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Rename: src/x86/Gregs-x86.c -> src/x86/Gregs.c
}(Logical change 1.241)
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homeip.net!davidm
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1 changed files with 0 additions and 246 deletions
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/* libunwind - a platform-independent unwind library
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Copyright (c) 2002-2004 Hewlett-Packard Development Company, L.P.
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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This file is part of libunwind.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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#include "offsets.h"
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#include "unwind_i.h"
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static inline dwarf_loc_t
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linux_scratch_loc (struct cursor *c, unw_regnum_t reg)
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{
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unw_word_t addr = c->sigcontext_addr, fpstate_addr, off;
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int ret, is_fpstate = 0;
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switch (c->sigcontext_format)
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{
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case X86_SCF_NONE:
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return DWARF_REG_LOC (&c->dwarf, reg);
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case X86_SCF_LINUX_SIGFRAME:
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break;
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case X86_SCF_LINUX_RT_SIGFRAME:
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addr += LINUX_UC_MCONTEXT_OFF;
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break;
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}
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switch (reg)
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{
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case UNW_X86_GS: off = LINUX_SC_GS_OFF; break;
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case UNW_X86_FS: off = LINUX_SC_FS_OFF; break;
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case UNW_X86_ES: off = LINUX_SC_ES_OFF; break;
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case UNW_X86_DS: off = LINUX_SC_DS_OFF; break;
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case UNW_X86_EDI: off = LINUX_SC_EDI_OFF; break;
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case UNW_X86_ESI: off = LINUX_SC_ESI_OFF; break;
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case UNW_X86_EBP: off = LINUX_SC_EBP_OFF; break;
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case UNW_X86_ESP: off = LINUX_SC_ESP_OFF; break;
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case UNW_X86_EBX: off = LINUX_SC_EBX_OFF; break;
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case UNW_X86_EDX: off = LINUX_SC_EDX_OFF; break;
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case UNW_X86_ECX: off = LINUX_SC_ECX_OFF; break;
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case UNW_X86_EAX: off = LINUX_SC_EAX_OFF; break;
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case UNW_X86_TRAPNO: off = LINUX_SC_TRAPNO_OFF; break;
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case UNW_X86_EIP: off = LINUX_SC_EIP_OFF; break;
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case UNW_X86_CS: off = LINUX_SC_CS_OFF; break;
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case UNW_X86_EFLAGS: off = LINUX_SC_EFLAGS_OFF; break;
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case UNW_X86_SS: off = LINUX_SC_SS_OFF; break;
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/* The following is probably not correct for all possible cases.
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Somebody who understands this better should review this for
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correctness. */
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case UNW_X86_FCW: is_fpstate = 1; off = LINUX_FPSTATE_CW_OFF; break;
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case UNW_X86_FSW: is_fpstate = 1; off = LINUX_FPSTATE_SW_OFF; break;
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case UNW_X86_FTW: is_fpstate = 1; off = LINUX_FPSTATE_TAG_OFF; break;
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case UNW_X86_FCS: is_fpstate = 1; off = LINUX_FPSTATE_CSSEL_OFF; break;
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case UNW_X86_FIP: is_fpstate = 1; off = LINUX_FPSTATE_IPOFF_OFF; break;
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case UNW_X86_FEA: is_fpstate = 1; off = LINUX_FPSTATE_DATAOFF_OFF; break;
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case UNW_X86_FDS: is_fpstate = 1; off = LINUX_FPSTATE_DATASEL_OFF; break;
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case UNW_X86_MXCSR: is_fpstate = 1; off = LINUX_FPSTATE_MXCSR_OFF; break;
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/* stacked fp registers */
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case UNW_X86_ST0: case UNW_X86_ST1: case UNW_X86_ST2: case UNW_X86_ST3:
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case UNW_X86_ST4: case UNW_X86_ST5: case UNW_X86_ST6: case UNW_X86_ST7:
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is_fpstate = 1;
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off = LINUX_FPSTATE_ST0_OFF + 10*(reg - UNW_X86_ST0);
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break;
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/* SSE fp registers */
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case UNW_X86_XMM0_lo: case UNW_X86_XMM0_hi:
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case UNW_X86_XMM1_lo: case UNW_X86_XMM1_hi:
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case UNW_X86_XMM2_lo: case UNW_X86_XMM2_hi:
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case UNW_X86_XMM3_lo: case UNW_X86_XMM3_hi:
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case UNW_X86_XMM4_lo: case UNW_X86_XMM4_hi:
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case UNW_X86_XMM5_lo: case UNW_X86_XMM5_hi:
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case UNW_X86_XMM6_lo: case UNW_X86_XMM6_hi:
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case UNW_X86_XMM7_lo: case UNW_X86_XMM7_hi:
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is_fpstate = 1;
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off = LINUX_FPSTATE_XMM0_OFF + 8*(reg - UNW_X86_XMM0_lo);
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break;
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case UNW_X86_FOP:
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case UNW_X86_TSS:
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case UNW_X86_LDT:
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default:
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return DWARF_REG_LOC (&c->dwarf, reg);
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}
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if (is_fpstate)
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{
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if ((ret = dwarf_get (&c->dwarf,
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DWARF_MEM_LOC (&c->dwarf,
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addr + LINUX_SC_FPSTATE_OFF),
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&fpstate_addr)) < 0)
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return DWARF_NULL_LOC;
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if (!fpstate_addr)
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return DWARF_NULL_LOC;
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return DWARF_MEM_LOC (c, fpstate_addr + off);
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}
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else
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return DWARF_MEM_LOC (c, addr + off);
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}
