m2-internship/libunwind-eh_elf
1
0
Fork 0
mirror of https://github.com/tobast/libunwind-eh_elf.git synced 2024-11-17 21:47:37 +01:00
Code Issues Releases Activity

Rename: src/ia64/Lget_save_loc.c -> src/ia64/Gget_save_loc.c

Browse source 
(Logical change 1.30)
This commit is contained in:
mostang.com!davidm 2002-12-12 09:17:41 +00:00
parent 4a23fc2d5e
commit 1381978b0e
1 changed files with 149 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

149
src/ia64/Gget_save_loc.c
View file

@ -0,0 +1,149 @@
#include <assert.h>
#include "offsets.h"
#include "regs.h"
#include "rse.h"
int
unw_get_save_loc (unw_cursor_t *cursor, int reg, unw_save_loc_t *sloc)
{
struct ia64_cursor *c = (struct ia64_cursor *) cursor;
unw_word_t loc, reg_loc, nat_loc;
loc = 0; /* default to "not saved" */
switch (reg)
{
/* frame registers */
case UNW_IA64_BSP:
case UNW_REG_SP:
default:
break;
case UNW_REG_IP:
loc = c->ip_loc;
break;
/* preserved registers: */
case UNW_IA64_GR + 4 ... UNW_IA64_GR + 7:
loc = (&c->r4_loc)[reg - (UNW_IA64_GR + 4)];
break;
case UNW_IA64_NAT + 4 ... UNW_IA64_NAT + 7:
loc = (&c->nat4_loc)[reg - (UNW_IA64_NAT + 4)];
reg_loc = (&c->r4_loc)[reg - (UNW_IA64_NAT + 4)];
if (IA64_IS_FP_LOC (reg_loc))
/* NaT bit saved as a NaTVal. */
loc = reg_loc;
else if (IA64_IS_MEMSTK_NAT (loc))
loc = IA64_GET_LOC (loc) << 3;
else
{
reg = IA64_GET_LOC (loc);
assert (reg >= 0 && reg < 128);
if (!reg)
loc = 0;
else if (reg >= 4 && reg <= 7)
{
#ifdef UNW_LOCAL_ONLY
ucontext_t *uc = c->as_arg;
loc = uc->uc_mcontext.sc_nat;
#else
loc = IA64_REG_LOC (c, UNW_IA64_NAT + reg);
#endif
}
else if (reg >= 32)
{
loc = ia64_rse_rnat_addr (reg_loc); /* XXX looks wrong */
if (nat_loc >= c->rbs_top)
nat_loc = c->top_rnat_loc;
}
else if (c->sigcontext_loc)
{
/* NaT bit is saved in a sigcontext. */
loc = c->sigcontext_loc + SIGCONTEXT_NAT_OFF;
}
}
break;
case UNW_IA64_AR_BSP: loc = c->bsp_loc; break;
case UNW_IA64_AR_BSPSTORE: loc = c->bspstore_loc; break;
case UNW_IA64_AR_PFS: loc = c->pfs_loc; break;
case UNW_IA64_AR_RNAT: loc = c->rnat_loc; break;
case UNW_IA64_AR_UNAT: loc = c->unat_loc; break;
case UNW_IA64_AR_LC: loc = c->lc_loc; break;
case UNW_IA64_AR_FPSR: loc = c->fpsr_loc; break;
case UNW_IA64_BR + 1: loc = c->b1_loc; break;
case UNW_IA64_BR + 2: loc = c->b2_loc; break;
case UNW_IA64_BR + 3: loc = c->b3_loc; break;
case UNW_IA64_BR + 4: loc = c->b4_loc; break;
case UNW_IA64_BR + 5: loc = c->b5_loc; break;
case UNW_IA64_CFM: loc = c->cfm_loc; break;
case UNW_IA64_PR: loc = c->pr_loc; break;
break;
case UNW_IA64_GR + 32 ... UNW_IA64_GR + 127: /* stacked reg */
reg = rotate_gr (c, reg - UNW_IA64_GR) + UNW_IA64_GR;
loc = ia64_rse_skip_regs (c->bsp, reg - (UNW_IA64_GR + 32));
break;
case UNW_IA64_NAT + 32 ... UNW_IA64_NAT + 127: /* stacked reg */
reg = rotate_gr (c, reg - UNW_IA64_NAT) + UNW_IA64_NAT;
loc = ia64_rse_skip_regs (c->bsp, reg - (UNW_IA64_NAT + 32));
loc = ia64_rse_rnat_addr (loc);
if (loc > c->rbs_top)
loc = c->top_rnat_loc;
break;
case UNW_IA64_AR_EC:
loc = c->cfm_loc;
break;
/* scratch & special registers: */
case UNW_IA64_GR + 0:
case UNW_IA64_GR + 1: /* global pointer */
case UNW_IA64_NAT + 0:
case UNW_IA64_NAT + 1: /* global pointer */
break;
case UNW_IA64_NAT + 2 ... UNW_IA64_NAT + 3:
case UNW_IA64_NAT + 8 ... UNW_IA64_NAT + 31:
loc = ia64_scratch_loc (c, reg);
break;
case UNW_IA64_GR + 2 ... UNW_IA64_GR + 3:
case UNW_IA64_GR + 8 ... UNW_IA64_GR + 31:
case UNW_IA64_BR + 0:
case UNW_IA64_BR + 6:
case UNW_IA64_BR + 7:
case UNW_IA64_AR_RSC:
case UNW_IA64_AR_25:
case UNW_IA64_AR_26:
case UNW_IA64_AR_CCV:
loc = ia64_scratch_loc (c, reg);
break;
}
memset (sloc, 0, sizeof (sloc));
if (!loc)
{
sloc->type = UNW_SLT_NONE;
return 0;
}
#if !defined(UNW_LOCAL_ONLY)
if (IA64_IS_REG_LOC (loc))
{
sloc->type = UNW_SLT_REG;
sloc->u.regnum = IA64_GET_LOC (loc);
}
else
#endif
{
sloc->type = UNW_SLT_MEMORY;
sloc->u.addr = loc;
}
return 0;
}