aboutsummaryrefslogtreecommitdiff
path: root/gdb/amd64-linux-tdep.c
diff options
context:
space:
mode:
authorSimon Marchi <simon.marchi@efficios.com>2020-12-04 16:43:56 -0500
committerSimon Marchi <simon.marchi@efficios.com>2020-12-04 16:43:56 -0500
commit480af54cf68b5bb079f070b587f95620d114e87c (patch)
tree23d825a69feb63ad3a4b4f385bdd62d35c35b67e /gdb/amd64-linux-tdep.c
parentd965505887c27e8b1d6e84cb06c2b131aad08093 (diff)
downloadgdb-480af54cf68b5bb079f070b587f95620d114e87c.zip
gdb-480af54cf68b5bb079f070b587f95620d114e87c.tar.gz
gdb-480af54cf68b5bb079f070b587f95620d114e87c.tar.bz2
gdb: make displaced stepping implementation capable of managing multiple buffers
The displaced_step_buffer class, introduced in the previous patch, manages access to a single displaced step buffer. Change it into displaced_step_buffers (note the plural), which manages access to multiple displaced step buffers. When preparing a displaced step for a thread, it looks for an unused buffer. For now, all users still pass a single displaced step buffer, so no real behavior change is expected here. The following patch makes a user pass more than one buffer, so the functionality introduced by this patch is going to be useful in the next one. gdb/ChangeLog: * displaced-stepping.h (struct displaced_step_buffer): Rename to... (struct displaced_step_buffers): ... this. <m_addr, m_current_thread, m_copy_insn_closure>: Remove. <struct displaced_step_buffer>: New inner class. <m_buffers>: New. * displaced-stepping.c (displaced_step_buffer::prepare): Rename to... (displaced_step_buffers::prepare): ... this, adjust for multiple buffers. (displaced_step_buffer::finish): Rename to... (displaced_step_buffers::finish): ... this, adjust for multiple buffers. (displaced_step_buffer::copy_insn_closure_by_addr): Rename to... (displaced_step_buffers::copy_insn_closure_by_addr): ... this, adjust for multiple buffers. (displaced_step_buffer::restore_in_ptid): Rename to... (displaced_step_buffers::restore_in_ptid): ... this, adjust for multiple buffers. * linux-tdep.h (linux_init_abi): Change supports_displaced_step for num_disp_step_buffers. * linux-tdep.c (struct linux_gdbarch_data) <num_disp_step_buffers>: New field. (struct linux_info) <disp_step_buf>: Rename to... <disp_step_bufs>: ... this, change type to displaced_step_buffers. (linux_displaced_step_prepare): Use linux_gdbarch_data::num_disp_step_buffers to create that number of buffers. (linux_displaced_step_finish): Adjust. (linux_displaced_step_copy_insn_closure_by_addr): Adjust. (linux_displaced_step_restore_all_in_ptid): Adjust. (linux_init_abi): Change supports_displaced_step parameter for num_disp_step_buffers, save it in linux_gdbarch_data. * aarch64-linux-tdep.c (aarch64_linux_init_abi): Adjust. * alpha-linux-tdep.c (alpha_linux_init_abi): Adjust. * amd64-linux-tdep.c (amd64_linux_init_abi_common): Change supports_displaced_step parameter for num_disp_step_buffers. (amd64_linux_init_abi): Adjust. (amd64_x32_linux_init_abi): Adjust. * arc-linux-tdep.c (arc_linux_init_osabi): Adjust. * arm-linux-tdep.c (arm_linux_init_abi): Adjust. * bfin-linux-tdep.c (bfin_linux_init_abi): Adjust. * cris-linux-tdep.c (cris_linux_init_abi): Adjust. * csky-linux-tdep.c (csky_linux_init_abi): Adjust. * frv-linux-tdep.c (frv_linux_init_abi): Adjust. * hppa-linux-tdep.c (hppa_linux_init_abi): Adjust. * i386-linux-tdep.c (i386_linux_init_abi): Adjust. * ia64-linux-tdep.c (ia64_linux_init_abi): Adjust. * m32r-linux-tdep.c (m32r_linux_init_abi): Adjust. * m68k-linux-tdep.c (m68k_linux_init_abi): * microblaze-linux-tdep.c (microblaze_linux_init_abi): * mips-linux-tdep.c (mips_linux_init_abi): Adjust. * mn10300-linux-tdep.c (am33_linux_init_osabi): Adjust. * nios2-linux-tdep.c (nios2_linux_init_abi): Adjust. * or1k-linux-tdep.c (or1k_linux_init_abi): Adjust. * ppc-linux-tdep.c (ppc_linux_init_abi): Adjust. * riscv-linux-tdep.c (riscv_linux_init_abi): Adjust. * rs6000-tdep.c (struct ppc_inferior_data) <disp_step_buf>: Change type to displaced_step_buffers. * s390-linux-tdep.c (s390_linux_init_abi_any): Adjust. * sh-linux-tdep.c (sh_linux_init_abi): Adjust. * sparc-linux-tdep.c (sparc32_linux_init_abi): Adjust. * sparc64-linux-tdep.c (sparc64_linux_init_abi): Adjust. * tic6x-linux-tdep.c (tic6x_uclinux_init_abi): Adjust. * tilegx-linux-tdep.c (tilegx_linux_init_abi): Adjust. * xtensa-linux-tdep.c (xtensa_linux_init_abi): Adjust. Change-Id: Ia9c02f207da2c9e1d9188020139619122392bb70
Diffstat (limited to 'gdb/amd64-linux-tdep.c')
-rw-r--r--gdb/amd64-linux-tdep.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/gdb/amd64-linux-tdep.c b/gdb/amd64-linux-tdep.c
index a81bb90..60707ed 100644
--- a/gdb/amd64-linux-tdep.c
+++ b/gdb/amd64-linux-tdep.c
@@ -1796,11 +1796,11 @@ amd64_dtrace_parse_probe_argument (struct gdbarch *gdbarch,
static void
amd64_linux_init_abi_common(struct gdbarch_info info, struct gdbarch *gdbarch,
- bool supports_displaced_step)
+ int num_disp_step_buffers)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- linux_init_abi (info, gdbarch, supports_displaced_step);
+ linux_init_abi (info, gdbarch, num_disp_step_buffers);
tdep->sigtramp_p = amd64_linux_sigtramp_p;
tdep->sigcontext_addr = amd64_linux_sigcontext_addr;
@@ -1880,7 +1880,7 @@ amd64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
if (!valid_p)
return;
- amd64_linux_init_abi_common (info, gdbarch, true);
+ amd64_linux_init_abi_common (info, gdbarch, 1);
/* Initialize the amd64_linux_record_tdep. */
/* These values are the size of the type that will be used in a system
@@ -2095,7 +2095,7 @@ amd64_x32_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
if (!valid_p)
return;
- amd64_linux_init_abi_common (info, gdbarch, false);
+ amd64_linux_init_abi_common (info, gdbarch, 0);
/* Initialize the amd64_x32_linux_record_tdep. */
/* These values are the size of the type that will be used in a system