* NEWS: Add MIPS/Linux DSP support.
* mips-linux-tdep.c: Document post-2.6.12 o32 sigcontext layout. (SIGCONTEXT_DSPCTL): New macro. (SIGCONTEXT_HI1, SIGCONTEXT_LO1): Likewise. (SIGCONTEXT_HI2, SIGCONTEXT_LO2): Likewise. (SIGCONTEXT_HI3, SIGCONTEXT_LO3): Likewise. (N64_SIGCONTEXT_HI1, N64_SIGCONTEXT_HI2): Likewise. (N64_SIGCONTEXT_HI3): Likewise. (N64_SIGCONTEXT_LO1, N64_SIGCONTEXT_LO2): Likewise. (N64_SIGCONTEXT_LO3): Likewise. (N64_SIGCONTEXT_DSPCTL): Likewise. (N64_SIGCONTEXT_FPCSR): Clarify definition. (mips_linux_o32_sigframe_init): Handle DSP registers. (mips_linux_n32n64_sigframe_init): Likewise.
This commit is contained in:
Maciej W. Rozycki
parent
45bb49c554
commit
d0e643928f
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@ -1,3 +1,20 @@
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2012-05-22 Maciej W. Rozycki <macro@codesourcery.com>
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* NEWS: Add MIPS/Linux DSP support.
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* mips-linux-tdep.c: Document post-2.6.12 o32 sigcontext layout.
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(SIGCONTEXT_DSPCTL): New macro.
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(SIGCONTEXT_HI1, SIGCONTEXT_LO1): Likewise.
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(SIGCONTEXT_HI2, SIGCONTEXT_LO2): Likewise.
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(SIGCONTEXT_HI3, SIGCONTEXT_LO3): Likewise.
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(N64_SIGCONTEXT_HI1, N64_SIGCONTEXT_HI2): Likewise.
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(N64_SIGCONTEXT_HI3): Likewise.
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(N64_SIGCONTEXT_LO1, N64_SIGCONTEXT_LO2): Likewise.
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(N64_SIGCONTEXT_LO3): Likewise.
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(N64_SIGCONTEXT_DSPCTL): Likewise.
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(N64_SIGCONTEXT_FPCSR): Clarify definition.
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(mips_linux_o32_sigframe_init): Handle DSP registers.
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(mips_linux_n32n64_sigframe_init): Likewise.
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2012-05-22 Pierre Muller <muller@ics.u-strasbg.fr>
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* common/buffer.c (buffer_grow): ARI fix: Remove unneeded
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2
gdb/NEWS
2
gdb/NEWS
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@ -3,6 +3,8 @@
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*** Changes since GDB 7.4
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* GDB now supports access to MIPS DSP registers on Linux targets.
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* GDB now supports debugging microMIPS binaries.
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* The "info os" command on GNU/Linux can now display information on
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@ -869,6 +869,8 @@ static const struct tramp_frame mips_linux_n64_rt_sigframe = {
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sigset_t sf_mask;
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};
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Pre-2.6.12 sigcontext:
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struct sigcontext {
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unsigned int sc_regmask; [Unused]
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unsigned int sc_status;
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@ -890,6 +892,30 @@ static const struct tramp_frame mips_linux_n64_rt_sigframe = {
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unsigned long sc_sigset[4]; [kernel's sigset_t]
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};
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Post-2.6.12 sigcontext (SmartMIPS/DSP support added):
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struct sigcontext {
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unsigned int sc_regmask; [Unused]
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unsigned int sc_status; [Unused]
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unsigned long long sc_pc;
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unsigned long long sc_regs[32];
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unsigned long long sc_fpregs[32];
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unsigned int sc_acx;
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unsigned int sc_fpc_csr;
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unsigned int sc_fpc_eir; [Unused]
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unsigned int sc_used_math;
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unsigned int sc_dsp;
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[Alignment hole of four bytes]
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unsigned long long sc_mdhi;
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unsigned long long sc_mdlo;
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unsigned long sc_hi1;
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unsigned long sc_lo1;
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unsigned long sc_hi2;
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unsigned long sc_lo2;
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unsigned long sc_hi3;
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unsigned long sc_lo3;
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};