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HIDDEN dwarf_loc_t
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x86_scratch_loc (struct cursor *c, unw_regnum_t reg)
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{
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if (c->sigcontext_addr)
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return linux_scratch_loc (c, reg);
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else
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return DWARF_REG_LOC (&c->dwarf, reg);
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}
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HIDDEN int
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tdep_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
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int write)
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{
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dwarf_loc_t loc = DWARF_NULL_LOC;
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switch (reg)
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{
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case UNW_X86_EIP:
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if (write)
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c->dwarf.ip = *valp; /* also update the EIP cache */
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loc = c->dwarf.loc[EIP];
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break;
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case UNW_X86_CFA:
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if (write)
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return -UNW_EREADONLYREG;
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*valp = c->dwarf.cfa;
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return 0;
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case UNW_X86_EAX: loc = c->dwarf.loc[EAX]; break;
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case UNW_X86_ECX: loc = c->dwarf.loc[ECX]; break;
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case UNW_X86_EDX: loc = c->dwarf.loc[EDX]; break;
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case UNW_X86_EBX: loc = c->dwarf.loc[EBX]; break;
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case UNW_X86_ESP: loc = c->dwarf.loc[ESP]; break;
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case UNW_X86_EBP: loc = c->dwarf.loc[EBP]; break;
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case UNW_X86_ESI: loc = c->dwarf.loc[ESI]; break;
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case UNW_X86_EDI: loc = c->dwarf.loc[EDI]; break;
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case UNW_X86_EFLAGS: loc = c->dwarf.loc[EFLAGS]; break;
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case UNW_X86_TRAPNO: loc = c->dwarf.loc[TRAPNO]; break;
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case UNW_X86_FCW:
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case UNW_X86_FSW:
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case UNW_X86_FTW:
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case UNW_X86_FOP:
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case UNW_X86_FCS:
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case UNW_X86_FIP:
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case UNW_X86_FEA:
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case UNW_X86_FDS:
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case UNW_X86_MXCSR:
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case UNW_X86_GS:
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case UNW_X86_FS:
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case UNW_X86_ES:
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case UNW_X86_DS:
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case UNW_X86_SS:
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case UNW_X86_CS:
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case UNW_X86_TSS:
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case UNW_X86_LDT:
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loc = x86_scratch_loc (c, reg);
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break;
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default:
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Debug (1, "bad register number %u\n", reg);
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return -UNW_EBADREG;
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}
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if (write)
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return dwarf_put (&c->dwarf, loc, *valp);
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else
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return dwarf_get (&c->dwarf, loc, valp);
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}
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HIDDEN int
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tdep_access_fpreg (struct cursor *c, unw_regnum_t reg, unw_fpreg_t *valp,
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int write)
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{
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struct dwarf_loc loc = DWARF_NULL_LOC;
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switch (reg)
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{
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case UNW_X86_ST0:
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loc = c->dwarf.loc[ST0];
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break;
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/* stacked fp registers */
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case UNW_X86_ST1:
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case UNW_X86_ST2:
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case UNW_X86_ST3:
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case UNW_X86_ST4:
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case UNW_X86_ST5:
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case UNW_X86_ST6:
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case UNW_X86_ST7:
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/* SSE fp registers */
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case UNW_X86_XMM0_lo:
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case UNW_X86_XMM0_hi:
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case UNW_X86_XMM1_lo:
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case UNW_X86_XMM1_hi:
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case UNW_X86_XMM2_lo:
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case UNW_X86_XMM2_hi:
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case UNW_X86_XMM3_lo:
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case UNW_X86_XMM3_hi:
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case UNW_X86_XMM4_lo:
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case UNW_X86_XMM4_hi:
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case UNW_X86_XMM5_lo:
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case UNW_X86_XMM5_hi:
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case UNW_X86_XMM6_lo:
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case UNW_X86_XMM6_hi:
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case UNW_X86_XMM7_lo:
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case UNW_X86_XMM7_hi:
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loc = x86_scratch_loc (c, reg);
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break;
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default:
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Debug (1, "bad register number %u\n", reg);
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return -UNW_EBADREG;
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}
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if (write)
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return dwarf_putfp (&c->dwarf, loc, *valp);
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else
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return dwarf_getfp (&c->dwarf, loc, valp);
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}
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