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[rfc] [3/4] SPU overlay support: Test case
- From: "Ulrich Weigand" <uweigand at de dot ibm dot com>
- To: gdb-patches at sourceware dot org
- Date: Tue, 8 May 2007 00:26:24 +0200 (CEST)
- Subject: [rfc] [3/4] SPU overlay support: Test case
Hello,
this patch enables the overlays.exp test case for spu-*-*. There were
two problems with the test case: it tests data overlays (which spu does
not support) in addition to code overlays, and it provided its own
manual overlay manager (the spu linker provides an overlay manager
automatically).
The patch changes this to add a mode to not test data overlays, and
stubs out the ovlymgr.c overlay manager on spu.
Tested on spu-elf.
I'll commit this together with the other parts.
Bye,
Ulrich
testsuite/ChangeLog:
* gdb.base/overlays.exp: Add support for targets with only code
overlay support, not data overlay. Support spu-*-* target in
this mode.
* gdb.base/ovlymgr.c: Provide stubs for spu target.
* gdb.base/spu.ld: New file.
diff -urNp gdb-orig/gdb/testsuite/gdb.base/overlays.exp gdb-head/gdb/testsuite/gdb.base/overlays.exp
--- gdb-orig/gdb/testsuite/gdb.base/overlays.exp 2007-01-11 20:58:07.000000000 +0100
+++ gdb-head/gdb/testsuite/gdb.base/overlays.exp 2007-05-07 22:38:05.984381335 +0200
@@ -31,10 +31,15 @@ if $tracelevel then {
set prms_id 0
set bug_id 0
+set data_overlays 1
+
if [istarget "d10v-*-*"] then {
set linker_script "${srcdir}/${subdir}/d10v.ld";
} elseif [istarget "m32r-*-*"] then {
set linker_script "${srcdir}/${subdir}/m32r.ld";
+} elseif [istarget "spu-*-*"] then {
+ set linker_script "${srcdir}/${subdir}/spu.ld";
+ set data_overlays 0
} else {
verbose "Skipping overlay test -- not implemented for this target."
return
@@ -131,14 +136,16 @@ set bar_lma [get_func_address "bar" "\
set baz_lma [get_func_address "baz" "\\*baz\\*" "baz load address"]
set grbx_lma [get_func_address "grbx" "\\*grbx\\*" "grbx load address"]
-gdb_test "print \$foox_lma = &foox" \
+if $data_overlays then {
+ gdb_test "print \$foox_lma = &foox" \
".* $iptrcast 0x.*" "foox load addr"
-gdb_test "print \$barx_lma = &barx" \
+ gdb_test "print \$barx_lma = &barx" \
".* $iptrcast 0x.*" "barx load addr"
-gdb_test "print \$bazx_lma = &bazx" \
+ gdb_test "print \$bazx_lma = &bazx" \
".* $iptrcast 0x.*" "bazx load addr"
-gdb_test "print \$grbxx_lma = &grbxx" \
+ gdb_test "print \$grbxx_lma = &grbxx" \
".* $iptrcast 0x.*" "grbxx load addr"
+}
# map each overlay successively, and
# capture the VMA addresses of [foo bar baz grbx foox barx bazx grbxx]
@@ -159,36 +166,39 @@ gdb_test "overlay map .ovly3" ""
gdb_test "overlay list" "Section .ovly3, loaded at.*, mapped at.*" "List ovly3"
set grbx_vma [get_func_address "grbx" "grbx" "grbx runtime address"]
-gdb_test "overlay map .data00" ""
-gdb_test "overlay list" "Section .data00, loaded .*, mapped .*" "List data00"
-gdb_test "print \$foox_vma = &foox" \
+if $data_overlays then {
+ gdb_test "overlay map .data00" ""
+ gdb_test "overlay list" "Section .data00, loaded .*, mapped .*" "List data00"
+ gdb_test "print \$foox_vma = &foox" \
".* $iptrcast 0x.*" "foox runtime addr"
-gdb_test "overlay map .data01" ""
-gdb_test "overlay list" "Section .data01, loaded .*, mapped .*" "List data01"
-gdb_test "print \$barx_vma = &barx" \
+ gdb_test "overlay map .data01" ""
+ gdb_test "overlay list" "Section .data01, loaded .*, mapped .*" "List data01"
+ gdb_test "print \$barx_vma = &barx" \
".* $iptrcast 0x.*" "barx runtime addr"
-gdb_test "overlay map .data02" ""
-gdb_test "overlay list" "Section .data02, loaded .*, mapped .*" "List data02"
-gdb_test "print \$bazx_vma = &bazx" \
+ gdb_test "overlay map .data02" ""
+ gdb_test "overlay list" "Section .data02, loaded .*, mapped .*" "List data02"
+ gdb_test "print \$bazx_vma = &bazx" \
".* $iptrcast 0x.*" "bazx runtime addr"
-gdb_test "overlay map .data03" ""
-gdb_test "overlay list" "Section .data03, loaded .*, mapped .*" "List data03"
-gdb_test "print \$grbxx_vma = &grbxx" \
+ gdb_test "overlay map .data03" ""
+ gdb_test "overlay list" "Section .data03, loaded .*, mapped .*" "List data03"
+ gdb_test "print \$grbxx_vma = &grbxx" \
".* $iptrcast 0x.*" "grbxx runtime addr"
-
+}
# Verify that LMA != VMA
gdb_test "print $foo_lma != $foo_vma" ".* = 1" "foo's LMA != VMA"
gdb_test "print $bar_lma != $bar_vma" ".* = 1" "bar's LMA != VMA"
gdb_test "print $baz_lma != $baz_vma" ".* = 1" "baz's LMA != VMA"
gdb_test "print $grbx_lma != $grbx_vma" ".* = 1" "grbx's LMA != VMA"
-gdb_test "print \$foox_lma != \$foox_vma" ".* = 1" "foox's LMA != VMA"
-gdb_test "print \$barx_lma != \$barx_vma" ".* = 1" "barx's LMA != VMA"
-gdb_test "print \$bazx_lma != \$bazx_vma" ".* = 1" "bazx's LMA != VMA"
-gdb_test "print \$grbxx_lma != \$grbxx_vma" ".* = 1" "grbxx's LMA != VMA"
+if $data_overlays then {
+ gdb_test "print \$foox_lma != \$foox_vma" ".* = 1" "foox's LMA != VMA"
+ gdb_test "print \$barx_lma != \$barx_vma" ".* = 1" "barx's LMA != VMA"
+ gdb_test "print \$bazx_lma != \$bazx_vma" ".* = 1" "bazx's LMA != VMA"
+ gdb_test "print \$grbxx_lma != \$grbxx_vma" ".* = 1" "grbxx's LMA != VMA"