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The RT signal frames look like this:
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struct rt_sigframe {
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@ -922,10 +948,17 @@ static const struct tramp_frame mips_linux_n64_rt_sigframe = {
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#define SIGCONTEXT_REGS (2 * 8)
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#define SIGCONTEXT_FPREGS (34 * 8)
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#define SIGCONTEXT_FPCSR (66 * 8 + 4)
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#define SIGCONTEXT_DSPCTL (68 * 8 + 0)
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#define SIGCONTEXT_HI (69 * 8)
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#define SIGCONTEXT_LO (70 * 8)
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#define SIGCONTEXT_CAUSE (71 * 8 + 0)
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#define SIGCONTEXT_BADVADDR (71 * 8 + 4)
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#define SIGCONTEXT_HI1 (71 * 8 + 0)
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#define SIGCONTEXT_LO1 (71 * 8 + 4)
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#define SIGCONTEXT_HI2 (72 * 8 + 0)
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#define SIGCONTEXT_LO2 (72 * 8 + 4)
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#define SIGCONTEXT_HI3 (73 * 8 + 0)
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#define SIGCONTEXT_LO3 (73 * 8 + 4)
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#define SIGCONTEXT_REG_SIZE 8
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@ -1000,18 +1033,49 @@ mips_linux_o32_sigframe_init (const struct tramp_frame *self,
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regs->fp_control_status
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+ gdbarch_num_regs (gdbarch),
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sigcontext_base + SIGCONTEXT_FPCSR);
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if (regs->dspctl != -1)
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trad_frame_set_reg_addr (this_cache,
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regs->dspctl + gdbarch_num_regs (gdbarch),
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sigcontext_base + SIGCONTEXT_DSPCTL);
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trad_frame_set_reg_addr (this_cache,
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regs->hi + gdbarch_num_regs (gdbarch),
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regs_base + SIGCONTEXT_HI);
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trad_frame_set_reg_addr (this_cache,
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regs->lo + gdbarch_num_regs (gdbarch),
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regs_base + SIGCONTEXT_LO);
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trad_frame_set_reg_addr (this_cache,
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regs->cause + gdbarch_num_regs (gdbarch),
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sigcontext_base + SIGCONTEXT_CAUSE);
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trad_frame_set_reg_addr (this_cache,
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regs->badvaddr + gdbarch_num_regs (gdbarch),
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sigcontext_base + SIGCONTEXT_BADVADDR);
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if (regs->dspacc != -1)
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{
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trad_frame_set_reg_addr (this_cache,
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regs->dspacc + 0 + gdbarch_num_regs (gdbarch),
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sigcontext_base + SIGCONTEXT_HI1);
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trad_frame_set_reg_addr (this_cache,
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regs->dspacc + 1 + gdbarch_num_regs (gdbarch),
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sigcontext_base + SIGCONTEXT_LO1);
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trad_frame_set_reg_addr (this_cache,
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regs->dspacc + 2 + gdbarch_num_regs (gdbarch),
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sigcontext_base + SIGCONTEXT_HI2);
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trad_frame_set_reg_addr (this_cache,
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regs->dspacc + 3 + gdbarch_num_regs (gdbarch),
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sigcontext_base + SIGCONTEXT_LO2);
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trad_frame_set_reg_addr (this_cache,
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regs->dspacc + 4 + gdbarch_num_regs (gdbarch),
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sigcontext_base + SIGCONTEXT_HI3);
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trad_frame_set_reg_addr (this_cache,
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regs->dspacc + 5 + gdbarch_num_regs (gdbarch),
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sigcontext_base + SIGCONTEXT_LO3);
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}
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else
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{
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trad_frame_set_reg_addr (this_cache,
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regs->cause + gdbarch_num_regs (gdbarch),
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sigcontext_base + SIGCONTEXT_CAUSE);
