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2004-04-09 Ralf Corsepius <ralf_corsepius@rtems.org>

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* cpu_asm.S: Convert asm comments to C-comments to prevent gcc-3.4.0pre
	from choking on them.
This commit is contained in:
Ralf Corsepius
2004-04-09 07:14:20 +00:00
parent f17679cfa0
commit f4630e9d01
2 changed files with 59 additions and 54 deletions
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cpukit/score/cpu/i386/ChangeLog
+5
View File
@@ -1,3 +1,8 @@
2004-04-09 Ralf Corsepius <ralf_corsepius@rtems.org>
* cpu_asm.S: Convert asm comments to C-comments to prevent gcc-3.4.0pre
from choking on them.
2004-04-06 Ralf Corsepius <ralf_corsepius@rtems.org>
* configure.ac: Remove (Merged into $(top_srcdir)/configure.ac).
cpukit/score/cpu/i386/cpu_asm.S
+54 -54
View File
@@ -38,29 +38,29 @@
.p2align 1
PUBLIC (_CPU_Context_switch)
.set RUNCONTEXT_ARG, 4 # save context argument
.set HEIRCONTEXT_ARG, 8 # restore context argument
.set RUNCONTEXT_ARG, 4 /* save context argument */
.set HEIRCONTEXT_ARG, 8 /* restore context argument */
SYM (_CPU_Context_switch):
movl RUNCONTEXT_ARG(esp),eax # eax = running threads context
pushf # push eflags
popl REG_EFLAGS(eax) # save eflags
movl esp,REG_ESP(eax) # save stack pointer
movl ebp,REG_EBP(eax) # save base pointer
movl ebx,REG_EBX(eax) # save ebx
movl esi,REG_ESI(eax) # save source register
movl edi,REG_EDI(eax) # save destination register
movl RUNCONTEXT_ARG(esp),eax /* eax = running threads context */
pushf /* push eflags */
popl REG_EFLAGS(eax) /* save eflags */
movl esp,REG_ESP(eax) /* save stack pointer */
movl ebp,REG_EBP(eax) /* save base pointer */
movl ebx,REG_EBX(eax) /* save ebx */
movl esi,REG_ESI(eax) /* save source register */
movl edi,REG_EDI(eax) /* save destination register */
movl HEIRCONTEXT_ARG(esp),eax # eax = heir threads context
movl HEIRCONTEXT_ARG(esp),eax /* eax = heir threads context */
restore:
pushl REG_EFLAGS(eax) # push eflags
popf # restore eflags
movl REG_ESP(eax),esp # restore stack pointer
movl REG_EBP(eax),ebp # restore base pointer
movl REG_EBX(eax),ebx # restore ebx
movl REG_ESI(eax),esi # restore source register
movl REG_EDI(eax),edi # restore destination register
pushl REG_EFLAGS(eax) /* push eflags */
popf /* restore eflags */
movl REG_ESP(eax),esp /* restore stack pointer */
movl REG_EBP(eax),ebp /* restore base pointer */
movl REG_EBX(eax),ebx /* restore ebx */
movl REG_ESI(eax),esi /* restore source register */
movl REG_EDI(eax),edi /* restore destination register */
ret
/*
@@ -75,11 +75,11 @@ restore:
PUBLIC (_CPU_Context_restore)
.set NEWCONTEXT_ARG, 4 # context to restore argument
.set NEWCONTEXT_ARG, 4 /* context to restore argument */
SYM (_CPU_Context_restore):
movl NEWCONTEXT_ARG(esp),eax # eax = running threads context
movl NEWCONTEXT_ARG(esp),eax /* eax = running threads context */
jmp restore
/*PAGE
@@ -90,33 +90,33 @@ SYM (_CPU_Context_restore):
* the built-in coprocessor or the i80486 or compatible.
