Re: [Qemu-devel] [PATCH 1/4] include/elf.h: add aarch64 ELF machine and relocs

[Laurent Desnogues]

Hello,

On Thu, May 23, 2013 at 10:14 AM, Claudio Fontana
<address@hidden> wrote:
>
> we will use the 26bit relative relocs in the aarch64 tcg target.

Is there really any point in adding all of the relocation types?
i386 doesn't, mips doesn't, x86_64 doesn't.  I didn't check the
others.

I guess we can at least get rid of dynamic relocs.

Thanks,

Laurent

> Signed-off-by: Claudio Fontana <address@hidden>
> ---
>  include/elf.h | 129 
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 129 insertions(+)
>
> diff --git a/include/elf.h b/include/elf.h
> index a21ea53..cf0d3e2 100644
> --- a/include/elf.h
> +++ b/include/elf.h
> @@ -129,6 +129,8 @@ typedef int64_t  Elf64_Sxword;
>
>  #define EM_XTENSA   94      /* Tensilica Xtensa */
>
> +#define EM_AARCH64  183
> +
>  /* This is the info that is needed to parse the dynamic section of the file 
> */
>  #define DT_NULL                0
>  #define DT_NEEDED      1
> @@ -616,6 +618,133 @@ typedef struct {
>  /* Keep this the last entry.  */
>  #define R_ARM_NUM              256
>
> +/* ARM Aarch64 relocation types */
> +#define R_AARCH64_NONE                256 /* also accepts R_ARM_NONE (0) */
> +/* static data relocations */
> +#define R_AARCH64_ABS64               257
> +#define R_AARCH64_ABS32               258
> +#define R_AARCH64_ABS16               259
> +#define R_AARCH64_PREL64              260
> +#define R_AARCH64_PREL32              261
> +#define R_AARCH64_PREL16              262
> +/* static aarch64 group relocations */
> +/* group relocs to create unsigned data value or address inline */
> +#define R_AARCH64_MOVW_UABS_G0        263
> +#define R_AARCH64_MOVW_UABS_G0_NC     264
> +#define R_AARCH64_MOVW_UABS_G1        265
> +#define R_AARCH64_MOVW_UABS_G1_NC     266
> +#define R_AARCH64_MOVW_UABS_G2        267
> +#define R_AARCH64_MOVW_UABS_G2_NC     268
> +#define R_AARCH64_MOVW_UABS_G3        269
> +/* group relocs to create signed data or offset value inline */
> +#define R_AARCH64_MOVW_SABS_G0        270
> +#define R_AARCH64_MOVW_SABS_G1        271
> +#define R_AARCH64_MOVW_SABS_G2        272
> +/* relocs to generate 19, 21, and 33 bit PC-relative addresses */
> +#define R_AARCH64_LD_PREL_LO19        273
> +#define R_AARCH64_ADR_PREL_LO21       274
> +#define R_AARCH64_ADR_PREL_PG_HI21    275
> +#define R_AARCH64_ADR_PREL_PG_HI21_NC 276
> +#define R_AARCH64_ADD_ABS_LO12_NC     277
> +#define R_AARCH64_LDST8_ABS_LO12_NC   278
> +#define R_AARCH64_LDST16_ABS_LO12_NC  284
> +#define R_AARCH64_LDST32_ABS_LO12_NC  285
> +#define R_AARCH64_LDST64_ABS_LO12_NC  286
> +#define R_AARCH64_LDST128_ABS_LO12_NC 299
> +/* relocs for control-flow - all offsets as multiple of 4 */
> +#define R_AARCH64_TSTBR14             279
> +#define R_AARCH64_CONDBR19            280
> +#define R_AARCH64_JUMP26              282
> +#define R_AARCH64_CALL26              283
> +/* group relocs to create pc-relative offset inline */
> +#define R_AARCH64_MOVW_PREL_G0        287
> +#define R_AARCH64_MOVW_PREL_G0_NC     288
> +#define R_AARCH64_MOVW_PREL_G1        289
> +#define R_AARCH64_MOVW_PREL_G1_NC     290
> +#define R_AARCH64_MOVW_PREL_G2        291
> +#define R_AARCH64_MOVW_PREL_G2_NC     292
> +#define R_AARCH64_MOVW_PREL_G3        293
> +/* group relocs to create a GOT-relative offset inline */
> +#define R_AARCH64_MOVW_GOTOFF_G0      300
> +#define R_AARCH64_MOVW_GOTOFF_G0_NC   301
> +#define R_AARCH64_MOVW_GOTOFF_G1      302
> +#define R_AARCH64_MOVW_GOTOFF_G1_NC   303
> +#define R_AARCH64_MOVW_GOTOFF_G2      304
> +#define R_AARCH64_MOVW_GOTOFF_G2_NC   305
> +#define R_AARCH64_MOVW_GOTOFF_G3      306
> +/* GOT-relative data relocs */
> +#define R_AARCH64_GOTREL64            307
> +#define R_AARCH64_GOTREL32            308
