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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2023-09-28 00:07:18 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2023-09-28 00:10:13 +0200 |
| commit | 29d4591b07a4da53320e949557c6946c62c26bde (patch) | |
| tree | ae703bab73f6185724e06996ee0c292dacb66d22 | |
| parent | 964d15a007d7fb1258f2ad7c8cf4afcfb9a65719 (diff) | |
| download | glibc-29d4591b07a4da53320e949557c6946c62c26bde.tar glibc-29d4591b07a4da53320e949557c6946c62c26bde.tar.gz glibc-29d4591b07a4da53320e949557c6946c62c26bde.tar.bz2 glibc-29d4591b07a4da53320e949557c6946c62c26bde.zip | |
hurd: Drop REG_GSFS and REG_ESDS from x86_64's ucontext
These are useless on x86_64, and __NGREG was actually wrong with them.
| -rw-r--r-- | sysdeps/mach/hurd/x86/trampoline.c | 4 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/x86_64/bits/sigcontext.h | 8 | ||||
| -rw-r--r-- | sysdeps/mach/x86/thread_state.h | 6 | ||||
| -rw-r--r-- | sysdeps/x86_64/sys/ucontext.h | 6 |
4 files changed, 8 insertions, 16 deletions
diff --git a/sysdeps/mach/hurd/x86/trampoline.c b/sysdeps/mach/hurd/x86/trampoline.c index 6318c9528a..bc3f15e1e0 100644 --- a/sysdeps/mach/hurd/x86/trampoline.c +++ b/sysdeps/mach/hurd/x86/trampoline.c @@ -79,8 +79,8 @@ static void fill_ucontext (ucontext_t *uc, const struct sigcontext *sc) /* Registers. */ #ifdef __x86_64__ - memcpy (&uc->uc_mcontext.gregs[REG_GSFS], &sc->sc_gs, - (REG_ERR - REG_GSFS) * sizeof (long)); + memcpy (&uc->uc_mcontext.gregs[REG_R8], &sc->sc_r8, + (REG_ERR - REG_R8) * sizeof (long)); #else memcpy (&uc->uc_mcontext.gregs[REG_GS], &sc->sc_gs, (REG_TRAPNO - REG_GS) * sizeof (int)); diff --git a/sysdeps/mach/hurd/x86_64/bits/sigcontext.h b/sysdeps/mach/hurd/x86_64/bits/sigcontext.h index 6396054463..7facc587b8 100644 --- a/sysdeps/mach/hurd/x86_64/bits/sigcontext.h +++ b/sysdeps/mach/hurd/x86_64/bits/sigcontext.h @@ -59,13 +59,7 @@ struct sigcontext } trampoline.c knows this, so it must be changed if this changes. */ -#define sc_i386_thread_state sc_gs /* Beginning of correspondence. */ - /* Segment registers. */ - int sc_gs; - int sc_fs; - int sc_es; - int sc_ds; - +#define sc_i386_thread_state sc_r8 /* Beginning of correspondence. */ long sc_r8; long sc_r9; long sc_r10; diff --git a/sysdeps/mach/x86/thread_state.h b/sysdeps/mach/x86/thread_state.h index 8c419515f9..e237e46cb2 100644 --- a/sysdeps/mach/x86/thread_state.h +++ b/sysdeps/mach/x86/thread_state.h @@ -34,12 +34,13 @@ #define PC rip #define SP ursp #define SYSRETURN rax +#define MACHINE_THREAD_STATE_FIX_NEW(ts) do { \ + asm ("mov %%cs, %w0" : "=q" ((ts)->cs)); \ +} while(0) #else #define PC eip #define SP uesp #define SYSRETURN eax -#endif - #define MACHINE_THREAD_STATE_FIX_NEW(ts) do { \ asm ("mov %%cs, %w0" : "=q" ((ts)->cs)); \ asm ("mov %%ds, %w0" : "=q" ((ts)->ds)); \ @@ -47,6 +48,7 @@ asm ("mov %%fs, %w0" : "=q" ((ts)->fs)); \ asm ("mov %%gs, %w0" : "=q" ((ts)->gs)); \ } while(0) +#endif struct machine_thread_all_state { diff --git a/sysdeps/x86_64/sys/ucontext.h b/sysdeps/x86_64/sys/ucontext.h index d73a893795..f1b6be77a7 100644 --- a/sysdeps/x86_64/sys/ucontext.h +++ b/sysdeps/x86_64/sys/ucontext.h @@ -47,11 +47,7 @@ typedef greg_t gregset_t[__NGREG]; /* Number of each register in the `gregset_t' array. */ enum { - REG_GSFS = 0, /* Actually int gs, fs. */ -# define REG_GSFS REG_GSFS - REG_ESDS, /* Actually int es, ds. */ -# define REG_ESDS REG_ESDS - REG_R8, + REG_R8 = 0, # define REG_R8 REG_R8 REG_R9, # define REG_R9 REG_R9 |