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| author | Alan Modra <amodra@gmail.com> | 2018-07-26 12:11:11 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2018-07-26 12:53:50 +0930 |
| commit | 33cb30a1f932b5a211aa319a01783d4957ae5d57 (patch) | |
| tree | a3f75b30d87e0e461c47f3e1c786eaa67ad760b3 /gas | |
| parent | 6cf212b445b4222bef4f74544896a3be332d5a12 (diff) | |
| download | gdb-33cb30a1f932b5a211aa319a01783d4957ae5d57.zip gdb-33cb30a1f932b5a211aa319a01783d4957ae5d57.tar.gz gdb-33cb30a1f932b5a211aa319a01783d4957ae5d57.tar.bz2 | |
Implement PowerPC64 .localentry for value 1
This adds support for ".localentry 1", a new st_other
STO_PPC64_LOCAL_MASK encoding that signifies a function with a single
entry point like ".localentry 0", but unlike a ".localentry 0"
function does not preserve r2.
include/
* elf/ppc64.h: Specify byte offset to local entry for values
of two to six in STO_PPC64_LOCAL_MASK. Clarify r2 return
value for such functions when entering via global entry point.
Specify meaning of a value of one in STO_PPC64_LOCAL_MASK.
bfd/
* elf64-ppc.c (ppc64_elf_size_stubs): Use a ppc_stub_long_branch_r2off
for calls to symbols with STO_PPC64_LOCAL_MASK bits set to 1.
gas/
* config/tc-ppc.c (ppc_elf_localentry): Allow .localentry values
of 1 and 7 to directly set value into STO_PPC64_LOCAL_MASK bits.
ld/testsuite/
* ld-powerpc/elfv2.s: Add .localentry f5,1 testcase.
* ld-powerpc/elfv2exe.d: Update.
* ld-powerpc/elfv2so.d: Update.
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/ChangeLog | 5 | ||||
| -rw-r--r-- | gas/config/tc-ppc.c | 18 |
2 files changed, 19 insertions, 4 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index e0de16e..fa8a7c5 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,8 @@ +2018-07-26 Alan Modra <amodra@gmail.com> + + * config/tc-ppc.c (ppc_elf_localentry): Allow .localentry values + of 1 and 7 to directly set value into STO_PPC64_LOCAL_MASK bits. + 2018-07-25 H.J. Lu <hongjiu.lu@intel.com> * config/tc-i386.c (Broadcast_Operation): Add bytes. diff --git a/gas/config/tc-ppc.c b/gas/config/tc-ppc.c index 92e5eb5..4388b25 100644 --- a/gas/config/tc-ppc.c +++ b/gas/config/tc-ppc.c @@ -2378,13 +2378,23 @@ ppc_elf_localentry (int ignore ATTRIBUTE_UNUSED) if (resolve_expression (&exp) && exp.X_op == O_constant) { - unsigned char encoded = PPC64_SET_LOCAL_ENTRY_OFFSET (exp.X_add_number); + unsigned int encoded, ok; - if (exp.X_add_number != (offsetT) PPC64_LOCAL_ENTRY_OFFSET (encoded)) - as_bad (_(".localentry expression for `%s' " - "is not a valid power of 2"), S_GET_NAME (sym)); + ok = 1; + if (exp.X_add_number == 1 || exp.X_add_number == 7) + encoded = exp.X_add_number << STO_PPC64_LOCAL_BIT; else { + encoded = PPC64_SET_LOCAL_ENTRY_OFFSET (exp.X_add_number); + if (exp.X_add_number != (offsetT) PPC64_LOCAL_ENTRY_OFFSET (encoded)) + { + as_bad (_(".localentry expression for `%s' " + "is not a valid power of 2"), S_GET_NAME (sym)); + ok = 0; + } + } + if (ok) + { bfdsym = symbol_get_bfdsym (sym); elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); gas_assert (elfsym); |