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* elf32-spu.c (struct spu_link_hash_table): Add fromelem_size_log2.
	(spu_elf_setup): Initialize it.
	(spu_elf_size_stubs): Move .ovtab into .bss for software i-cache.
	Update to new-sytle cache manager data structures.
	(spu_elf_build_stubs): Generate new-style cache manager data
	structures and symbols.
	(spu_elf_auto_overlay): Update size computation.

ld/testsuite/
	* ld-spu/icache1.d: Update all addresses to accomodate icache
	buffer shifted down 0x800 bytes.
This commit is contained in:
Ulrich Weigand 2009-05-14 16:04:02 +00:00
parent 452de53c12
commit 97fc8d845e
4 changed files with 209 additions and 140 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
bfd/ChangeLog
View File

@ -1,3 +1,13 @@
2009-05-14 Ulrich Weigand <uweigand@de.ibm.com>
* elf32-spu.c (struct spu_link_hash_table): Add fromelem_size_log2.
(spu_elf_setup): Initialize it.
(spu_elf_size_stubs): Move .ovtab into .bss for software i-cache.
Update to new-sytle cache manager data structures.
(spu_elf_build_stubs): Generate new-style cache manager data
structures and symbols.
(spu_elf_auto_overlay): Update size computation.
2009-05-14 Ulrich Weigand <uweigand@de.ibm.com>
* elf32-spu.c (spu_elf_modify_segment_map): Move all PF_OVERLAY

136
bfd/elf32-spu.c
View File

@ -322,6 +322,7 @@ struct spu_link_hash_table
/* For soft icache. */
unsigned int line_size_log2;
unsigned int num_lines_log2;
unsigned int fromelem_size_log2;
/* How much memory we have. */
unsigned int local_store;
@ -461,10 +462,18 @@ spu_elf_link_hash_table_create (bfd *abfd)
void
spu_elf_setup (struct bfd_link_info *info, struct spu_elf_params *params)
{
bfd_vma max_branch_log2;
struct spu_link_hash_table *htab = spu_hash_table (info);
htab->params = params;
htab->line_size_log2 = bfd_log2 (htab->params->line_size);
htab->num_lines_log2 = bfd_log2 (htab->params->num_lines);
/* For the software i-cache, we provide a "from" list whose size
is a power-of-two number of quadwords, big enough to hold one
byte per outgoing branch. Compute this number here. */
max_branch_log2 = bfd_log2 (htab->params->max_branch);
htab->fromelem_size_log2 = max_branch_log2 > 4 ? max_branch_log2 - 4 : 0;
}
/* Find the symbol for the given R_SYMNDX in IBFD and set *HP and *SYMP
@ -1704,21 +1713,24 @@ spu_elf_size_stubs (struct bfd_link_info *info)
stub->size = htab->stub_count[ovl] * ovl_stub_size (htab->params);
}
flags = (SEC_ALLOC | SEC_LOAD
| SEC_HAS_CONTENTS | SEC_IN_MEMORY);
htab->ovtab = bfd_make_section_anyway_with_flags (ibfd, ".ovtab", flags);
if (htab->ovtab == NULL
|| !bfd_set_section_alignment (ibfd, htab->ovtab, 4))
return 0;
if (htab->params->ovly_flavour == ovly_soft_icache)
{
/* Space for icache manager tables.
a) Tag array, one quadword per cache line.
b) Linked list elements, max_branch per line quadwords. */
htab->ovtab->size = 16 * ((1 + htab->params->max_branch)
<< htab->num_lines_log2);
b) Rewrite "to" list, one quadword per cache line.
