diff options
Diffstat (limited to 'binutils/dwarf-mode.el')
| -rw-r--r-- | binutils/dwarf-mode.el | 74 |
1 files changed, 58 insertions, 16 deletions
diff --git a/binutils/dwarf-mode.el b/binutils/dwarf-mode.el index dc68348..625e30d 100644 --- a/binutils/dwarf-mode.el +++ b/binutils/dwarf-mode.el @@ -37,21 +37,63 @@ (defvar dwarf-file nil "Buffer-local variable holding the file name passed to objdump.") +(defvar dwarf--process nil + "Running objdump process, or nil.") + +(defvar dwarf--deletion-region nil + "Region to delete before inserting text in `dwarf--filter'.") + +(defun dwarf--check-running () + "Throw an exception if an objdump process is already running." + (when dwarf--process + (error "An objdump process is still running in this buffer"))) + +(defun dwarf--filter (proc string) + "Filter function for objdump processes." + (when (buffer-live-p (process-buffer proc)) + (with-current-buffer (process-buffer proc) + (save-excursion + (let ((inhibit-read-only t)) + (when dwarf--deletion-region + (apply #'delete-region dwarf--deletion-region) + (setq dwarf--deletion-region nil)) + (goto-char (process-mark proc)) + (insert string) + (set-marker (process-mark proc) (point)) + (set-buffer-modified-p nil)))))) + +(defun dwarf--sentinel (_proc _status) + (setq mode-line-process nil) + (setq dwarf--process nil)) + +(defun dwarf--invoke (start end &rest command) + "Invoke a command and arrange to insert output into the current buffer." + (setq mode-line-process "[Running]") + (setq dwarf--deletion-region (list start end)) + (setq dwarf--process (make-process :name "objdump" + :buffer (current-buffer) + :command command + :connection-type 'pipe + :noquery t + :filter #'dwarf--filter + :sentinel #'dwarf--sentinel)) + (set-marker (process-mark dwarf--process) (point))) + ;; Expand a "..." to show all the child DIES. NEW-DEPTH controls how ;; deep to display the new dies; `nil' means display all of them. (defun dwarf-do-insert-substructure (new-depth die) + (dwarf--check-running) (let ((inhibit-read-only t)) (beginning-of-line) - (delete-region (point) (progn - (end-of-line) - (forward-char) - (point))) - (save-excursion - (apply #'call-process dwarf-objdump-program nil (current-buffer) nil - "-Wi" (concat "--dwarf-start=0x" die) - (expand-file-name dwarf-file) - (if new-depth (list (concat "--dwarf-depth=" - (int-to-string new-depth)))))) + (apply #'dwarf--invoke + (point) (save-excursion + (end-of-line) + (forward-char) + (point)) + dwarf-objdump-program "-Wi" (concat "--dwarf-start=0x" die) + (expand-file-name dwarf-file) + (if new-depth (list (concat "--dwarf-depth=" + (int-to-string new-depth))))) (set-buffer-modified-p nil))) (defun dwarf-insert-substructure-button (die) @@ -132,13 +174,11 @@ A prefix argument means expand all children." ;; are the way they are because this is also called as a ;; revert-buffer-function. (defun dwarf-do-refresh (&rest ignore) + (dwarf--check-running) (let ((inhibit-read-only t)) - (erase-buffer) - (save-excursion - (call-process dwarf-objdump-program - nil (current-buffer) nil - "-Wi" "--dwarf-depth=1" - (expand-file-name dwarf-file))) + (dwarf--invoke (point-min) (point-max) + dwarf-objdump-program "-Wi" "--dwarf-depth=1" + (expand-file-name dwarf-file)) (set-buffer-modified-p nil))) (defvar dwarf-mode-map @@ -169,6 +209,8 @@ This is the main interface to `dwarf-mode'." (dwarf-mode) (setq default-directory (file-name-directory file)) (set (make-local-variable 'dwarf-file) file) + (set (make-local-variable 'dwarf--process) nil) + (set (make-local-variable 'dwarf--deletion-region) nil) (dwarf-do-refresh))) (provide 'dwarf-mode) |