DWARF_SET_FRAME_CFA_VALUE(3)

okay so bestie, this is the Library Functions Manual page for DWARF_SET_FRAME_CFA_VALUE(3) — and it’s literally the whole dwarf_set_frame_* squad for the internal register rule table. no cap, it’s giving niche-but-iconic 💅✨

🌸 NAME 🌸

dwarf_set_frame_cfa_value, dwarf_set_frame_rule_initial_value, dwarf_set_frame_rule_table_size, dwarf_set_frame_same_value, dwarf_set_frame_undefined_value — set internal register rule table parameters. periodt.

🫶 LIBRARY 🫶

DWARF Access Library (libdwarf, -ldwarf) — bestie, that’s the whole library situation 💖

✨ SYNOPSIS ✨

#include <libdwarf.h>

Dwarf_Half
dwarf_set_frame_cfa_value(Dwarf_Debug dbg, Dwarf_Half value);

Dwarf_Half
dwarf_set_frame_rule_initial_value(Dwarf_Debug dbg, Dwarf_Half value);

Dwarf_Half
dwarf_set_frame_rule_table_size(Dwarf_Debug dbg, Dwarf_Half value);

Dwarf_Half
dwarf_set_frame_same_value(Dwarf_Debug dbg, Dwarf_Half value);

Dwarf_Half
dwarf_set_frame_undefined_value(Dwarf_Debug dbg, Dwarf_Half value);

🧚 DESCRIPTION 🧚

okay so these functions set the parameters of the internal register rule table. that’s the whole assignment, bestie.

Argument dbg should reference a DWARF debug context allocated using dwarf_init(3).

Argument value should hold the parameter value to set.

• dwarf_set_frame_cfa_value() — sets the column number for the CFA register rule in the internal register rule table. The constant DW_FRAME_CFA_COL is the default CFA register column number for DWARF2-only interfaces, and the constant DW_FRAME_CFA_COL3 is the default CFA column number for DWARF3-compatible interfaces. two defaults, two vibes, iykyk 🌈
• dwarf_set_frame_rule_initial_value() — sets the initial value of the register rules in the internal register rule table. The default initial value is the constant DW_FRAME_REG_INITIAL_VALUE, defined in the header file <libdwarf.h>. cute default alert 🎀
• dwarf_set_frame_rule_table_size() — sets the maxmium number of columns of the internal register rule table (yes, “maxmium” 😭 that’s the page’s spelling, not mine). Argument value should be at least as large as the number of real registers in the ABI. important, bestie 💀
• dwarf_set_frame_same_value() — sets the register number representing the “same value” register rule. The default register number for the “same value” rule is the constant DW_FRAME_SAME_VAL, defined in the header file <libdwarf.h>. slay 🫶
• dwarf_set_frame_undefined_value() — sets the register number representing the “undefined” register rule. The default register number for the “undefined” rule is the constant DW_FRAME_UNDEFINED_VAL, defined in the header file <libdwarf.h>. iconic 🌟

💖 RETURN VALUES 💖

These functions return the previous value of the parameter being set. so you get the old one back — setup, bestie.

👀 SEE ALSO 👀

• dwarf(3)
• dwarf_get_fde_at_pc(3)
• dwarf_get_fde_info_for_all_regs(3)
• dwarf_get_fde_info_for_all_regs3(3)
• dwarf_get_fde_info_for_cfa_reg3(3)
• dwarf_get_fde_info_for_reg(3)
• dwarf_get_fde_info_for_reg3(3)
• dwarf_get_fde_n(3)

mwah 💋 this page is from Debian, dated June 18, 2011, and the footer says DWARF_SET_FRAME_CFA_VALUE(3) — bye bestie, go set those internal register rule table parameters 🫶✨