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From Peter Schauer: Fix Solaris/x86 threads by copying linux code.

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This commit is contained in:
Andrew Cagney 2000-02-29 13:53:59 +00:00
parent b241ba8eab
commit 05e28a7bbf
4 changed files with 18 additions and 64 deletions
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53
gdb/sol-thread.c
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@ -1318,61 +1318,24 @@ ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid,
#ifdef TM_I386SOL2_H
/* Get local descriptor table. */
#include <sys/procfs.h>
#include <sys/reg.h>
#include <sys/sysi86.h>
static int nldt_allocated = 0;
static struct ssd *ldt_bufp = NULL;
/* Reads the local descriptor table of a LWP. */
ps_err_e
ps_lgetLDT (gdb_ps_prochandle_t ph, lwpid_t lwpid,
struct ssd *pldt)
{
gregset_t gregset;
int lwp_fd;
ps_err_e val;
int nldt;
int i;
/* NOTE: only used on Solaris, therefore OK to refer to procfs.c */
extern struct ssd *procfs_find_LDT_entry (int);
struct ssd *ret;
/* Get procfs file descriptor for the LWP. */
lwp_fd = procfs_get_pid_fd (BUILD_LWP (lwpid, PIDGET (inferior_pid)));
if (lwp_fd < 0)
return PS_BADLID;
/* Fetch registers und LDT descriptors. */
if (ioctl (lwp_fd, PIOCGREG, &gregset) == -1)
return PS_ERR;
if (ioctl (lwp_fd, PIOCNLDT, &nldt) == -1)
return PS_ERR;
if (nldt_allocated < nldt)
ret = procfs_find_LDT_entry (BUILD_LWP (lwpid, PIDGET (inferior_pid)));
if (ret)
{
ldt_bufp
= (struct ssd *) xrealloc (ldt_bufp, (nldt + 1) * sizeof (struct ssd));
nldt_allocated = nldt;
memcpy (pldt, ret, sizeof (struct ssd));
return PS_OK;
}
if (ioctl (lwp_fd, PIOCLDT, ldt_bufp) == -1)
else /* LDT not found. */
return PS_ERR;
/* Search LDT for the LWP via register GS. */
for (i = 0; i < nldt; i++)
{
if (ldt_bufp[i].sel == (gregset[GS] & 0xffff))
{
*pldt = ldt_bufp[i];
return PS_OK;
}
}
/* LDT not found. */
return PS_ERR;
}
#endif /* TM_I386SOL2_H */