#include <signal.h>
#include <sys/ucontext.h>
#include <unistd.h>
#define MD_FALLBACK_FRAME_STATE_FOR pa_fallback_frame_state
#ifndef GetSSReg
#define GetSSReg(ssp, ss_reg) \
((UseWideRegs (ssp)) \
? (ssp)->ss_wide.ss_32.ss_reg ## _lo \
: (ssp)->ss_narrow.ss_reg)
#endif
#if TARGET_64BIT
#define GetSSRegAddr(ssp, ss_reg) ((long) &((ssp)->ss_wide.ss_64.ss_reg))
#else
#define GetSSRegAddr(ssp, ss_reg) \
((UseWideRegs (ssp)) \
? (long) &((ssp)->ss_wide.ss_32.ss_reg ## _lo) \
: (long) &((ssp)->ss_narrow.ss_reg))
#endif
#define UPDATE_FS_FOR_SAR(FS, N) \
(FS)->regs.reg[N].how = REG_SAVED_OFFSET; \
(FS)->regs.reg[N].loc.offset = GetSSRegAddr (mc, ss_cr11) - new_cfa
#define UPDATE_FS_FOR_GR(FS, GRN, N) \
(FS)->regs.reg[N].how = REG_SAVED_OFFSET; \
(FS)->regs.reg[N].loc.offset = GetSSRegAddr (mc, ss_gr##GRN) - new_cfa
#define UPDATE_FS_FOR_FR(FS, FRN, N) \
(FS)->regs.reg[N].how = REG_SAVED_OFFSET; \
(FS)->regs.reg[N].loc.offset = (long) &(mc->ss_fr##FRN) - new_cfa;
#define UPDATE_FS_FOR_PC(FS, N) \
(FS)->regs.reg[N].how = REG_SAVED_OFFSET; \
(FS)->regs.reg[N].loc.offset = GetSSRegAddr (mc, ss_pcoq_head) - new_cfa
#define GET_FIELD(X, FROM, TO) \
((X) >> (31 - (TO)) & ((1 << ((TO) - (FROM) + 1)) - 1))
static inline int
sign_extend (int x, int len)
{
int signbit = (1 << (len - 1));
int mask = (signbit << 1) - 1;
return ((x & mask) ^ signbit) - signbit;
}
static inline int
extract_17 (unsigned word)
{
return sign_extend (GET_FIELD (word, 19, 28)
| GET_FIELD (word, 29, 29) << 10
| GET_FIELD (word, 11, 15) << 11
| (word & 0x1) << 16, 17);
}
static inline int
extract_22 (unsigned word)
{
return sign_extend (GET_FIELD (word, 19, 28)
| GET_FIELD (word, 29, 29) << 10
| GET_FIELD (word, 11, 15) << 11
| GET_FIELD (word, 6, 10) << 16
| (word & 0x1) << 21, 22);
}
static _Unwind_Reason_Code
pa_fallback_frame_state (struct _Unwind_Context *context,
_Unwind_FrameState *fs)
{
static long cpu;
unsigned int *pc = (unsigned int *) context->ra;
if (pc == 0)
return _URC_END_OF_STACK;
if (!TARGET_64BIT
&& *(pc + 0) == 0x2fd01224
&& *(pc + 1) == 0x0fd9109d
&& *(pc + 2) == 0x0fd130bc)
pc += 3;
else if (!TARGET_64BIT
&& *(pc + 0) == 0x27d01224
&& *(pc + 1) == 0x0fd130bc)
pc += 2;
else if (!TARGET_64BIT
&& *(pc + 0) == 0x0fdc12b0
&& *(pc + 1) == 0x0fdd1299
&& *(pc + 2) == 0x2fd13024)
pc += 3;
else if (!TARGET_64BIT
&& *(pc + 0) == 0x0fdc12b0
&& *(pc + 1) == 0x27d13024)
pc += 2;
if ((!TARGET_64BIT
&& *(pc + 0) == 0x4bc23fd1
&& *(pc + 1) == 0x004010a1
