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Add rotating register rename support.

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This commit is contained in:
Kevin Buettner 2000-09-06 07:43:37 +00:00
parent 50bbae350b
commit 3a854e237b
2 changed files with 41 additions and 1 deletions
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7
gdb/ChangeLog
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@ -1,3 +1,10 @@
2000-09-06 Kevin Buettner <kevinb@redhat.com>
* ia64-tdep.c (examine_prologue): Add rotating register rename
support for the general registers.
(ia64_get_saved_register): Add rotating register rename support
for the predicate registers and the floating-point registers.
2000-09-05 Kevin Buettner <kevinb@redhat.com>
* config/arm/tm-linux.h (arm_linux_sigcontext_register_address,

35
gdb/ia64-tdep.c
View File

@ -984,6 +984,13 @@ examine_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct frame_info *frame)
if (do_fsr_stuff) {
int i;
CORE_ADDR addr;
int sor, rrb_gr;
/* Extract the size of the rotating portion of the stack
frame and the register rename base from the current
frame marker. */
sor = ((frame->extra_info->cfm >> 14) & 0xf) * 8;
rrb_gr = (frame->extra_info->cfm >> 18) & 0x7f;
for (i = 0, addr = frame->extra_info->bsp;
i < frame->extra_info->sof;
@ -993,7 +1000,11 @@ examine_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct frame_info *frame)
{
addr += 8;
}
frame->saved_regs[IA64_GR32_REGNUM + i] = addr;
if (i < sor)
frame->saved_regs[IA64_GR32_REGNUM + ((i + (sor - rrb_gr)) % sor)]
= addr;
else
frame->saved_regs[IA64_GR32_REGNUM + i] = addr;
if (i+32 == cfm_reg)
frame->saved_regs[IA64_CFM_REGNUM] = addr;
@ -1125,6 +1136,16 @@ ia64_get_saved_register (char *raw_buffer,
int prN_val;
ia64_get_saved_register (pr_raw_buffer, &pr_optim, &pr_addr,
frame, IA64_PR_REGNUM, &pr_lval);
if (IA64_PR16_REGNUM <= regnum && regnum <= IA64_PR63_REGNUM)
{
/* Fetch predicate register rename base from current frame
marker for this frame. */
int rrb_pr = (frame->extra_info->cfm >> 32) & 0x3f;
/* Adjust the register number to account for register rotation. */
regnum = IA64_PR16_REGNUM
+ ((regnum - IA64_PR16_REGNUM) + rrb_pr) % 48;
}
prN_val = extract_bit_field ((unsigned char *) pr_raw_buffer,
regnum - IA64_PR0_REGNUM, 1);
store_unsigned_integer (raw_buffer, REGISTER_RAW_SIZE (regnum), prN_val);
@ -1215,6 +1236,18 @@ ia64_get_saved_register (char *raw_buffer,
}
else
{
if (IA64_FR32_REGNUM <= regnum && regnum <= IA64_FR127_REGNUM)
{
/* Fetch floating point register rename base from current
frame marker for this frame. */
int rrb_fr = (frame->extra_info->cfm >> 25) & 0x7f;
/* Adjust the floating point register number to account for
register rotation. */
regnum = IA64_FR32_REGNUM
+ ((regnum - IA64_FR32_REGNUM) + rrb_fr) % 96;
}
generic_get_saved_register (raw_buffer, optimized, addrp, frame,
regnum, lval);
}