c) Rewrite "from" list, one byte per outgoing branch (rounded up to
a power-of-two number of full quadwords) per cache line. */
flags = SEC_ALLOC;
htab->ovtab = bfd_make_section_anyway_with_flags (ibfd, ".ovtab", flags);
if (htab->ovtab == NULL
|| !bfd_set_section_alignment (ibfd, htab->ovtab, 4))
return 0;
htab->ovtab->size = (16 + 16 + (16 << htab->fromelem_size_log2))
<< htab->num_lines_log2;
flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
htab->init = bfd_make_section_anyway_with_flags (ibfd, ".ovini", flags);
if (htab->init == NULL
|| !bfd_set_section_alignment (ibfd, htab->init, 4))
@ -1741,6 +1753,12 @@ spu_elf_size_stubs (struct bfd_link_info *info)
. } _ovly_buf_table[];
. */
flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
htab->ovtab = bfd_make_section_anyway_with_flags (ibfd, ".ovtab", flags);
if (htab->ovtab == NULL
|| !bfd_set_section_alignment (ibfd, htab->ovtab, 4))
return 0;
htab->ovtab->size = htab->num_overlays * 16 + 16 + htab->num_buf * 4;
}
@ -1782,7 +1800,7 @@ spu_elf_place_overlay_data (struct bfd_link_info *info)
ovout = ".data";
if (htab->params->ovly_flavour == ovly_soft_icache)
ovout = ".data.icache";
ovout = ".bss";
(*htab->params->place_spu_section) (htab->ovtab, NULL, ovout);
(*htab->params->place_spu_section) (htab->toe, NULL, ".toe");
@ -1965,7 +1983,7 @@ spu_elf_build_stubs (struct bfd_link_info *info)
p = htab->ovtab->contents;
if (htab->params->ovly_flavour == ovly_soft_icache)
{
bfd_vma off, icache_base, linklist;
bfd_vma off;
h = define_ovtab_symbol (htab, "__icache_tag_array");
if (h == NULL)
@ -1980,32 +1998,38 @@ spu_elf_build_stubs (struct bfd_link_info *info)
h->root.u.def.value = 16 << htab->num_lines_log2;
h->root.u.def.section = bfd_abs_section_ptr;
icache_base = htab->ovl_sec[0]->vma;
linklist = (htab->ovtab->output_section->vma
+ htab->ovtab->output_offset
+ off);
for (i = 0; i < htab->params->num_lines; i++)
{
bfd_vma line_end = icache_base + ((i + 1) << htab->line_size_log2);
bfd_vma stub_base = line_end - htab->params->max_branch * 32;
bfd_vma link_elem = linklist + i * htab->params->max_branch * 16;
bfd_vma locator = link_elem - stub_base / 2;
bfd_put_32 (htab->ovtab->owner, locator, p + 4);
bfd_put_16 (htab->ovtab->owner, link_elem, p + 8);
bfd_put_16 (htab->ovtab->owner, link_elem, p + 10);
bfd_put_16 (htab->ovtab->owner, link_elem, p + 12);
bfd_put_16 (htab->ovtab->owner, link_elem, p + 14);
p += 16;
}
h = define_ovtab_symbol (htab, "__icache_linked_list");
h = define_ovtab_symbol (htab, "__icache_rewrite_to");
if (h == NULL)
return FALSE;
h->root.u.def.value = off;
h->size = htab->params->max_branch << (htab->num_lines_log2 + 4);
h->size = 16 << htab->num_lines_log2;
off += h->size;
p += h->size;
h = define_ovtab_symbol (htab, "__icache_rewrite_to_size");
if (h == NULL)
return FALSE;
h->root.u.def.value = 16 << htab->num_lines_log2;
h->root.u.def.section = bfd_abs_section_ptr;
h = define_ovtab_symbol (htab, "__icache_rewrite_from");
if (h == NULL)
return FALSE;
h->root.u.def.value = off;
h->size = 16 << (htab->fromelem_size_log2 + htab->num_lines_log2);
off += h->size;
h = define_ovtab_symbol (htab, "__icache_rewrite_from_size");
if (h == NULL)
return FALSE;
h->root.u.def.value = 16 << (htab->fromelem_size_log2
