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Description: <short summary of the patch>
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TODO: Put a short summary on the line above and replace this paragraph
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385abae |
with a longer explanation of this change. Complete the meta-information
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with other relevant fields (see below for details). To make it easier, the
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information below has been extracted from the changelog. Adjust it or drop
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it.
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.
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gcl (2.6.12-76) unstable; urgency=medium
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.
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* Version_2_6_13pre66
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Author: Camm Maguire <camm@debian.org>
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---
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The information above should follow the Patch Tagging Guidelines, please
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385abae |
checkout http://dep.debian.net/deps/dep3/ to learn about the format. Here
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385abae |
are templates for supplementary fields that you might want to add:
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Origin: <vendor|upstream|other>, <url of original patch>
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Bug: <url in upstream bugtracker>
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Bug-Debian: https://bugs.debian.org/<bugnumber>
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Bug-Ubuntu: https://launchpad.net/bugs/<bugnumber>
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Forwarded: <no|not-needed|url proving that it has been forwarded>
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Reviewed-By: <name and email of someone who approved the patch>
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Last-Update: 2018-03-26
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--- gcl-2.6.12.orig/configure
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+++ gcl-2.6.12/configure
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@@ -4121,7 +4121,6 @@ $as_echo_n "checking working gprof... "
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s390*) enableval="no";;#mcount smashes float args in make_shortfloat 20180313
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sh4*) enableval="no";;
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ia64*) enableval="no";;
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- alpha*) enableval="no";;#write_stub currently depends on t12 set in call
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hppa*) enableval="no";;
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arm*) enableval="no";;#FIXME mcount compiled as a 24/22 bit reloc even with -mlong-calls, marginally accessible
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aarch64*) enableval="no";;#unreproducible buildd bug 20170824
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--- gcl-2.6.12.orig/configure.in
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+++ gcl-2.6.12/configure.in
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@@ -334,7 +334,6 @@ AC_ARG_ENABLE([gprof],[ --enable-gprof
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s390*) enableval="no";;#mcount smashes float args in make_shortfloat 20180313
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sh4*) enableval="no";;
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ia64*) enableval="no";;
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- alpha*) enableval="no";;#write_stub currently depends on t12 set in call
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hppa*) enableval="no";;
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arm*) enableval="no";;#FIXME mcount compiled as a 24/22 bit reloc even with -mlong-calls, marginally accessible
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aarch64*) enableval="no";;#unreproducible buildd bug 20170824
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--- gcl-2.6.12.orig/h/elf64_alpha_reloc.h
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+++ gcl-2.6.12/h/elf64_alpha_reloc.h
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@@ -1,14 +1,14 @@
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case R_ALPHA_GPDISP:
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- gotoff=(ul)(got+(a>>32)-1);
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+ gotoff=(ul)(got+HIGH(a)-1);
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s=gotoff-p;
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store_val(where,MASK(16),(s-(short)s)>>16);
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- store_val((void *)where+(a&MASK(32)),MASK(16),s);
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+ store_val((void *)where+LOW(a),MASK(16),s);
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break;
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case R_ALPHA_SREL32:
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store_val(where,MASK(32),s+a-p);
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break;
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case R_ALPHA_GPREL32:
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- store_val(where,MASK(32),s+a-gotoff);
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+ store_val(where,MASK(32),s+LOW(a)-(ul)(got+HIGH(a)-1));
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break;
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case R_ALPHA_LITUSE:
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case R_ALPHA_HINT:
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@@ -20,8 +20,8 @@
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store_val(where,MASK(32),s+a);
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break;
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case R_ALPHA_LITERAL:
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- s+=a&MASK(32);
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- a=(a>>32)-1;
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+ s+=LOW(a);
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+ a=HIGH(a)-1;
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if (s>=ggot1 && s
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massert(!write_stub(s,got+a));
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} else
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--- gcl-2.6.12.orig/h/elf64_alpha_reloc_special.h
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+++ gcl-2.6.12/h/elf64_alpha_reloc_special.h
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@@ -1,10 +1,32 @@
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-static ul ggot1,ggote,gotoff;
