#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <dwarf.h>
#define BACKEND x86_64_
#include "libebl_CPU.h"
int
x86_64_abi_cfi (Ebl *ebl __attribute__ ((unused)), Dwarf_CIE *abi_info)
{
static const uint8_t abi_cfi[] =
{
/* Call-saved regs. */
DW_CFA_same_value, ULEB128_7 (0), /* %rbx */
DW_CFA_same_value, ULEB128_7 (6), /* %rbp */
DW_CFA_same_value, ULEB128_7 (12), /* %r12 */
DW_CFA_same_value, ULEB128_7 (13), /* %r13 */
DW_CFA_same_value, ULEB128_7 (14), /* %r14 */
DW_CFA_same_value, ULEB128_7 (15), /* %r15 */
DW_CFA_same_value, ULEB128_7 (16), /* %r16 */
/* The CFA is the SP. */
DW_CFA_val_offset, ULEB128_7 (7), ULEB128_7 (0),
};
abi_info->initial_instructions = abi_cfi;
abi_info->initial_instructions_end = &abi_cfi[sizeof abi_cfi];
abi_info->data_alignment_factor = 8;
#include <dwarf.h>
#define BACKEND ppc_
#include "libebl_CPU.h"
int
ppc_abi_cfi (Ebl *ebl __attribute__ ((unused)), Dwarf_CIE *abi_info)
{
static const uint8_t abi_cfi[] =
{
/* This instruction is provided in every CIE. It is not repeated here:
DW_CFA_def_cfa, ULEB128_7 (1), ULEB128_7 (0) */
/* r1 is assumed to be restored from cfa adress,
r1 acts as a stack frame pointer. */
DW_CFA_val_offset, ULEB128_7 (1), ULEB128_7 (0),
/* lr is not callee-saved but it needs to be preserved as it is pre-set
by the caller. */
DW_CFA_same_value, ULEB128_7 (65), /* lr */
/* Callee-saved regs. */
#define SV(n) DW_CFA_same_value, ULEB128_7 (n)
SV (2), /* r2 is TOC pointer. */
SV (13), /* Reserved as system thread id (is it for CFI?). */
/* r14-r31 are non-volatile registers. */
SV (14), SV (15), SV (16), SV (17), SV (18), SV (19), SV (20), SV (21),
SV (22), SV (23), SV (24), SV (25), SV (26), SV (27), SV (28), SV (29),
SV (30), SV (31)
/* VMX registers v20-v31 and vrsave are non-volatile but they are
assigned DWARF registers 1144-1156 (v20-v31) which is outside of the
CFI supported range. */
"DWARF for the ARM Architecture ABI r2.09"
http://infocenter.arm.com/help/topic/com.arm.doc.ihi0040b/IHI0040B_aadwarf.pdf
"Procedure Call Standard for the ARM Architecture ABI r2.09"
http://infocenter.arm.com/help/topic/com.arm.doc.ihi0042e/IHI0042E_aapcs.pdf
*/
int
arm_abi_cfi (Ebl *ebl __attribute__ ((unused)), Dwarf_CIE *abi_info)
{
static const uint8_t abi_cfi[] =
{
/* The initial Canonical Frame Address is the value of the
Stack Pointer (r13) as setup in the previous frame. */
DW_CFA_def_cfa, ULEB128_7 (13), ULEB128_7 (0),
/* The Stack Pointer (r13) is restored from CFA address by default. */
DW_CFA_val_offset, ULEB128_7 (13), ULEB128_7 (0),
#define SV(n) DW_CFA_same_value, ULEB128_7 (n)
/* Callee-saved regs r4-r8, r10, r11. */
SV (4), SV (5), SV (6), SV (7), SV (8), SV (10), SV (11),
/* The link register contains the return address setup by caller. */
SV (14),
DW_CFA_register, ULEB128_7 (15), ULEB128_7 (14), /* pc = lr */
#undef SV
/* VFP S16-S31/D8-D15/Q4-Q7 are callee saved.
And uleb128 encoded with two bytes. */