+ htab->num_lines_log2);
h->root.u.def.section = bfd_abs_section_ptr;
h = define_ovtab_symbol (htab, "__icache_log2_fromelemsize");
if (h == NULL)
return FALSE;
h->root.u.def.value = htab->fromelem_size_log2;
h->root.u.def.section = bfd_abs_section_ptr;
h = define_ovtab_symbol (htab, "__icache_base");
if (h == NULL)
@ -2014,12 +2038,42 @@ spu_elf_build_stubs (struct bfd_link_info *info)
h->root.u.def.section = bfd_abs_section_ptr;
h->size = htab->num_buf << htab->line_size_log2;
h = define_ovtab_symbol (htab, "__icache_linesize");
if (h == NULL)
return FALSE;
h->root.u.def.value = 1 << htab->line_size_log2;
h->root.u.def.section = bfd_abs_section_ptr;
h = define_ovtab_symbol (htab, "__icache_log2_linesize");
if (h == NULL)
return FALSE;
h->root.u.def.value = htab->line_size_log2;
h->root.u.def.section = bfd_abs_section_ptr;
h = define_ovtab_symbol (htab, "__icache_neg_log2_linesize");
if (h == NULL)
return FALSE;
h->root.u.def.value = -htab->line_size_log2;
h->root.u.def.section = bfd_abs_section_ptr;
h = define_ovtab_symbol (htab, "__icache_cachesize");
if (h == NULL)
return FALSE;
h->root.u.def.value = 1 << (htab->num_lines_log2 + htab->line_size_log2);
h->root.u.def.section = bfd_abs_section_ptr;
h = define_ovtab_symbol (htab, "__icache_log2_cachesize");
if (h == NULL)
return FALSE;
h->root.u.def.value = htab->num_lines_log2 + htab->line_size_log2;
h->root.u.def.section = bfd_abs_section_ptr;
h = define_ovtab_symbol (htab, "__icache_neg_log2_cachesize");
if (h == NULL)
return FALSE;
h->root.u.def.value = -(htab->num_lines_log2 + htab->line_size_log2);
h->root.u.def.section = bfd_abs_section_ptr;
if (htab->init != NULL && htab->init->size != 0)
{
htab->init->contents = bfd_zalloc (htab->init->owner,
@ -4271,14 +4325,14 @@ spu_elf_auto_overlay (struct bfd_link_info *info)
fixed_size += htab->non_ovly_stub * 16;
/* Space for icache manager tables.
a) Tag array, one quadword per cache line.
- word 0: ia address of present line, init to zero.
- word 1: link locator. link_elem=stub_addr/2+locator
- halfwords 4-7: head/tail pointers for linked lists. */
- word 0: ia address of present line, init to zero. */
fixed_size += 16 << htab->num_lines_log2;
/* b) Linked list elements, max_branch per line. */
fixed_size += htab->params->max_branch << (htab->num_lines_log2 + 4);
/* c) Indirect branch descriptors, 8 quadwords. */
fixed_size += 8 * 16;
/* b) Rewrite "to" list, one quadword per cache line. */
fixed_size += 16 << htab->num_lines_log2;
/* c) Rewrite "from" list, one byte per outgoing branch (rounded up
to a power-of-two number of full quadwords) per cache line. */
fixed_size += 16 << (htab->fromelem_size_log2
+ htab->num_lines_log2);
/* d) Pointer to __ea backing store (toe), 1 quadword. */
fixed_size += 16;
}

5
ld/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2009-05-14 Ulrich Weigand <uweigand@de.ibm.com>
* ld-spu/icache1.d: Update all addresses to accomodate icache
buffer shifted down 0x800 bytes.
2009-05-14 Ulrich Weigand <uweigand@de.ibm.com>
* ld-spu/icache.d: Update file offsets.

198
ld/testsuite/ld-spu/icache1.d
View File

@ -6,14 +6,14 @@
Disassembly of section .ovl.init:
00000800 <__icache_fileoff>:
00000000 <__icache_fileoff>:
.* 00 00 00 00.*
.* 00 00 02 00.*
\.\.\.