&& *(pc + 2) == 0x00011820
&& *(pc + 3) == 0xe0400002)
||
(!TARGET_64BIT
&& *(pc + 0) == 0x4bc23fd1
&& *(pc + 1) == 0xe840d002))
{
fs->cfa_how = CFA_REG_OFFSET;
fs->cfa_reg = 30;
fs->cfa_offset = 0;
fs->retaddr_column = 0;
fs->regs.reg[0].how = REG_SAVED_OFFSET;
fs->regs.reg[0].loc.offset = -24;
uw_update_context (context, fs);
return uw_frame_state_for (context, fs);
}
else if (!TARGET_64BIT
&& *(pc + 0) == 0x0fd11082
&& (*(pc + 1) == 0xe840c002
|| *(pc + 1) == 0xe840d002))
{
fs->cfa_how = CFA_REG_OFFSET;
fs->cfa_reg = 30;
fs->cfa_offset = 0;
fs->retaddr_column = 0;
fs->regs.reg[0].how = REG_SAVED_OFFSET;
fs->regs.reg[0].loc.offset = -8;
uw_update_context (context, fs);
return uw_frame_state_for (context, fs);
}
if (!TARGET_64BIT
&& (*pc & 0xffe0e002) == 0xe8400000
&& *(pc + 1) == 0x08000240
&& *(pc + 2) == 0x4bc23fd1
&& *(pc + 3) == 0x004010a1
&& *(pc + 4) == 0x00011820
&& *(pc + 5) == 0xe0400002)
pc += extract_17 (*pc) + 2;
else if (!TARGET_64BIT
&& (*pc & 0xfc00e002) == 0xe800a000
&& *(pc + 1) == 0x08000240
&& *(pc + 2) == 0x4bc23fd1
&& *(pc + 3) == 0xe840d002)
pc += extract_22 (*pc) + 2;
if ((TARGET_64BIT
&& *(pc + 0) == 0x53db3f51
&& *(pc + 8) == 0x34160116
&& *(pc + 9) == 0x08360ac1
&& *(pc + 10) == 0x0c2010c1
&& *(pc + 11) == 0xe4202000)
||
(TARGET_64BIT
&& *(pc + 0) == 0x36dc0000
&& *(pc + 6) == 0x341601c0
&& *(pc + 7) == 0x08360ac1
&& *(pc + 8) == 0x0c2010c1
&& *(pc + 9) == 0xe4202000)
||
(!TARGET_64BIT
&& *(pc + 0) == 0x379a0000
&& *(pc + 1) == 0x6bd33fc9
&& *(pc + 2) == 0x20200801
&& *(pc + 3) == 0xe420e008
&& *(pc + 4) == 0x34160116)
||
(!TARGET_64BIT
&& *(pc + 0) == 0x6bd33fc9
&& *(pc + 1) == 0x20200801
&& *(pc + 2) == 0xe420e008
&& *(pc + 3) == 0x341601c0))
{
struct siglocalx *sl = (struct siglocalx *)
(*((long *) context->cfa - 1));
mcontext_t *mc = &(sl->sl_uc.uc_mcontext);
long new_cfa = GetSSReg (mc, ss_sp);
fs->cfa_how = CFA_REG_OFFSET;
fs->cfa_reg = 30;
fs->cfa_offset = new_cfa - (long) context->cfa;
UPDATE_FS_FOR_GR (fs, 1, 1);
UPDATE_FS_FOR_GR (fs, 2, 2);
UPDATE_FS_FOR_GR (fs, 3, 3);
UPDATE_FS_FOR_GR (fs, 4, 4);
UPDATE_FS_FOR_GR (fs, 5, 5);
UPDATE_FS_FOR_GR (fs, 6, 6);
UPDATE_FS_FOR_GR (fs, 7, 7);
UPDATE_FS_FOR_GR (fs, 8, 8);
UPDATE_FS_FOR_GR (fs, 9, 9);
UPDATE_FS_FOR_GR (fs, 10, 10);
UPDATE_FS_FOR_GR (fs, 11, 11);
UPDATE_FS_FOR_GR (fs, 12, 12);
UPDATE_FS_FOR_GR (fs, 13, 13);
UPDATE_FS_FOR_GR (fs, 14, 14);
UPDATE_FS_FOR_GR (fs, 15, 15);
UPDATE_FS_FOR_GR (fs, 16, 16);
UPDATE_FS_FOR_GR (fs, 17, 17);
