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authorAl Viro <viro@ZenIV.linux.org.uk>2005-09-11 20:14:07 -0700
committerDavid S. Miller <davem@davemloft.net>2005-09-11 20:14:07 -0700
commit7caaeabb17758295edff9703c18a840073c5b8f4 (patch)
treea33a4bcc77be6077fd8b787380bf13a38828d211
parent357d596bd552ad157a906289ab13ea6ba7e66e3d (diff)
downloadop-kernel-dev-7caaeabb17758295edff9703c18a840073c5b8f4.zip
op-kernel-dev-7caaeabb17758295edff9703c18a840073c5b8f4.tar.gz
[SPARC]: Fix dot-symbol exporting for good.
From: Al Viro <viro@ZenIV.linux.org.uk> Instead of playing all of these hand-coded assembler aliasing games, just translate symbol names in the name space ".sym" to "_Sym" at module load time. Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--arch/sparc/kernel/module.c9
-rw-r--r--arch/sparc/kernel/sparc_ksyms.c31
-rw-r--r--arch/sparc/lib/mul.S2
-rw-r--r--arch/sparc/lib/rem.S2
-rw-r--r--arch/sparc/lib/sdiv.S2
-rw-r--r--arch/sparc/lib/udiv.S2
-rw-r--r--arch/sparc/lib/umul.S2
-rw-r--r--arch/sparc/lib/urem.S2
-rw-r--r--scripts/mod/modpost.c6
9 files changed, 36 insertions, 22 deletions
diff --git a/arch/sparc/kernel/module.c b/arch/sparc/kernel/module.c
index 7931d6f..787d5f1 100644
--- a/arch/sparc/kernel/module.c
+++ b/arch/sparc/kernel/module.c
@@ -10,6 +10,7 @@
#include <linux/vmalloc.h>
#include <linux/fs.h>
#include <linux/string.h>
+#include <linux/ctype.h>
void *module_alloc(unsigned long size)
{
@@ -37,7 +38,7 @@ void module_free(struct module *mod, void *module_region)
}
/* Make generic code ignore STT_REGISTER dummy undefined symbols,
- * and replace references to .func with func as in ppc64's dedotify.
+ * and replace references to .func with _Func
*/
int module_frob_arch_sections(Elf_Ehdr *hdr,
Elf_Shdr *sechdrs,
@@ -64,8 +65,10 @@ int module_frob_arch_sections(Elf_Ehdr *hdr,
sym[i].st_shndx = SHN_ABS;
else {
char *name = strtab + sym[i].st_name;
- if (name[0] == '.')
- memmove(name, name+1, strlen(name));
+ if (name[0] == '.') {
+ name[0] = '_';
+ name[1] = toupper(name[1]);
+ }
}
}
}
diff --git a/arch/sparc/kernel/sparc_ksyms.c b/arch/sparc/kernel/sparc_ksyms.c
index f848093..1c8fd0f 100644
--- a/arch/sparc/kernel/sparc_ksyms.c
+++ b/arch/sparc/kernel/sparc_ksyms.c
@@ -97,19 +97,12 @@ extern void ___rw_write_enter(void);
/* Alias functions whose names begin with "." and export the aliases.
* The module references will be fixed up by module_frob_arch_sections.
