dwarf_entry_len(9)

💅 dwarf_entry_len(9) — like, the Kernel API Manual page, bestie 🎀

okay so this is a page from the Kernel API Manual (that's dwarf_entry_len(9) if you're being formal) and it's genuinely short and sweet, so let's go ✨

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🌸 NAME 🌸

dwarf_entry_len — returns the length of an FDE or CIE. that's it. that's the whole job. iconic minimalism honestly 💅

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🦋 SYNOPSIS 🦋

int dwarf_entry_len (char *addr , unsigned long *len );

like look at that signature, it's giving "two arguments, no drama" 🫶

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✨ ARGUMENTS ✨

• addr — the address of the entry 💖 like, where the entry lives in memory, that's the vibe
• len — the length of the entry 🎀 a pointer to where the length gets stored

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🔥 DESCRIPTION 🔥

okay so here's what actually happens: it reads the initial_length field of the entry, and then it stores the size of the entry into len. slay 💅

and it returns the number of bytes read. that's the return value, no cap.

but bestie, heads up 👑 — on error it returns a count of 0. so like, check your return value, fr fr. zero means something went sideways 😭

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⭐ SEE ALSO ⭐

okay this is the part where the manpage just lists the whole friend group, and honestly? the way that it's all from Kernel file ./arch/sh/kernel/dwarf.c — we're all in the same file, iykyk 🌈

• dwarf_frame_alloc_reg(9)
• dwarf_frame_reg(9)
• dwarf_read_addr(9)
• dwarf_read_uleb128(9)
• dwarf_read_leb128(9)
• dwarf_read_encoded_value(9)
• dwarf_lookup_cie(9)
• dwarf_lookup_fde(9)
• dwarf_cfa_execute_insns(9)
• dwarf_free_frame(9)
• dwarf_unwind_stack(9)
• dwarf_parse_section(9)
• module_dwarf_cleanup(9)
• dwarf_unwinder_init(9)

like, go read those too, they're literally all serving 🫶

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and that's the whole page!! mwah 💖 this came out of ./arch/sh/kernel and the date on it is October 2026, so like, mark your calendars bestie 🗓️✨ bye!! 🦋🌸