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+static ul ggot1,ggote,gotoff,mcount;
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+
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+static int
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+write_stub_mcount(ul s,ul *gote) {
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+
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+ unsigned int *goti;
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+
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+ /*mcount calls written using at register, address not available in stub*/
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+ /*mcount guaranteed to be within 32bits*/
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+ *gote=(ul)(goti=(void *)(gote+1));
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+ *goti++=(0x9<<26)|(0x1b<<21)|(0x1f<<16)|((s-(short)s)>>16); /*ldah t12,(symhigh)(zero)*/
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+ *goti++=(0x8<<26)|(0x1b<<21)|(0x1b<<16)|(s&MASK(16)); /*lda t12,(symlow)(t12)*/
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+ *goti++=(0x29<<26)|(0x1b<<21)|(0x1b<<16)|0; /*ldq t12,0(t12)*/
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+ *goti++=(0x1a<<26)|(0x1f<<21)|(0x1b<<16)|0x4000; /*jsr zero,(t12),$pc+4*/
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+ *goti++=0; /*halt*/
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+ *goti++=0; /*halt*/
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+
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+ return 0;
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+
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+}
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static int
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write_stub(ul s,ul *gote) {
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unsigned int *goti;
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+ if (s==mcount)
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+ return write_stub_mcount(mcount,gote);
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+
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*gote=(ul)(goti=(void *)(gote+2));
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*++gote=s;
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*goti++=(0x29<<26)|(0x1b<<21)|(0x1b<<16)|0xfff8; /*ldq t12,-8(t12)*/
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@@ -35,15 +57,19 @@ static int
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find_special_params(void *v,Shdr *sec1,Shdr *sece,const char *sn,
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const char *st1,Sym *ds1,Sym *dse,Sym *sym1,Sym *syme) {
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+ Sym *sym;
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Shdr *sec;
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Rela *r;
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- void *ve;
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+ void *ve,*dst1;
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massert((sec=get_section(".got",sec1,sece,sn)));
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ggot1=sec->sh_addr;
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ggote=ggot1+sec->sh_size;
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+ massert(sec=get_section(".dynstr",sec1,sece,sn));/*FIXME pass as parameter*/
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+ dst1=v+sec->sh_offset;
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+
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massert((sec=get_section(".rel.dyn",sec1,sece,sn))||
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(sec=get_section(".rela.dyn",sec1,sece,sn)));
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@@ -51,13 +77,20 @@ find_special_params(void *v,Shdr *sec1,S
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ve=v+sec->sh_size;
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for (r=v;v<ve;v+=sec->sh_entsize,r=v)
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- if (ELF_R_TYPE(r->r_info) && !ds1[ELF_R_SYM(r->r_info)].st_value)
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- ds1[ELF_R_SYM(r->r_info)].st_value=r->r_offset;
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+ if (ELF_R_TYPE(r->r_info) && !(sym=ds1+ELF_R_SYM(r->r_info))->st_value) {
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+ sym->st_value=r->r_offset;
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+ if (!strncmp("_mcount",dst1+sym->st_name,7))
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+ mcount=sym->st_value;
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+ }
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return 0;
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}
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+#define HIGH(a_) ((a_)>>32)
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+#define LOW(a_) ((a_)&MASK(32))
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+#define SET_HIGH(a_,b_) ({ul _a=(a_);(a_)=((b_)<<32)|LOW(_a);})
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+
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static int
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label_got_symbols(void *v1,Shdr *sec1,Shdr *sece,Sym *sym1,Sym *syme,const char *st1,const char *sn,ul *gs) {
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385abae |
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385abae |
@@ -67,12 +100,18 @@ label_got_symbols(void *v1,Shdr *sec1,Sh
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void *v,*ve;
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ul q,gotp;
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385abae |
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- for (sym=sym1;sym
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- sym->st_size=0;
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385abae |
+ for (sym=sym1;sym
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+ massert(!HIGH(sym->st_value));
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+ massert(!HIGH(sym->st_size));
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385abae |
+ }
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385abae |
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for (*gs=gotp=0,sec=sec1;sec
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385abae |
if (sec->sh_type==SHT_RELA)
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385abae |
- for (v=v1+sec->sh_offset,ve=v+sec->sh_size,r=v;v<ve;v+=sec->sh_entsize,r=v)
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+ for (v=v1+sec->sh_offset,ve=v+sec->sh_size,r=v;v<ve;v+=sec->sh_entsize,r=v) {
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385abae |
+
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385abae |
+ if (HIGH(r->r_addend))
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385abae |
+ fprintf(stderr,"zeroing high addend %lx\n",HIGH(r->r_addend));/*never reached fix(Cnil) code, to be eliminated*/