Disassembly of section \.ovly1:
00000800 <\.ovly1>:
00000000 <\.ovly1>:
.* ai \$1,\$1,64 # 40
.* lqd \$0,16\(\$1\)
.* bi \$0
@ -21,43 +21,43 @@ Disassembly of section \.ovly1:
Disassembly of section \.ovly2:
00000c00 <f1>:
00000400 <f1>:
.* 40 20 00 00 nop \$0
.* 24 00 40 80 stqd \$0,16\(\$1\)
.* 1c f0 00 81 ai \$1,\$1,-64
.* 24 00 00 81 stqd \$1,0\(\$1\)
.* 33 00 73 80 brsl \$0,fac .*
.* 33 00 77 00 brsl \$0,fcc .*
.* 33 00 73 80 brsl \$0,7ac .*
.* 33 00 77 00 brsl \$0,7cc .*
\.\.\.
.* 32 00 16 80 br fec .*
.* 32 00 16 80 br 7ec .*
\.\.\.
fa0: 00 00 00 02.*
fa4: 00 04 11 04.*
fa8: a0 00 0c 10.*
fac: 31 03 01 cb brasl \$75,180c <__icache_br_handler>
fb0: 00 00 ed 00.*
7a0: 00 00 00 02.*
7a4: 00 04 09 04.*
7a8: a0 00 04 10.*
7ac: 31 02 01 cb brasl \$75,100c <__icache_br_handler>
7b0: 00 00 ed 00.*
\.\.\.
fc0: 00 00 00 02.*
fc4: 00 04 10 00.*
fc8: a0 00 0c 14.*
fcc: 31 03 01 cb brasl \$75,180c <__icache_br_handler>
fd0: 00 00 00 00.*
fd4: 00 00 0a 80.*
7c0: 00 00 00 02.*
7c4: 00 04 08 00.*
7c8: a0 00 04 14.*
7cc: 31 02 01 cb brasl \$75,100c <__icache_br_handler>
7d0: 00 00 00 00.*
7d4: 00 00 0a 80.*
\.\.\.
fe4: 00 04 08 00.*
fe8: 20 00 0f 38.*
fec: 31 03 01 cb brasl \$75,180c <__icache_br_handler>
7e4: 00 04 00 00.*
7e8: 20 00 07 38.*
7ec: 31 02 01 cb brasl \$75,100c <__icache_br_handler>
\.\.\.
ff8: 00 7f 0f 80.*
ffc: 00 00 00 00.*
7f8: 00 7f 0f 80.*
7fc: 00 00 00 00.*
Disassembly of section \.ovly3:
00001000 <f3>:
00000800 <f3>:
\.\.\.
.* 35 00 00 00 bi \$0
00001104 <f2>:
00000904 <f2>:
.* 1c e0 00 81 ai \$1,\$1,-128
.* 24 00 00 81 stqd \$1,0\(\$1\)
\.\.\.
@ -67,11 +67,11 @@ Disassembly of section \.ovly3:
Disassembly of section \.ovly4:
00001400 <f5>:
00000c00 <f5>:
.* 24 00 40 80 stqd \$0,16\(\$1\)
.* 24 f8 00 81 stqd \$1,-512\(\$1\)
.* 1c 80 00 81 ai \$1,\$1,-512
.* 33 7f fe 80 brsl \$0,1400 <f5> # 1400
.* 33 7f fe 80 brsl \$0,c00 <f5> # c00
\.\.\.
.* 42 01 00 03 ila \$3,200.*
.* 18 00 c0 81 a \$1,\$1,\$3
@ -81,124 +81,124 @@ Disassembly of section \.ovly4:
Disassembly of section \.ovly5:
00000800 <\.ovly5>:
00000000 <\.ovly5>:
\.\.\.