+}
# Verify that early-mapped overlays have been bumped out
# by later-mapped overlays layed over in the same VMA range.
@@ -234,10 +244,12 @@ simultaneous_pair .ovly0 .ovly3
simultaneous_pair .ovly1 .ovly2
simultaneous_pair .ovly1 .ovly3
-simultaneous_pair .data00 .data02
-simultaneous_pair .data00 .data03
-simultaneous_pair .data01 .data02
-simultaneous_pair .data01 .data03
+if $data_overlays then {
+ simultaneous_pair .data00 .data02
+ simultaneous_pair .data00 .data03
+ simultaneous_pair .data01 .data02
+ simultaneous_pair .data01 .data03
+}
# test automatic mode
diff -urNp gdb-orig/gdb/testsuite/gdb.base/ovlymgr.c gdb-head/gdb/testsuite/gdb.base/ovlymgr.c
--- gdb-orig/gdb/testsuite/gdb.base/ovlymgr.c 2002-04-04 21:48:09.000000000 +0200
+++ gdb-head/gdb/testsuite/gdb.base/ovlymgr.c 2007-05-07 22:38:05.989380616 +0200
@@ -5,6 +5,18 @@
#include "ovlymgr.h"
+#ifdef __SPU__
+/* SPU tool chain provides its own overlay manager. */
+bool
+OverlayLoad (unsigned long ovlyno)
+{
+}
+bool
+OverlayUnload (unsigned long ovlyno)
+{
+}
+#else /* __SPU__ */
+
/* Local functions and data: */
extern unsigned long _ovly_table[][4];
@@ -231,3 +243,4 @@ ovly_copy (unsigned long dst, unsigned l
return;
}
+#endif /* __SPU__ */
diff -urNp gdb-orig/gdb/testsuite/gdb.base/spu.ld gdb-head/gdb/testsuite/gdb.base/spu.ld
--- gdb-orig/gdb/testsuite/gdb.base/spu.ld 1970-01-01 01:00:00.000000000 +0100
+++ gdb-head/gdb/testsuite/gdb.base/spu.ld 2007-05-07 22:38:05.994379898 +0200
@@ -0,0 +1,202 @@
+/* Script for -z combreloc: combine and sort reloc sections */
+OUTPUT_FORMAT("elf32-spu", "elf32-spu",
+ "elf32-spu")
+OUTPUT_ARCH(spu)
+ENTRY(_start)
+SEARCH_DIR("/usr/spu/lib");
+/* Do we need any of these for elf?
+ __DYNAMIC = 0; */
+SECTIONS
+{
+ /* Read-only sections, merged into text segment: */
+ PROVIDE (__executable_start = 0); . = 0;
+ .interrupt : { KEEP(*(.interrupt)) }
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+ *(.rel.init)
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+ }
+ .rel.plt : { *(.rel.plt) }
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+ .init :
+ {
+ KEEP (*(.init))
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+ *(EXCLUDE_FILE (foo.o bar.o baz.o grbx.o) .text .stub .text.* .gnu.linkonce.t.*)
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+ /* Ensure the __preinit_array_start label is properly aligned. We
+ could instead move the label definition inside the section, but
+ the linker would then create the section even if it turns out to
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+ . = ALIGN(16);
+ PROVIDE (__preinit_array_start = .);
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+ PROVIDE (__init_array_start = .);
+ .init_array : { KEEP (*(.init_array)) }
+ PROVIDE (__init_array_end = .);
+ PROVIDE (__fini_array_start = .);
+ .fini_array : { KEEP (*(.fini_array)) }
+ PROVIDE (__fini_array_end = .);
+ .ctors :
+ {
+ /* gcc uses crtbegin.o to find the start of
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+ KEEP (*(.dtors))
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+ SORT(CONSTRUCTORS)
+ }
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+ {
+ *(.dynbss)
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+ *(COMMON)
+ /* Align here to ensure that the .bss section occupies space up to
+ _end. Align after .bss to ensure correct alignment even if the
+ .bss section disappears because there are no input sections. */
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+ }
+ .toe ALIGN(128) : { *(.toe) } = 0
+ . = ALIGN(16);
+ OVERLAY :
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+}
+
--
Dr. Ulrich Weigand
GNU Toolchain for Linux on System z and Cell BE
Ulrich.Weigand@de.ibm.com