(0,5)",64,0,317,1
.stabs "_flg:r(0,5)",64,0,317,2
.stabn 192,0,0,.LBB4-fasload
.stabn 224,0,0,.LBE4-fasload
.stabn 224,0,0,.LBE2-fasload
.Lscope12:
.stabs "",36,0,0,.Lscope12-fasload
.stabs "sfasli.c",130,0,0,0
.data
.align 2
.LC12:
.ascii "Cannot open self\n\000"
.align 2
.LC13:
.ascii "I'm not an object\000"
.align 2
.LC14:
.ascii "Cannot make hash table\000"
.align 2
.LC15:
.ascii "Cannot add self symbols\n\000"
.align 2
.LC16:
.ascii "Cannot get self's symtab upper bound\000"
.align 2
.LC17:
.ascii "Cannot canonicalize self's symtab\000"
.align 2
.LC18:
.ascii "@@GLIBC\000"
.align 2
.LC19:
.ascii "Cannot make new hash entry\000"
.align 2
.LC20:
.ascii "Symbol is missing section\000"
.text
.align 2
.stabs "build_symbol_table_bfd:F(0,1)",36,0,31,build_symbol_table_bfd
.global build_symbol_table_bfd
.type build_symbol_table_bfd,function
=============================================================================
Philip Blundell <pb@nexus.co.uk> writes:
> On Mon, 2002-06-17 at 07:05, Camm Maguire wrote:
> > Indeed, this does appear to be what the sequence Daniel suggested so
> > successfully for ppc does:
> >
> > #define CLEAR_CACHE do {void *v=memory->cfd.cfd_start,*ve=v+memory->cfd.cfd_size; for (;v<ve;v+=32) asm __volatile__ ("dcbst 0,%0\n\tsync\n\ticbi 0,%0\n\tsync\n\tisync": : "r" (v) : "memory");} while(0)
> >
> > So I guess what I need to do is to try to collect the analogous
> > instructions on the other Debian architectures if possible.
> >
> > Philip and Andreas, the revisiion you so helpfully suggested for arm
> > alas still does not work, with the same symptoms. Can you please
> > point me to the arm versions if any of 'sync', i-cache invalidate, and
> > nop?
>
> There is no direct analogue on arm -- sys_cacheflush is the only
> interface that's provided for cache flushing. Obviously machine
> instructions to flush the cache do exist, but they vary from one
> cpu to another and can only be used in privileged mode.
>
> Mail me the output of "gcc -S" for your function and I'll have a look at
> it.
>
> p.
>
>
> _______________________________________________
> Gcl-devel mailing list
> Gcl-devel@gnu.org
> http://mail.gnu.org/mailman/listinfo/gcl-devel
>
>
--
Camm Maguire camm@enhanced.com
==========================================================================
"The earth is but one country, and mankind its citizens." -- Baha'u'llah
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