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385abae |
+ SET_HIGH(r->r_addend,0UL);
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385abae |
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385abae |
switch(ELF_R_TYPE(r->r_info)) {
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385abae |
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385abae |
@@ -81,49 +120,60 @@ label_got_symbols(void *v1,Shdr *sec1,Sh
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385abae |
if (!r->r_addend) {
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385abae |
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385abae |
sym=sym1+ELF_R_SYM(r->r_info);
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385abae |
- q=(gotp-sym->st_size)*sizeof(*gs);
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385abae |
+ q=(HIGH(sym->st_size)-gotp)*sizeof(*gs);
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385abae |
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385abae |
- if (!sym->st_size || q!=(short)q) {
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385abae |
- sym->st_size=++*gs;
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385abae |
+ if (!HIGH(sym->st_size) || q!=(short)q) {/*new cached got entry if first or out of range*/
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385abae |
+ SET_HIGH(sym->st_size,++*gs);
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385abae |
massert(!make_got_room_for_stub(sec1,sece,sym,st1,gs));
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385abae |
}
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385abae |
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385abae |
- q=sym->st_size;
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385abae |
+ q=HIGH(sym->st_size);
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385abae |
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385abae |
} else
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385abae |
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385abae |
q=++*gs;
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385abae |
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385abae |
- if (r->r_addend>>32)
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385abae |
- fprintf(stderr,"zeroing high addend %lx\n",r->r_addend>>32);
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385abae |
- r->r_addend&=0xffffffff;
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385abae |
- massert((q&0xffffffff)==q);
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385abae |
- r->r_addend|=(q<<32);
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385abae |
+ SET_HIGH(r->r_addend,q);
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385abae |
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385abae |
- q=(q-gotp)*sizeof(*gs);
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385abae |
+ q=(q-gotp)*sizeof(*gs);/*check 16bit range gprel address in range*/
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385abae |
massert(q==(short)q);
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385abae |
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385abae |
break;
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385abae |
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385abae |
case R_ALPHA_GPDISP:
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385abae |
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385abae |
- for (sym=fsym;sym<syme && (sym->st_shndx!=1 || sym->st_value!=r->r_offset);sym++);
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385abae |
+ for (sym=fsym;sym<syme && (sym->st_shndx!=1 || LOW(sym->st_value)!=r->r_offset);sym++);/*ordered search*/
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385abae |
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385abae |
if (sym
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385abae |
fsym=sym;
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385abae |
- gotp=*gs+1;
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385abae |
+ SET_HIGH(fsym->st_value,gotp=*gs+1);
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385abae |
}
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385abae |
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385abae |
- if (r->r_addend>>32)
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385abae |
- fprintf(stderr,"zeroing high addend %lx\n",r->r_addend>>32);
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385abae |
- r->r_addend&=0xffffffff;
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385abae |
- massert((gotp&0xffffffff)==gotp);
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385abae |
- r->r_addend|=(gotp<<32);
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385abae |
+ SET_HIGH(r->r_addend,gotp);
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385abae |
+
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385abae |
+ break;
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385abae |
+
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385abae |
+ case R_ALPHA_GPREL32:
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385abae |
+
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385abae |
+ q=LOW(sym1[ELF_R_SYM(r->r_info)].st_value)+r->r_addend;
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385abae |
+
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385abae |
+ /*unordered search*/
|
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385abae |
+ for (sym=sym1;sym<syme && (sym->st_shndx!=1 || LOW(sym->st_value)>q || LOW(sym->st_value)+LOW(sym->st_size)
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385abae |
+ massert(sym
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385abae |
+
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385abae |
+ SET_HIGH(r->r_addend,HIGH(sym->st_value));
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385abae |
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385abae |
break;
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385abae |
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385abae |
}
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385abae |
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385abae |
+ }
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385abae |
+
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385abae |
+ for (sym=sym1;sym
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385abae |
+ SET_HIGH(sym->st_value,0UL);
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385abae |
+ SET_HIGH(sym->st_size,0UL);
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385abae |
+ }
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385abae |
+
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385abae |
return 0;
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385abae |
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385abae |
}
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