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mipsN32: A modification suggestion to support mips N32

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Deng, Yimin (NSB - CN/Shanghai) 2018-04-18 03:12:45 +00:00 committed by Dave Watson
parent 2be1c2754a
commit fba2ae7b2c
4 changed files with 19 additions and 2 deletions
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2
include/libunwind-mips.h
View file

@ -98,7 +98,7 @@ typedef enum
UNW_MIPS_R30,
UNW_MIPS_R31,
UNW_MIPS_PC = 34,
UNW_MIPS_PC = 64,
/* FIXME: Other registers! */

8
include/tdep-mips/libunwind_i.h
View file

@ -247,6 +247,14 @@ dwarf_get (struct dwarf_cursor *c, dwarf_loc_t loc, unw_word_t *val)
0, c->as_arg);
else if (c->as->abi == UNW_MIPS_ABI_O32)
return read_s32 (c, DWARF_GET_LOC (loc), val);
else if (c->as->abi == UNW_MIPS_ABI_N32) {
if (tdep_big_endian(c->as))
return (*c->as->acc.access_mem) (c->as, DWARF_GET_LOC (loc) + 4, val,
0, c->as_arg);
else
return (*c->as->acc.access_mem) (c->as, DWARF_GET_LOC (loc), val,
0, c->as_arg);
}
else
return (*c->as->acc.access_mem) (c->as, DWARF_GET_LOC (loc), val,
0, c->as_arg);

8
src/mips/Gcreate_addr_space.c
View file

@ -58,7 +58,15 @@ unw_create_addr_space (unw_accessors_t *a, int byte_order)
as->big_endian = (byte_order == __BIG_ENDIAN);
/* FIXME! There is no way to specify the ABI. */
#if _MIPS_SIM == _ABIO32
as->abi = UNW_MIPS_ABI_O32;
#elif _MIPS_SIM == _ABIN32
as->abi = UNW_MIPS_ABI_N32;
#elif _MIPS_SIM == _ABI64
as->abi = UNW_MIPS_ABI_N64;
#else
# error Unsupported ABI
#endif
as->addr_size = 4;
return as;

3
src/mips/Gregs.c
View file

@ -63,7 +63,7 @@ tdep_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
case UNW_MIPS_R26:
case UNW_MIPS_R27:
case UNW_MIPS_R28:
case UNW_MIPS_R29:
case UNW_MIPS_R30:
case UNW_MIPS_R31:
loc = c->dwarf.loc[reg - UNW_MIPS_R0];
@ -75,6 +75,7 @@ tdep_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
loc = c->dwarf.loc[reg];
break;
case UNW_MIPS_R29:
case UNW_MIPS_CFA:
if (write)
return -UNW_EREADONLYREG;