> +/* GOT-relative instr relocs */
> +#define R_AARCH64_GOT_LD_PREL19       309
> +#define R_AARCH64_LD64_GOTOFF_LO15    310
> +#define R_AARCH64_ADR_GOT_PAGE        311
> +#define R_AARCH64_LD64_GOT_LO12_NC    312
> +#define R_AARCH64_LD64_GOTPAGE_LO15   313
> +/* General Dynamic TLS relocations */
> +#define R_AARCH64_TLSGD_ADR_PREL21            512
> +#define R_AARCH64_TLSGD_ADR_PAGE21            513
> +#define R_AARCH64_TLSGD_ADD_LO12_NC           514
> +#define R_AARCH64_TLSGD_MOVW_G1               515
> +#define R_AARCH64_TLSGD_MOVW_G0_NC            516
> +/* Local Dynamic TLS relocations */
> +#define R_AARCH64_TLSLD_ADR_PREL21            517
> +#define R_AARCH64_TLSLD_ADR_PAGE21            518
> +#define R_AARCH64_TLSLD_ADD_LO12_NC           519
> +#define R_AARCH64_TLSLD_MOVW_G1               520
> +#define R_AARCH64_TLSLD_MOVW_G0_NC            521
> +#define R_AARCH64_TLSLD_LD_PREL19             522
> +#define R_AARCH64_TLSLD_MOVW_DTPREL_G2        523
> +#define R_AARCH64_TLSLD_MOVW_DTPREL_G1        524
> +#define R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC     525
> +#define R_AARCH64_TLSLD_MOVW_DTPREL_G0        526
> +#define R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC     527
> +#define R_AARCH64_TLSLD_ADD_DTPREL_HI12       528
> +#define R_AARCH64_TLSLD_ADD_DTPREL_LO12       529
> +#define R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC    530
> +#define R_AARCH64_TLSLD_LDST8_DTPREL_LO12     531
> +#define R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC  532
> +#define R_AARCH64_TLSLD_LDST16_DTPREL_LO12    533
> +#define R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC 534
> +#define R_AARCH64_TLSLD_LDST32_DTPREL_LO12    535
> +#define R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC 536
> +#define R_AARCH64_TLSLD_LDST64_DTPREL_LO12    537
> +#define R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC 538
> +/* initial exec TLS relocations */
> +#define R_AARCH64_TLSIE_MOVW_GOTTPREL_G1      539
> +#define R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC   540
> +#define R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21   541
> +#define R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC 542
> +#define R_AARCH64_TLSIE_LD_GOTTPREL_PREL19    543
> +/* local exec TLS relocations */
> +#define R_AARCH64_TLSLE_MOVW_TPREL_G2         544
> +#define R_AARCH64_TLSLE_MOVW_TPREL_G1         545
> +#define R_AARCH64_TLSLE_MOVW_TPREL_G1_NC      546
> +#define R_AARCH64_TLSLE_MOVW_TPREL_G0         547
> +#define R_AARCH64_TLSLE_MOVW_TPREL_G0_NC      548
> +#define R_AARCH64_TLSLE_ADD_TPREL_HI12        549
> +#define R_AARCH64_TLSLE_ADD_TPREL_LO12        550
> +#define R_AARCH64_TLSLE_ADD_TPREL_LO12_NC     551
> +#define R_AARCH64_TLSLE_LDST8_TPREL_LO12      552
> +#define R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC   553
> +#define R_AARCH64_TLSLE_LDST16_TPREL_LO12     554
> +#define R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC  555
> +#define R_AARCH64_TLSLE_LDST32_TPREL_LO12     556
> +#define R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC  557
> +#define R_AARCH64_TLSLE_LDST64_TPREL_LO12     558
> +#define R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC  559
> +/* Dynamic Relocations */
> +#define R_AARCH64_COPY         1024
> +#define R_AARCH64_GLOB_DAT     1025
> +#define R_AARCH64_JUMP_SLOT    1026
> +#define R_AARCH64_RELATIVE     1027
> +#define R_AARCH64_TLS_DTPREL64 1028
> +#define R_AARCH64_TLS_DTPMOD64 1029
> +#define R_AARCH64_TLS_TPREL64  1030
> +#define R_AARCH64_TLS_DTPREL32 1031
> +#define R_AARCH64_TLS_DTPMOD32 1032
> +#define R_AARCH64_TLS_TPREL32  1033
> +
>  /* s390 relocations defined by the ABIs */
>  #define R_390_NONE             0       /* No reloc.  */
>  #define R_390_8                        1       /* Direct 8 bit.  */
> --
> 1.8.1
>
>
>