*/
-#define DOT_ALIAS2(__ret, __x, __arg1, __arg2) \
- extern __ret __x(__arg1, __arg2); \
- asm(".weak " #__x);\
- asm(#__x "=." #__x);
-
-DOT_ALIAS2(int, div, int, int)
-DOT_ALIAS2(int, mul, int, int)
-DOT_ALIAS2(int, rem, int, int)
-DOT_ALIAS2(unsigned, udiv, unsigned, unsigned)
-DOT_ALIAS2(unsigned, umul, unsigned, unsigned)
-DOT_ALIAS2(unsigned, urem, unsigned, unsigned)
-
-#undef DOT_ALIAS2
+extern int _Div(int, int);
+extern int _Mul(int, int);
+extern int _Rem(int, int);
+extern unsigned _Udiv(unsigned, unsigned);
+extern unsigned _Umul(unsigned, unsigned);
+extern unsigned _Urem(unsigned, unsigned);
/* used by various drivers */
EXPORT_SYMBOL(sparc_cpu_model);
@@ -320,12 +313,12 @@ EXPORT_SYMBOL(__lshrdi3);
EXPORT_SYMBOL(__muldi3);
EXPORT_SYMBOL(__divdi3);
-EXPORT_SYMBOL(rem);
-EXPORT_SYMBOL(urem);
-EXPORT_SYMBOL(mul);
-EXPORT_SYMBOL(umul);
-EXPORT_SYMBOL(div);
-EXPORT_SYMBOL(udiv);
+EXPORT_SYMBOL(_Rem);
+EXPORT_SYMBOL(_Urem);
+EXPORT_SYMBOL(_Mul);
+EXPORT_SYMBOL(_Umul);
+EXPORT_SYMBOL(_Div);
+EXPORT_SYMBOL(_Udiv);
#ifdef CONFIG_DEBUG_BUGVERBOSE
EXPORT_SYMBOL(do_BUG);
diff --git a/arch/sparc/lib/mul.S b/arch/sparc/lib/mul.S
index 83dffbc..da69356 100644
--- a/arch/sparc/lib/mul.S
+++ b/arch/sparc/lib/mul.S
@@ -16,7 +16,9 @@
*/
.globl .mul
+ .globl _Mul
.mul:
+_Mul: /* needed for export */
mov %o0, %y ! multiplier -> Y
andncc %o0, 0xfff, %g0 ! test bits 12..31
be Lmul_shortway ! if zero, can do it the short way
diff --git a/arch/sparc/lib/rem.S b/arch/sparc/lib/rem.S
index 4450814..bf015a9 100644
--- a/arch/sparc/lib/rem.S
+++ b/arch/sparc/lib/rem.S
@@ -43,7 +43,9 @@
.globl .rem
+ .globl _Rem
.rem:
+_Rem: /* needed for export */
! compute sign of result; if neither is negative, no problem
orcc %o1, %o0, %g0 ! either negative?
bge 2f ! no, go do the divide
diff --git a/arch/sparc/lib/sdiv.S b/arch/sparc/lib/sdiv.S
index e0ad80b..af94516 100644
--- a/arch/sparc/lib/sdiv.S
+++ b/arch/sparc/lib/sdiv.S
@@ -43,7 +43,9 @@
.globl .div
+ .globl _Div
.div:
+_Div: /* needed for export */
! compute sign of result; if neither is negative, no problem
orcc %o1, %o0, %g0 ! either negative?
bge 2f ! no, go do the divide
diff --git a/arch/sparc/lib/udiv.S b/arch/sparc/lib/udiv.S
index 2abfc6b..169e01d 100644
--- a/arch/sparc/lib/udiv.S
+++ b/arch/sparc/lib/udiv.S
@@ -43,7 +43,9 @@
.globl .udiv
+ .globl _Udiv
.udiv:
+_Udiv: /* needed for export */
! Ready to divide. Compute size of quotient; scale comparand.
orcc %o1, %g0, %o5
diff --git a/arch/sparc/lib/umul.S b/arch/sparc/lib/umul.S
index a784720..f0e5b20 100644
--- a/arch/sparc/lib/umul.S
+++ b/arch/sparc/lib/umul.S
@@ -21,7 +21,9 @@
*/
.globl .umul
+ .globl _Umul
.umul:
+_Umul: /* needed for export */
or %o0, %o1, %o4
mov %o0, %y ! multiplier -> Y
diff --git a/arch/sparc/lib/urem.S b/arch/sparc/lib/urem.S
index ec7f0c5..6b92bdc 100644
--- a/arch/sparc/lib/urem.S
+++ b/arch/sparc/lib/urem.S
@@ -41,7 +41,9 @@
*/
.globl .urem
+ .globl _Urem
.urem:
+_Urem: /* needed for export */
! Ready to divide. Compute size of quotient; scale comparand.
orcc %o1, %g0, %o5
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 09ffca5..3bed09e 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -370,6 +370,12 @@ handle_modversions(struct module *mod, struct elf_info *info,
/* Ignore register directives. */
if (ELF_ST_TYPE(sym->st_info) == STT_SPARC_REGISTER)
break;
+ if (symname[0] == '.') {
+ char *munged = strdup(symname);
+ munged[0] = '_';
+ munged[1] = toupper(munged[1]);
+ symname = munged;
+ }
}
#endif
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