UPDATE_FS_FOR_GR (fs, 18, 18);
UPDATE_FS_FOR_GR (fs, 19, 19);
UPDATE_FS_FOR_GR (fs, 20, 20);
UPDATE_FS_FOR_GR (fs, 21, 21);
UPDATE_FS_FOR_GR (fs, 22, 22);
UPDATE_FS_FOR_GR (fs, 23, 23);
UPDATE_FS_FOR_GR (fs, 24, 24);
UPDATE_FS_FOR_GR (fs, 25, 25);
UPDATE_FS_FOR_GR (fs, 26, 26);
UPDATE_FS_FOR_GR (fs, 27, 27);
UPDATE_FS_FOR_GR (fs, 28, 28);
UPDATE_FS_FOR_GR (fs, 29, 29);
UPDATE_FS_FOR_GR (fs, 30, 30);
UPDATE_FS_FOR_GR (fs, 31, 31);
if (TARGET_64BIT)
{
UPDATE_FS_FOR_FR (fs, 4, 32);
UPDATE_FS_FOR_FR (fs, 5, 33);
UPDATE_FS_FOR_FR (fs, 6, 34);
UPDATE_FS_FOR_FR (fs, 7, 35);
UPDATE_FS_FOR_FR (fs, 8, 36);
UPDATE_FS_FOR_FR (fs, 9, 37);
UPDATE_FS_FOR_FR (fs, 10, 38);
UPDATE_FS_FOR_FR (fs, 11, 39);
UPDATE_FS_FOR_FR (fs, 12, 40);
UPDATE_FS_FOR_FR (fs, 13, 41);
UPDATE_FS_FOR_FR (fs, 14, 42);
UPDATE_FS_FOR_FR (fs, 15, 43);
UPDATE_FS_FOR_FR (fs, 16, 44);
UPDATE_FS_FOR_FR (fs, 17, 45);
UPDATE_FS_FOR_FR (fs, 18, 46);
UPDATE_FS_FOR_FR (fs, 19, 47);
UPDATE_FS_FOR_FR (fs, 20, 48);
UPDATE_FS_FOR_FR (fs, 21, 49);
UPDATE_FS_FOR_FR (fs, 22, 50);
UPDATE_FS_FOR_FR (fs, 23, 51);
UPDATE_FS_FOR_FR (fs, 24, 52);
UPDATE_FS_FOR_FR (fs, 25, 53);
UPDATE_FS_FOR_FR (fs, 26, 54);
UPDATE_FS_FOR_FR (fs, 27, 55);
UPDATE_FS_FOR_FR (fs, 28, 56);
UPDATE_FS_FOR_FR (fs, 29, 57);
UPDATE_FS_FOR_FR (fs, 30, 58);
UPDATE_FS_FOR_FR (fs, 31, 59);
UPDATE_FS_FOR_SAR (fs, 60);
}
else
{
UPDATE_FS_FOR_FR (fs, 4, 32);
UPDATE_FS_FOR_FR (fs, 5, 34);
UPDATE_FS_FOR_FR (fs, 6, 36);
UPDATE_FS_FOR_FR (fs, 7, 38);
UPDATE_FS_FOR_FR (fs, 8, 40);
UPDATE_FS_FOR_FR (fs, 9, 44);
UPDATE_FS_FOR_FR (fs, 10, 44);
UPDATE_FS_FOR_FR (fs, 11, 46);
UPDATE_FS_FOR_FR (fs, 12, 48);
UPDATE_FS_FOR_FR (fs, 13, 50);
UPDATE_FS_FOR_FR (fs, 14, 52);
UPDATE_FS_FOR_FR (fs, 15, 54);
if (!cpu)
cpu = sysconf (_SC_CPU_VERSION);
if (cpu != CPU_PA_RISC1_0)
{
UPDATE_FS_FOR_FR (fs, 16, 56);
UPDATE_FS_FOR_FR (fs, 17, 58);
UPDATE_FS_FOR_FR (fs, 18, 60);
UPDATE_FS_FOR_FR (fs, 19, 62);
UPDATE_FS_FOR_FR (fs, 20, 64);
UPDATE_FS_FOR_FR (fs, 21, 66);
UPDATE_FS_FOR_FR (fs, 22, 68);
UPDATE_FS_FOR_FR (fs, 23, 70);
UPDATE_FS_FOR_FR (fs, 24, 72);
UPDATE_FS_FOR_FR (fs, 25, 74);
UPDATE_FS_FOR_FR (fs, 26, 76);
UPDATE_FS_FOR_FR (fs, 27, 78);
UPDATE_FS_FOR_FR (fs, 28, 80);
UPDATE_FS_FOR_FR (fs, 29, 82);
UPDATE_FS_FOR_FR (fs, 30, 84);
UPDATE_FS_FOR_FR (fs, 31, 86);
}
UPDATE_FS_FOR_SAR (fs, 88);
}
fs->retaddr_column = DWARF_ALT_FRAME_RETURN_COLUMN;
UPDATE_FS_FOR_PC (fs, DWARF_ALT_FRAME_RETURN_COLUMN);
return _URC_NO_REASON;
}
return _URC_END_OF_STACK;
}