On Thu, Jan 07, 2010 at 10:46:59AM -0800, Richard Henderson wrote:
> There are places, like brcond2, where we know that the destination
> of a forward branch will be within 127 bytes.
>
> Add the R_386_PC8 relocation type to support this. Add a flag to
> tcg_out_jxx and tcg_out_brcond* to enable it. Set the flag in the
> brcond2 label_next branches; pass along the input flag otherwise.
>
> Signed-off-by: Richard Henderson <r...@twiddle.net>
> ---
> elf.h | 2 +
> tcg/i386/tcg-target.c | 116
> +++++++++++++++++++++++++++++++++----------------
> 2 files changed, 80 insertions(+), 38 deletions(-)
>
> diff --git a/elf.h b/elf.h
> index 11674d7..c84c8ab 100644
> --- a/elf.h
> +++ b/elf.h
> @@ -243,6 +243,8 @@ typedef struct {
> #define R_386_GOTOFF 9
> #define R_386_GOTPC 10
> #define R_386_NUM 11
> +/* Not a dynamic reloc, so not included in R_386_NUM. Used in TCG. */
> +#define R_386_PC8 23
>
> #define R_MIPS_NONE 0
> #define R_MIPS_16 1
> diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c
> index 972b102..e1691b3 100644
> --- a/tcg/i386/tcg-target.c
> +++ b/tcg/i386/tcg-target.c
> @@ -61,6 +61,12 @@ static void patch_reloc(uint8_t *code_ptr, int type,
> case R_386_PC32:
> *(uint32_t *)code_ptr = value - (long)code_ptr;
> break;
> + case R_386_PC8:
> + value -= (long)code_ptr;
> + if (value != (int8_t)value)
> + tcg_abort();
This does not conforms to CODING_STYLE, curly brackets are missing.
--
Aurelien Jarno GPG: 1024D/F1BCDB73
aurel...@aurel32.net http://www.aurel32.net
