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| author | Jiong Wang <jiong.wang@arm.com> | 2017-05-22 09:50:19 +0100 |
|---|---|---|
| committer | Jiong Wang <jiong.wang@arm.com> | 2017-05-22 13:27:11 +0100 |
| commit | 3c0367d0e2df21717b7345a1ccadef39183457ab (patch) | |
| tree | fccfbda79fe69e3ede043e5d11a426ccd0fd7d69 /gas/config | |
| parent | e11b3cdc565c5e86e43ef79d25fc5e8b88162ec1 (diff) | |
| download | gdb-3c0367d0e2df21717b7345a1ccadef39183457ab.zip gdb-3c0367d0e2df21717b7345a1ccadef39183457ab.tar.gz gdb-3c0367d0e2df21717b7345a1ccadef39183457ab.tar.bz2 | |
[AArch64, gas] Support ILP32 triplet aarch64*-linux-gnu_ilp32
This patch allows AArch64 GAS defaulting to ILP32 if it is configured with
aarch64*-linux-gnu_ilp32.
"md_after_parse_args" is implemented to update ABI into ILP32 if DEFAULT_ARCH is
"aarch64:32".
gas/
* configure.tgt: Set "arch" to "aarch64" if ${cpu} equals "aarch64".
Recognize the new triplet name aarch64*-linux-gnu_ilp32.
* configure.ac: Output DEFAULT_ARCH macro for AArch64.
* configure: Regenerate.
* config/tc-aarch64.h (aarch64_after_parse_args): New declaration.
(md_after_parse_args): New define.
* config/tc-aarch64.c (aarch64_abi_type): New enumeration
AARCH64_ABI_NONE.
(DEFAULT_ARCH): New define.
(aarch64_abi): Set default value to AARCH64_ABI_NONE.
(aarch64_after_parse_args): New function.
Diffstat (limited to 'gas/config')
| -rw-r--r-- | gas/config/tc-aarch64.c | 30 | ||||
| -rw-r--r-- | gas/config/tc-aarch64.h | 3 |
2 files changed, 30 insertions, 3 deletions
diff --git a/gas/config/tc-aarch64.c b/gas/config/tc-aarch64.c index 72b98fd..cdb2903 100644 --- a/gas/config/tc-aarch64.c +++ b/gas/config/tc-aarch64.c @@ -62,12 +62,20 @@ static symbolS *GOT_symbol; /* Which ABI to use. */ enum aarch64_abi_type { - AARCH64_ABI_LP64 = 0, - AARCH64_ABI_ILP32 = 1 + AARCH64_ABI_NONE = 0, + AARCH64_ABI_LP64 = 1, + AARCH64_ABI_ILP32 = 2 }; +#ifndef DEFAULT_ARCH +#define DEFAULT_ARCH "aarch64" +#endif + +/* DEFAULT_ARCH is initialized in gas/configure.tgt. */ +static const char *default_arch = DEFAULT_ARCH; + /* AArch64 ABI for the output file. */ -static enum aarch64_abi_type aarch64_abi = AARCH64_ABI_LP64; +static enum aarch64_abi_type aarch64_abi = AARCH64_ABI_NONE; /* When non-zero, program to a 32-bit model, in which the C data types int, long and all pointer types are 32-bit objects (ILP32); or to a @@ -7975,6 +7983,22 @@ aarch64_force_relocation (struct fix *fixp) #ifdef OBJ_ELF +/* Implement md_after_parse_args. This is the earliest time we need to decide + ABI. If no -mabi specified, the ABI will be decided by target triplet. */ + +void +aarch64_after_parse_args (void) +{ + if (aarch64_abi != AARCH64_ABI_NONE) + return; + + /* DEFAULT_ARCH will have ":32" extension if it's configured for ILP32. */ + if (strlen (default_arch) > 7 && strcmp (default_arch + 7, ":32") == 0) + aarch64_abi = AARCH64_ABI_ILP32; + else + aarch64_abi = AARCH64_ABI_LP64; +} + const char * elf64_aarch64_target_format (void) { diff --git a/gas/config/tc-aarch64.h b/gas/config/tc-aarch64.h index 5bf1399..4aa3494 100644 --- a/gas/config/tc-aarch64.h +++ b/gas/config/tc-aarch64.h @@ -192,6 +192,9 @@ struct aarch64_segment_info_type #define tc_regname_to_dw2regnum tc_aarch64_regname_to_dw2regnum #define tc_cfi_frame_initial_instructions tc_aarch64_frame_initial_instructions +extern void aarch64_after_parse_args (void); +#define md_after_parse_args() aarch64_after_parse_args () + #else /* Not OBJ_ELF. */ #define GLOBAL_OFFSET_TABLE_NAME "__GLOBAL_OFFSET_TABLE_" #endif |