*/
.set FPCONTEXT_ARG, 4 # FP context argument
.set FPCONTEXT_ARG, 4 /* FP context argument */
.p2align 1
PUBLIC (_CPU_Context_save_fp)
SYM (_CPU_Context_save_fp):
movl FPCONTEXT_ARG(esp),eax # eax = &ptr to FP context area
movl (eax),eax # eax = FP context area
fsave (eax) # save FP context
movl FPCONTEXT_ARG(esp),eax /* eax = &ptr to FP context area */
movl (eax),eax /* eax = FP context area */
fsave (eax) /* save FP context */
ret
.p2align 1
PUBLIC (_CPU_Context_restore_fp)
SYM (_CPU_Context_restore_fp):
movl FPCONTEXT_ARG(esp),eax # eax = &ptr to FP context area
movl (eax),eax # eax = FP context area
frstor (eax) # restore FP context
movl FPCONTEXT_ARG(esp),eax /* eax = &ptr to FP context area */
movl (eax),eax /* eax = FP context area */
frstor (eax) /* restore FP context */
ret
PUBLIC (_Exception_Handler)
SYM (_Exception_Handler):
pusha # Push general purpose registers
pushl esp # Push exception frame address
movl _currentExcHandler, eax # Call function storead in _currentExcHandler
pusha /* Push general purpose registers */
pushl esp /* Push exception frame address */
movl _currentExcHandler, eax /* Call function storead in _currentExcHandler */
call * eax
addl $4, esp
popa # restore general purpose registers
addl $8, esp # skill vector number and faultCode
popa /* restore general purpose registers */
addl $8, esp /* skill vector number and faultCode */
iret
#define DISTINCT_EXCEPTION_WITH_FAULTCODE_ENTRY(_vector) \
@@ -224,18 +224,18 @@ DISTINCT_EXCEPTION_WITH_FAULTCODE_ENTRY (18)
SYM (i386_Logical_to_physical):
xorl eax,eax # clear eax
movzwl SEGMENT_ARG(esp),ecx # ecx = segment value
xorl eax,eax /* clear eax */
movzwl SEGMENT_ARG(esp),ecx /* ecx = segment value */
movl $ SYM (_Global_descriptor_table),edx
# edx = address of our GDT
addl ecx,edx # edx = address of desired entry
movb 7(edx),ah # ah = base 31:24
movb 4(edx),al # al = base 23:16
shll $16,eax # move ax into correct bits
movw 2(edx),ax # ax = base 0:15
movl ADDRESS_ARG(esp),ecx # ecx = address to convert
addl eax,ecx # ecx = physical address equivalent
movl ecx,eax # eax = ecx
/* edx = address of our GDT */
addl ecx,edx /* edx = address of desired entry */
movb 7(edx),ah /* ah = base 31:24 */
movb 4(edx),al /* al = base 23:16 */
shll $16,eax /* move ax into correct bits */
movw 2(edx),ax /* ax = base 0:15 */
movl ADDRESS_ARG(esp),ecx /* ecx = address to convert */
addl eax,ecx /* ecx = physical address equivalent */
movl ecx,eax /* eax = ecx */
ret
/*
@@ -255,18 +255,18 @@ SYM (i386_Logical_to_physical):
PUBLIC (i386_Physical_to_logical)
SYM (i386_Physical_to_logical):
xorl eax,eax # clear eax
movzwl SEGMENT_ARG(esp),ecx # ecx = segment value
xorl eax,eax /* clear eax */
movzwl SEGMENT_ARG(esp),ecx /* ecx = segment value */
movl $ SYM (_Global_descriptor_table),edx
# edx = address of our GDT
addl ecx,edx # edx = address of desired entry
movb 7(edx),ah # ah = base 31:24
movb 4(edx),al # al = base 23:16
shll $16,eax # move ax into correct bits
movw 2(edx),ax # ax = base 0:15
movl ADDRESS_ARG(esp),ecx # ecx = address to convert
subl eax,ecx # ecx = logical address equivalent
movl ecx,eax # eax = ecx
/* edx = address of our GDT */
addl ecx,edx /* edx = address of desired entry */
movb 7(edx),ah /* ah = base 31:24 */
movb 4(edx),al /* al = base 23:16 */
shll $16,eax /* move ax into correct bits */
movw 2(edx),ax /* ax = base 0:15 */
movl ADDRESS_ARG(esp),ecx /* ecx = address to convert */
subl eax,ecx /* ecx = logical address equivalent */
movl ecx,eax /* eax = ecx */
ret
END_CODE