| Summary: | FAIL: gdb.arch/amd64-init-x87-values.exp: check_x87_regs_around_init: check post FLD1 value of $fop | ||
|---|---|---|---|
| Product: | gdb | Reporter: | Tom de Vries <vries> |
| Component: | testsuite | Assignee: | Not yet assigned to anyone <unassigned> |
| Status: | NEW --- | ||
| Severity: | normal | ||
| Priority: | P2 | ||
| Version: | HEAD | ||
| Target Milestone: | --- | ||
| Host: | Target: | ||
| Build: | Last reconfirmed: | ||
Tentative patch:
...
diff --git a/gdb/testsuite/gdb.arch/amd64-init-x87-values.exp b/gdb/testsuite/gdb.arch/amd64-init-x87-values.exp
index 264c98b..6ad3430 100644
--- a/gdb/testsuite/gdb.arch/amd64-init-x87-values.exp
+++ b/gdb/testsuite/gdb.arch/amd64-init-x87-values.exp
@@ -105,7 +105,7 @@ proc_with_prefix check_x87_regs_around_init {} {
"fioff" $addr \
"foseg" "0x0" \
"fooff" "0x0" \
- "fop" "0x0" \
+ "fop" "0x0|0x1e8" \
"mxcsr" "0x1f80" ] {
gdb_test "p/x \$${regname}" " = ${regvalue}" "check post FLD1 value of \$${regname}"
}
...
|
On SLE-11, I run into: ... (gdb) p/x $fop^M $27 = 0x1e8^M (gdb) FAIL: gdb.arch/amd64-init-x87-values.exp: check_x87_regs_around_init: check post FLD1 value of $fop ... The expected value is 0. Can be reproduced on the command line: ... $ gdb -batch /outputs/gdb.arch/amd64-init-x87-values/amd64-init-x87-values \ -ex start \ -ex n -ex n -ex n \ -ex "p /x \$fop" \ -ex n \ -ex "p /x \$fop" \ -ex "info float" Temporary breakpoint 1 at 0x4000d5: file amd64-init-x87-values.S, line 27. Temporary breakpoint 1, main () at amd64-init-x87-values.S:27 27 nop 28 fwait 29 nop 30 fld1 $1 = 0x0 31 nop $2 = 0x1e8 =>R7: Valid 0x3fff8000000000000000 +1 R6: Empty 0x00000000000000000000 R5: Empty 0x00000000000000000000 R4: Empty 0x00000000000000000000 R3: Empty 0x00000000000000000000 R2: Empty 0x00000000000000000000 R1: Empty 0x00000000000000000000 R0: Empty 0x00000000000000000000 Status Word: 0x3800 TOP: 7 Control Word: 0x037f IM DM ZM OM UM PM PC: Extended Precision (64-bits) RC: Round to nearest Tag Word: 0x3fff Instruction Pointer: 0x00:0x004000d8 Operand Pointer: 0x00:0x00000000 Opcode: 0xd9e8 ... Interesting is that info float prints the opcode somewhat modified, such that we have: 0xd9e8, which is precisely the opcode: ... 00000000004000d5 <main>: 4000d5: 90 nop 4000d6: 9b fwait 4000d7: 90 nop 4000d8: d9 e8 fld1 4000da: 90 nop ... I wonder whether we should print $fop also as "0xd9e8", it would be somewhat clearer. Either way, it seems we get the correct opcode, which should be allow in the test-case.