.* 42 01 00 03 ila \$3,200 .*
.* 18 00 c0 81 a \$1,\$1,\$3
.* 34 00 40 80 lqd \$0,16\(\$1\)
.* 30 01 7d 80 bra bec .*
.* 30 00 7d 80 bra 3ec .*
\.\.\.
be0: 00 00 00 03.*
be4: 00 04 14 00.*
be8: a0 00 0b 2c.*
bec: 31 03 01 cb brasl \$75,180c <__icache_br_handler>
3e0: 00 00 00 03.*
3e4: 00 04 0c 00.*
3e8: a0 00 03 2c.*
3ec: 31 02 01 cb brasl \$75,100c <__icache_br_handler>
\.\.\.
bfc: 00 03 fd 80.*
3fc: 00 01 fd 80.*
Disassembly of section \.ovly6:
00000c00 <\.ovly6>:
.* 31 01 f5 80 brasl \$0,fac .*
.* 33 00 79 00 brsl \$0,fcc .*
00000400 <\.ovly6>:
.* 31 00 f5 80 brasl \$0,7ac .*
.* 33 00 79 00 brsl \$0,7cc .*
\.\.\.
.* 32 00 18 80 br fec .*
.* 32 00 18 80 br 7ec .*
\.\.\.
fa0: 00 00 00 07.*
fa4: 00 08 14 00.*
fa8: a0 00 0c 00.*
fac: 31 03 01 cb brasl \$75,180c <__icache_br_handler>
fb0: 00 03 75 80.*
7a0: 00 00 00 07.*
7a4: 00 08 0c 00.*
7a8: a0 00 04 00.*
7ac: 31 02 01 cb brasl \$75,100c <__icache_br_handler>
7b0: 00 01 75 80.*
\.\.\.
fc0: 00 00 00 07.*
fc4: 00 08 14 00.*
fc8: a0 00 0c 04.*
fcc: 31 03 01 cb brasl \$75,180c <__icache_br_handler>
fd0: 00 00 00 00.*
fd4: 00 00 86 80.*
7c0: 00 00 00 07.*
7c4: 00 08 0c 00.*
7c8: a0 00 04 04.*
7cc: 31 02 01 cb brasl \$75,100c <__icache_br_handler>
7d0: 00 00 00 00.*
7d4: 00 00 86 80.*
\.\.\.
fe0: 00 00 00 04.*
fe4: 00 08 08 00.*
fe8: 20 00 0f 28.*
fec: 31 03 01 cb brasl \$75,180c <__icache_br_handler>
7e0: 00 00 00 04.*
7e4: 00 08 00 00.*
7e8: 20 00 07 28.*
7ec: 31 02 01 cb brasl \$75,100c <__icache_br_handler>
\.\.\.
ff8: 00 7f 03 80.*
ffc: 00 00 00 00.*
7f8: 00 7f 03 80.*
7fc: 00 00 00 00.*
Disassembly of section \.ovly7:
00001000 <\.ovly7>:
00000800 <\.ovly7>:
.* 41 7f ff 83 ilhu \$3,65535 # ffff
.* 60 f8 30 03 iohl \$3,61536 # f060
.* 18 00 c0 84 a \$4,\$1,\$3
.* 00 20 00 00 lnop
.* 04 00 02 01 ori \$1,\$4,0
.* 24 00 02 04 stqd \$4,0\(\$4\)
.* 33 00 72 80 brsl \$0,13ac .*
.* 33 00 76 00 brsl \$0,13cc .*
.* 33 00 72 80 brsl \$0,bac .*
.* 33 00 76 00 brsl \$0,bcc .*
.* 34 00 00 81 lqd \$1,0\(\$1\)
\.\.\.
.* 32 00 15 00 br 13ec .*
.* 32 00 15 00 br bec .*
\.\.\.
13a0: 00 00 00 03.*
13a4: 00 04 14 00.*
13a8: a0 00 10 18.*
13ac: 31 03 01 cb brasl \$75,180c <__icache_br_handler>
ba0: 00 00 00 03.*
ba4: 00 04 0c 00.*
ba8: a0 00 08 18.*
bac: 31 02 01 cb brasl \$75,100c <__icache_br_handler>
\.\.\.