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trad_frame_set_reg_addr (this_cache,
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regs->badvaddr + gdbarch_num_regs (gdbarch),
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sigcontext_base + SIGCONTEXT_BADVADDR);
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}
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/* Choice of the bottom of the sigframe is somewhat arbitrary. */
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trad_frame_set_id (this_cache, frame_id_build (frame_sp, func));
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@ -1089,9 +1153,16 @@ mips_linux_o32_sigframe_init (const struct tramp_frame *self,
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#define N64_SIGCONTEXT_REGS (0 * 8)
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#define N64_SIGCONTEXT_FPREGS (32 * 8)
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#define N64_SIGCONTEXT_HI (64 * 8)
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#define N64_SIGCONTEXT_HI1 (65 * 8)
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#define N64_SIGCONTEXT_HI2 (66 * 8)
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#define N64_SIGCONTEXT_HI3 (67 * 8)
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#define N64_SIGCONTEXT_LO (68 * 8)
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#define N64_SIGCONTEXT_LO1 (69 * 8)
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#define N64_SIGCONTEXT_LO2 (70 * 8)
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#define N64_SIGCONTEXT_LO3 (71 * 8)
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#define N64_SIGCONTEXT_PC (72 * 8)
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#define N64_SIGCONTEXT_FPCSR (73 * 8)
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#define N64_SIGCONTEXT_FPCSR (73 * 8 + 0)
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#define N64_SIGCONTEXT_DSPCTL (74 * 8 + 0)
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#define N64_SIGCONTEXT_REG_SIZE 8
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@ -1140,6 +1211,7 @@ mips_linux_n32n64_sigframe_init (const struct tramp_frame *self,
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regs->fp_control_status
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+ gdbarch_num_regs (gdbarch),
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sigcontext_base + N64_SIGCONTEXT_FPCSR);
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trad_frame_set_reg_addr (this_cache,
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regs->hi + gdbarch_num_regs (gdbarch),
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sigcontext_base + N64_SIGCONTEXT_HI);
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@ -1147,6 +1219,32 @@ mips_linux_n32n64_sigframe_init (const struct tramp_frame *self,
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regs->lo + gdbarch_num_regs (gdbarch),
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sigcontext_base + N64_SIGCONTEXT_LO);
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if (regs->dspacc != -1)
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{
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trad_frame_set_reg_addr (this_cache,
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regs->dspacc + 0 + gdbarch_num_regs (gdbarch),
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sigcontext_base + N64_SIGCONTEXT_HI1);
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trad_frame_set_reg_addr (this_cache,
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regs->dspacc + 1 + gdbarch_num_regs (gdbarch),
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sigcontext_base + N64_SIGCONTEXT_LO1);
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trad_frame_set_reg_addr (this_cache,
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regs->dspacc + 2 + gdbarch_num_regs (gdbarch),
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sigcontext_base + N64_SIGCONTEXT_HI2);
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trad_frame_set_reg_addr (this_cache,
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regs->dspacc + 3 + gdbarch_num_regs (gdbarch),
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sigcontext_base + N64_SIGCONTEXT_LO2);
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trad_frame_set_reg_addr (this_cache,
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regs->dspacc + 4 + gdbarch_num_regs (gdbarch),
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sigcontext_base + N64_SIGCONTEXT_HI3);
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trad_frame_set_reg_addr (this_cache,
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regs->dspacc + 5 + gdbarch_num_regs (gdbarch),
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sigcontext_base + N64_SIGCONTEXT_LO3);
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}
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if (regs->dspctl != -1)
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trad_frame_set_reg_addr (this_cache,
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regs->dspctl + gdbarch_num_regs (gdbarch),
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sigcontext_base + N64_SIGCONTEXT_DSPCTL);
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/* Choice of the bottom of the sigframe is somewhat arbitrary. */
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trad_frame_set_id (this_cache, frame_id_build (frame_sp, func));
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}
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