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Re: [Libunwind-devel] add methods to access full xmm registers on i386
From: |
David Mosberger-Tang |
Subject: |
Re: [Libunwind-devel] add methods to access full xmm registers on i386 |
Date: |
Mon, 7 Jan 2008 15:46:22 -0700 |
Andrew,
I think the patch Arun sent me already updates Gget_save_loc.c, but if
the GIT tree is missing anything, let me know.
Thanks,
--david
On 12/18/07, Andrew Cagney <address@hidden> wrote:
> Arun,
>
> Here's a revised patch that also updates GgetSave_loc.c. I don't have
> immediate plans for x86-64 - other things to look at.
>
> Andrew
>
> Arun Sharma wrote:
> > On Dec 12, 2007 5:48 PM, Arun Sharma <address@hidden
> > <mailto:address@hidden>> wrote:
> >
> > On Dec 11, 2007 9:38 PM, David Mosberger-Tang
> > <address@hidden <mailto:address@hidden>> wrote:
> >
> > Looks like a good change to me. Arun, if you're fine with it,
> > I'll
> > check it in (send a "Signed-off-by:" if you don't mind).
> >
> >
> > Yes, the change looks good to me. Andrew, are you planning to do
> > something similar for x86_64?
> >
> >
> > Andrew, could you patch src/x86/Gget_save_loc.c as well? Thanks.
> >
> > -Arun
> >
>
>
> commit a48660f75306bb4eb3667b9b1fdcaee184d636b8
> Author: Andrew Cagney <address@hidden>
> Date: Tue Dec 18 12:30:45 2007 -0500
>
> Add full sized XMM registers to X86.
>
> diff --git a/include/libunwind-x86.h b/include/libunwind-x86.h
> index 38664f9..1e321db 100644
> --- a/include/libunwind-x86.h
> +++ b/include/libunwind-x86.h
> @@ -48,7 +48,11 @@ extern "C" {
> typedef uint32_t unw_word_t;
> typedef int32_t unw_sword_t;
>
> -typedef long double unw_tdep_fpreg_t;
> +typedef union {
> + struct { uint8_t b[4]; } val32;
> + struct { uint8_t b[10]; } val80;
> + struct { uint8_t b[16]; } val128;
> +} unw_tdep_fpreg_t;
>
> typedef enum
> {
> @@ -131,7 +135,16 @@ typedef enum
> /* frame info (read-only) */
> UNW_X86_CFA,
>
> - UNW_TDEP_LAST_REG = UNW_X86_LDT,
> + UNW_X86_XMM0, /* scratch */
> + UNW_X86_XMM1, /* scratch */
> + UNW_X86_XMM2, /* scratch */
> + UNW_X86_XMM3, /* scratch */
> + UNW_X86_XMM4, /* scratch */
> + UNW_X86_XMM5, /* scratch */
> + UNW_X86_XMM6, /* scratch */
> + UNW_X86_XMM7, /* scratch */
> +
> + UNW_TDEP_LAST_REG = UNW_X86_XMM7,
>
> UNW_TDEP_IP = UNW_X86_EIP,
> UNW_TDEP_SP = UNW_X86_CFA,
> diff --git a/src/x86/Gget_save_loc.c b/src/x86/Gget_save_loc.c
> index 1bd3560..6e6f9dc 100644
> --- a/src/x86/Gget_save_loc.c
> +++ b/src/x86/Gget_save_loc.c
> @@ -94,6 +94,14 @@ unw_get_save_loc (unw_cursor_t *cursor, int reg,
> unw_save_loc_t *sloc)
> case UNW_X86_XMM6_hi:
> case UNW_X86_XMM7_lo:
> case UNW_X86_XMM7_hi:
> + case UNW_X86_XMM0:
> + case UNW_X86_XMM1:
> + case UNW_X86_XMM2:
> + case UNW_X86_XMM3:
> + case UNW_X86_XMM4:
> + case UNW_X86_XMM5:
> + case UNW_X86_XMM6:
> + case UNW_X86_XMM7:
> loc = x86_scratch_loc (c, reg);
> break;
>
> diff --git a/src/x86/Gregs.c b/src/x86/Gregs.c
> index 68afd37..78cfabc 100644
> --- a/src/x86/Gregs.c
> +++ b/src/x86/Gregs.c
> @@ -97,6 +97,17 @@ linux_scratch_loc (struct cursor *c, unw_regnum_t reg)
> is_fpstate = 1;
> off = LINUX_FPSTATE_XMM0_OFF + 8*(reg - UNW_X86_XMM0_lo);
> break;
> + case UNW_X86_XMM0:
> + case UNW_X86_XMM1:
> + case UNW_X86_XMM2:
> + case UNW_X86_XMM3:
> + case UNW_X86_XMM4:
> + case UNW_X86_XMM5:
> + case UNW_X86_XMM6:
> + case UNW_X86_XMM7:
> + is_fpstate = 1;
> + off = LINUX_FPSTATE_XMM0_OFF + 16*(reg - UNW_X86_XMM0);
> + break;
>
> case UNW_X86_FOP:
> case UNW_X86_TSS:
> @@ -235,6 +246,14 @@ tdep_access_fpreg (struct cursor *c, unw_regnum_t reg,
> unw_fpreg_t *valp,
> case UNW_X86_ST6:
> case UNW_X86_ST7:
> /* SSE fp registers */
> + case UNW_X86_XMM0:
> + case UNW_X86_XMM1:
> + case UNW_X86_XMM2:
> + case UNW_X86_XMM3:
> + case UNW_X86_XMM4:
> + case UNW_X86_XMM5:
> + case UNW_X86_XMM6:
> + case UNW_X86_XMM7:
> case UNW_X86_XMM0_lo:
> case UNW_X86_XMM0_hi:
> case UNW_X86_XMM1_lo:
> diff --git a/src/x86/is_fpreg.c b/src/x86/is_fpreg.c
> index 6dc5640..8f1536d 100644
> --- a/src/x86/is_fpreg.c
> +++ b/src/x86/is_fpreg.c
> @@ -29,5 +29,6 @@ PROTECTED int
> unw_is_fpreg (int regnum)
> {
> return ((regnum >= UNW_X86_ST0 && regnum <= UNW_X86_ST7)
> - || (regnum >= UNW_X86_XMM0_lo && regnum <= UNW_X86_XMM7_hi));
> + || (regnum >= UNW_X86_XMM0_lo && regnum <= UNW_X86_XMM7_hi)
> + || (regnum >= UNW_X86_XMM0 && regnum <= UNW_X86_XMM7));
> }
> diff --git a/src/x86/regname.c b/src/x86/regname.c
> index 824e213..2228510 100644
> --- a/src/x86/regname.c
> +++ b/src/x86/regname.c
> @@ -12,7 +12,9 @@ static const char *regname[] =
> "xmm6_lo", "xmm6_hi", "xmm7_lo", "xmm7_hi",
> "mxcsr",
> "gs", "fs", "es", "ds", "ss", "cs",
> - "tss", "ldt"
> + "tss", "ldt",
> + "cfi",
> + "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7",
> };
>
> PROTECTED const char *
>
>
--
Mosberger Consulting LLC, http://www.mosberger-consulting.com/
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