13b8: 00 00 0f 80.*
13bc: 00 00 00 00.*
13c0: 00 00 00 07.*
13c4: 00 08 14 00.*
13c8: a0 00 10 1c.*
13cc: 31 03 01 cb brasl \$75,180c <__icache_br_handler>
bb8: 00 00 0f 80.*
bbc: 00 00 00 00.*
bc0: 00 00 00 07.*
bc4: 00 08 0c 00.*
bc8: a0 00 08 1c.*
bcc: 31 02 01 cb brasl \$75,100c <__icache_br_handler>
\.\.\.
13dc: 00 00 0a 80.*
13e0: 00 00 00 05.*
13e4: 00 08 0c 00.*
13e8: 20 00 13 44.*
13ec: 31 03 01 cb brasl \$75,180c <__icache_br_handler>
13f0: 00 00 00 00.*
13f4: 00 7f 02 80.*
bdc: 00 00 0a 80.*
be0: 00 00 00 05.*
be4: 00 08 04 00.*
be8: 20 00 0b 44.*
bec: 31 02 01 cb brasl \$75,100c <__icache_br_handler>
bf0: 00 00 00 00.*
bf4: 00 7f 02 80.*
\.\.\.
Disassembly of section \.ovly8:
00001400 <f4>:
00000c00 <f4>:
.* 24 00 40 80 stqd \$0,16\(\$1\)
.* 24 f8 00 81 stqd \$1,-512\(\$1\)
.* 1c 80 00 81 ai \$1,\$1,-512
.* 31 02 f9 80 brasl \$0,17cc .*
.* 31 01 f9 80 brasl \$0,fcc .*
\.\.\.
.* 32 00 17 80 br 17ec .*
.* 32 00 17 80 br fec .*
\.\.\.
17c0: 00 00 00 02.*
17c4: 00 04 11 04.*
17c8: a0 00 14 0c.*
17cc: 31 03 01 cb brasl \$75,180c <__icache_br_handler>
fc0: 00 00 00 02.*
fc4: 00 04 09 04.*
fc8: a0 00 0c 0c.*
fcc: 31 02 01 cb brasl \$75,100c <__icache_br_handler>
\.\.\.
17dc: 00 00 d9 00.*
17e0: 00 00 00 06.*
17e4: 00 08 10 00.*
17e8: 20 00 17 30.*
17ec: 31 03 01 cb brasl \$75,180c <__icache_br_handler>
17f0: 00 7f 0d 80.*
fdc: 00 00 d9 00.*
fe0: 00 00 00 06.*
fe4: 00 08 08 00.*
fe8: 20 00 0f 30.*
fec: 31 02 01 cb brasl \$75,100c <__icache_br_handler>
ff0: 00 7f 0d 80.*
\.\.\.
Disassembly of section \.text:
00001800 <_start>:
00001000 <_start>:
.* 41 00 02 03 ilhu \$3,4
.* 60 8a 00 03 iohl \$3,5120 # 1400
.* 32 00 04 80 br 182c.*
0000180c <__icache_br_handler>:
180c: 00 00 00 00 stop
00001810 <__icache_call_handler>:
.* 60 86 00 03 iohl \$3,3072 # c00
.* 32 00 04 80 br 102c.*
0000100c <__icache_br_handler>:
100c: 00 00 00 00 stop
00001010 <__icache_call_handler>:
\.\.\.
1820: 00 00 00 01.*
1824: 00 04 0c 00.*
1828: a0 00 18 08.*
182c: 31 03 02 4b brasl \$75,1810 <__icache_call_handler>
1020: 00 00 00 01.*
1024: 00 04 04 00.*
1028: a0 00 10 08.*
102c: 31 02 02 4b brasl \$75,1010 <__icache_call_handler>
\.\.\.
1838: 00 7e 7b 80.*
1038: 00 7e 7b 80.*
\.\.\.
#pass